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Patent US6086327 - Bushing for a jet engine vane - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA vane assembly for an engine is disclosed, the vane assembly having a vane including a blade having a spindle disposed at one end thereof and a bushing mounted on the spindle. The bushing includes first and second half portions, each half portion having a generally semicircular body having a first finger...http://www.google.com/patents/US6086327?utm_source=gb-gplus-sharePatent US6086327 - Bushing for a jet engine vaneAdvanced Patent SearchPublication numberUS6086327 APublication typeGrantApplication numberUS 09/233,902Publication dateJul 11, 2000Filing dateJan 20, 1999Priority dateJan 20, 1999Fee statusLapsedAlso published asCA2360775A1, CA2360775C, CA2652851A1, DE60029424D1, DE60029424T2, EP1153204A1, EP1153204B1, US6386763, WO2000043642A1Publication number09233902, 233902, US 6086327 A, US 6086327A, US-A-6086327, US6086327 A, US6086327AInventorsJames P. Mack, Edward J. MackOriginal AssigneeMack Plastics CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (10), Non-Patent Citations (10), Referenced by (52), Classifications (11), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetBushing for a jet engine vane
US 6086327 AAbstract
A vane assembly for an engine is disclosed, the vane assembly having a vane including a blade having a spindle disposed at one end thereof and a bushing mounted on the spindle. The bushing includes first and second half portions, each half portion having a generally semicircular body having a first finger disposed at a first end of a first side of the body, a second finger disposed at a second end of the first side of the body and a third finger disposed on a second side of the body, between the first and second ends of the body, the first and second fingers having a distance between them which is not less than a width of the third finger. The first and second half portions are snap fit onto the spindle of the vane such that the third finger of the second half portion is located between the first and second fingers of the first half portion, and the third finger of the first half portion is located between the first and second fingers of the second half portion. Each of the first and second half portions further include a semi-annular flange disposed at the first end of the body portion, the semi-annular flange lying in a plane which is substantially perpendicular to a longitudinal axis of the body.
1. A vane assembly for an engine, the vane assembly comprising:a vane comprising a blade having a spindle disposed at one end thereof; and a bushing mounted on said spindle, said bushing comprising first and second half portions, each half portion having a generally semicircular body having a first finger disposed at a first end of a first side of said body, a second finger disposed at a second end of said first side of said body and a third finger disposed on a second side of said body, between said first and second ends of said body, said first and second fingers having a distance between them which is not less than a width of said third finger; wherein said first and second half portions are snap fit onto said spindle of said vane such that said third finger of said second half portion is located between said first and second fingers of said first half portion, and said third finger of said first half portion is located between said first and second fingers of said second half portion. 2. The vane assembly of claim 1, wherein each of said first and second half portions further comprise a semi-annular flange disposed at said first end of said body portion, said semi-annular flange lying in a plane which is substantially perpendicular to a longitudinal axis of said body.
3. The vane assembly of claim 2, wherein said bushing is formed from a plastic material.
4. The vane assembly of claim 1, wherein said bushing is formed from a plastic material.
5. The vane assembly of claim 4, wherein said bushing is formed using an injection molding process.
6. A vane assembly for an engine, the vane assembly comprising:a vane comprising a blade having a spindle disposed at one end thereof; and a cylindrical bushing having first and second portions hingedly attached to each other, said first portion having a first finger disposed at a first end of said bushing and a second finger disposed at a second end of said bushing, said second portion having a finger disposed at a point between said first and second ends of said bushing; wherein said bushing is secured on said spindle by placing one of said first and second portions on said spindle and closing said bushing around said spindle such that said finger of said second portion is located between said first and second fingers of said first portion. 7. The vane assembly of claim 6, wherein each of said first and second portions further comprise a semi-annular flange disposed at said first end thereof, said semi-annular flange lying in a plane which is substantially perpendicular to a longitudinal axis of said body.
8. The vane assembly of claim 7, wherein said bushing is formed from a plastic material.
9. The vane assembly of claim 8, wherein said bushing is formed using an injection molding process.
10. The vane assembly of claim 6, wherein said bushing is formed from a plastic material.
11. A vane assembly for an engine, the vane assembly comprising:a vane comprising a blade having a spindle disposed at one end thereof; and a bushing having a cylindrical body, said body having a slit which extends from an upper edge of said body to a lower edge of said body and a number of slots which extend from said upper edge of said body to a point between said upper and lower edges of said body, said slit and said number of slots being constructed and arranged to permit the bushing to be temporarily pried open; wherein said bushing is mounted on said spindle by prying the bushing open at said slit, placing the bushing around the spindle and releasing the bushing, thereby allowing the bushing to encircle the spindle. 12. The vane assembly of claim 11, wherein said bushing is formed from a plastic material.
13. The vane assembly of claim 12, wherein said plastic material is a mixture of PEEK™ and PTFE.
14. The vane assembly of claim 13, wherein said bushing is formed using an injection molding process.
15. A bushing for a spindle, the bushing comprising:first and second half portions, each half portion having a generally semicircular body having a first finger disposed at a first end of a first side of said body, a second finger disposed at a second end of said first side of said body and a third finger disposed on a second side of said body, between said first and second ends of said body, said first and second fingers having a distance between them which is substantially a width of said third finger; wherein said first and second half portions are snap fit onto said spindle such that said third finger of said second half portion is located between said first and second fingers of said first half portion, and said third finger of said first half portion is located between said first and second fingers of said second half portion. 16. A bushing for mounting a variable-pitch stator vane within a shroud of a jet engine having a number of the variable-pitch stator vanes, each variable-pitch stator vane including a blade having a spindle disposed at one end thereof, the bushing comprising:first and second half portions, each half portion having a substantially semicircular body, an upper end, a lower end, a first side and a second side; the first side of the body of each of the first and second half portions having an intermediate finger disposed intermediate said upper and lower ends of the body, said intermediate finger having a width; the second side of the body of each of the first and second half portions having an upper finger disposed at said upper end of said body and a lower finger disposed at said lower end of said body, said upper and lower fingers having a distance therebetween which is no less than the width of said intermediate finger; wherein said first and second half portions are constructed and arranged to be snap fit onto the spindle of the vane such that said intermediate finger of said first half portion is positioned between said upper and lower fingers of said second half portion and said intermediate finger of said second half portion is positioned between said upper and lower fingers of said first half portion. 17. The bushing of claim 16, wherein each of said first and second half portions further comprise a flange disposed at said upper end of said body, said flange lying in a plane which is substantially perpendicular to a longitudinal axis of said body.
18. The bushing of claim 17, wherein said first and second half portions are formed from a plastic material.
19. The bushing of claim 16, wherein said first and second half portions are formed from a plastic material.
20. The bushing of claim 19, wherein said plastic material comprises a mixture of PEEK™ and PTFE.
21. The bushing of claim 20, wherein said mixture comprises approximately 80% PEEK™ and approximately 20% PTFE.
22. The bushing of claim 19, wherein said first and second half portions are formed by injection molding.
23. The bushing of claim 16, wherein, when said bushing is snap fit on the spindle, each of said first and second half portions spans the spindle approximately 270�.
24. A bushing comprising:first and second half portions, each half portion having a substantially semicircular body, an upper end, a lower end, a first side and a second side; the first side of the body of each of the first and second half portions having an intermediate finger disposed intermediate said upper and lower ends of the body, said intermediate finger having a width; the second side of the body of each of the first and second half portions having an upper finger disposed at said upper end of said body and a lower finger disposed at said lower end of said body, said upper and lower fingers having a distance therebetween which is no less than the width of said intermediate finger; wherein said first and second half portions are constructed and arranged to be snap fit onto a spindle such that said intermediate finger of said first half portion is positioned between said upper and lower fingers of said second half portion and said intermediate finger of said second half portion is positioned between said upper and lower fingers of said first half portion. 25. The bushing of claim 24, wherein each of said first and second half portions further comprise a flange disposed at said upper end of said body, said flange lying in a plane which is substantially perpendicular to a longitudinal axis of said body.
26. The bushing of claim 25, wherein said first and second half portions are formed from a plastic material.
27. The bushing of claim 24, wherein said first and second half portions are formed from a plastic material.
28. The bushing of claim 27, wherein said plastic material comprises a mixture of PEEK™ and PTFE.
29. The bushing of claim 28, wherein said mixture comprises approximately 80% PEEK™ and approximately 20% PTFE.
30. The bushing of claim 27, wherein said first and second half portions are formed by injection molding.
31. The bushing of claim 24, wherein, when said bushing is snap fit on the spindle, each of said first and second half portions spans the spindle approximately 270�.
The present invention relates generally to a bushing for a jet engine and more specifically to an improved bushing which is less expensive to manufacture and which facilitates shipping and installation of the bushing.
Jet engines generally include an axial air compressor which supplies compressed air into a combustor. The front section of a jet engine includes the axial air compressor. The axial air compressor generally includes several consecutive stages, each having a number of stator (stationary) vanes in a shroud and an equal number of rotor (rotating) vanes. Rotor vanes are designed and arranged such that, as the rotor vanes pass by the stator vanes in a particular stage, they take in a volume of air, compress the air and pass this compressed air into the next stage for further compression of the air. Some jet engines, such as the CFM56-2 turbofan engine manufactured by General Electric for example, have thirteen stages of compression. Stages 1 through 5 of this engine have stator vanes in which the pitch of the vanes is variable. The pitch of the variable stator vanes can be adjusted to vary the volume of air intake and thereby control the volume and pressure of the air that is subsequently injected into the combustor to be combined with fuel and ignited. The thrust of the engines can thereby be varied and the amount of air can be metered accurately for maximum fuel consumption. This is desirable because it provides the pilot with greater control over the amount of thrust produced within the engine at given engine speeds. For example, when the pilot is bringing the jet in for a landing, he or she can keep the engine running at very high RPMs and vary the pitch of the vanes to generate less thrust within the engine. If there is a problem and the pilot has to quickly generate thrust to pull up, he or she simply rotates the vanes of the stator to a pitch which increases the amount of air directed into the stator, thus increasing the thrust produced by the engine. The adjustable vanes allow the pilot to quickly produce thrust without having to adjust the RPMs at which the rotor is rotating.
As shown in FIG. 7, each vane 10 of the engine described above includes a blade 12 which is rotatably mounted between an inner shroud 14 and an outer shroud 15. It will be understood that each stator of a jet engine may include several stages, each having many adjustable vanes. However, for simplicity, only one vane is shown in FIG. 7. Vane 10 includes a spindle, partially shown at 16 in FIG. 7 and fully shown at 16 in FIG. 1, which is held in place between portions 20a and 20b of inner shroud 14 within aperture 18. Vane 10 also includes a drive portion 22 mounted within outer shroud 15. A steering mechanism (not shown) is coupled to the drive portion 22 to rotate the vane 10 within the inner shroud 14 and the outer shroud 15.
In order to facilitate the rotation of the vane 10, a bushing is mounted on spindle 16 before it is mounted between portions 20a and 20b of inner shroud 14. A prior art bushing 24 is shown in FIGS. 1 and 2. Since the operating temperature of the jet engine can reach 550� F., bushing 24 must be made from a material that can withstand the extremely high temperatures to which it will be subjected. Therefore, bushing 24 is typically formed from a plastic which is capable of withstanding these temperatures. One prior art bushing 24 is formed from a plastic material sold by DuPont under the trademark VESPEL. However, this material is not capable of being melt processed, meaning that it cannot be used in an injection molding process to form the bushing 24. Bushing 24 is typically formed from a billet of the VESPEL material and is machined to the shape shown in FIG. 1, including a circumferential groove 28 (FIG. 2). The bushing 24 is then cut in half to form parts 26a and 26b. An elastic band 30, made from a high temperature-resistant material, is placed within groove 28 to hold parts 26a and 26b together on spindle 16 until the spindle is mounted to inner shroud 14, as described above.
Due to the properties of the material used in the manufacture of bushing 24, the requirement that each bushing be separately machined and the requirement for the elastic band 30, bushing 24 is very time consuming and expensive to manufacture. Shipping the bushings from the manufacturer to the end user is problematic because the three-piece bushings are prone to disassembling during shipping, thus requiring extra time for reassembling the bushing before it is installed on the vane 10. Furthermore, since each part 26a and 26b must be held in place on spindle 16 while the elastic band 30 is installed, the installation of bushing 24 on the vane 10 is very time consuming. Since, every time a jet engine is rebuilt, every vane bushing is replaced, the replacement of the bushings adds considerably to the expense and time required to rebuild an engine.
What is needed is a vane bushing for a jet engine which is simple and inexpensive to manufacture, and which is easy to ship and install on a jet engine vane.
The present invention is directed to a bushing for a jet engine vane which is injection moldable and therefore is simple and inexpensive to manufacture, and is formed into such a design which enables the bushing to be easily shipped and installed on a jet engine vane.
According to one embodiment of the invention, a vane assembly for an engine is disclosed, the vane assembly comprising a vane comprising a blade having a spindle disposed at one end thereof and a bushing mounted on the spindle. The bushing comprises first and second half portions, each half portion having a generally semicircular body having a first finger disposed at a first end of a first side of the body, a second finger disposed at a second end of the first side of the body and a third finger disposed on a second side of the body, between the first and second ends of the body. The first and second fingers have a distance between them which is not less than a width of the third finger.
The first and second half portions are snap fit onto the spindle of the vane such that the third finger of the second half portion is located between the first and second fingers of the first half portion, and the third finger of the first half portion is located between the first and second fingers of the second half portion.
Each of the first and second half portions further comprise a semi-annular flange disposed at the first end of the body portion, the semi-annular flange lying in a plane which is substantially perpendicular to a longitudinal axis of the body.
According to another embodiment of the invention, a vane assembly for an engine is disclosed, the vane assembly comprising a vane comprising a blade having a spindle disposed at one end thereof and a cylindrical bushing having first and second portions hingedly attached to each other. The first portion has a first finger disposed at a first end of the bushing and a second finger disposed at a second end of the bushing, the second portion having a finger disposed at a point between the first and second ends of the bushing.
The bushing is secured on the spindle by placing one of the first and second portions on the spindle and closing the bushing around the spindle such that the finger of the second portion is located between the first and second fingers of the first portion.
According to yet another embodiment of the invention, a vane assembly for an engine is disclosed, the vane assembly including a blade having a spindle disposed at one end thereof and a bushing having a cylindrical body. The body has a slot which extends from an upper edge of the body to a lower edge of the body and a number of slits which extend from the upper edge of the body to a point between the upper and lower edges of the body, the slot and the number of slits being constructed and arranged to permit the bushing to be temporarily pried open.
The bushing is mounted on the spindle by prying the bushing open at the slot, placing the bushing around the spindle and releasing the bushing, thereby allowing the bushing to encircle the spindle.
According to yet another embodiment, a bushing is disclosed, the bushing including first and second half portions, each half portion having a substantially semicircular body, an upper end, a lower end, a first side and a second side. The first side of the body of each of the first and second half portions have an intermediate finger disposed intermediate the upper and lower ends of the body and the second side of the body of each of the first and second half portions has an upper finger disposed at the upper end of the body and a lower finger disposed at the lower end of the body. The upper and lower fingers having a distance therebetween which is no less than the width of the intermediate finger.
The first and second half portions are constructed and arranged to be snap fit onto a spindle such that the intermediate finger of the first half portion is positioned between the upper and lower fingers of the second half portion and the intermediate finger of the second half portion is positioned between the upper and lower fingers of the first half portion.
FIG. 1 is a perspective view of a prior art vane bushing, shown removed from a vane;
FIG. 2 is an exploded view of the prior art vane bushing shown in FIG. 1;
FIG. 3 is a perspective view of a vane bushing according to a first embodiment of the present invention, shown removed from a vane;
FIG. 4 is an exploded view of the vane bushing according to the first embodiment of the invention;
FIG. 5 is a perspective view of the vane bushing according to the first embodiment of the invention, shown partially installed on a vane;
FIG. 6 is a perspective view of the vane bushing according to the first embodiment of the invention, shown fully installed on a vane;
FIG. 7 is a perspective view of a vane mounted within a shroud of a jet engine;
FIG. 8 is a cross-sectional view of the bushing of the first embodiment of the present invention mounted on a vane, taken along line 8--8 in FIG. 7;
FIG. 8A is a close-up view of the bushing of the first embodiment of the present invention mounted on a vane, as shown in FIG. 8;
FIG. 9 is a perspective view of a vane bushing according to a second embodiment of the present invention, shown removed from a vane;
FIG. 10 is a perspective view of a vane bushing according to a second embodiment of the present invention, shown in a closed position;
FIG. 11 is a perspective view of a vane bushing according to the second embodiment of the present invention, shown in an open position;
FIG. 12 is a perspective view of a vane bushing according to a third embodiment of the present invention, shown removed from a vane; and
FIG. 13 is a perspective view of a vane bushing according to the third embodiment of the present invention.
Referring now to the drawings, and more particularly to FIGS. 3-13, the vane bushing of the present invention will be described. Shown in FIGS. 3-6 is a first embodiment of a vane bushing 40 of the present invention. Bushing 40 includes two identical parts 42 which are mated together on spindle 16 to form the bushing 40. Each part 42 is injection molded in one piece from a material which, while being capable of being melted and injection molded, is also capable of withstanding the very high temperatures experienced in a jet engine once the part is formed. The material must also be machinable, since, in some cases, in order to finish the part, each part may be machined to bring it within specific tolerances. The material presently contemplated as the preferred material for this application is a combination of approximately 80% of a material sold under the trademark PEEK by Victrex USA, Inc. of West Chester, Pa., and approximately 20% polytetrafloroethylene (PTFE). This combination of materials allows complex shapes to be formed fairly easily and inexpensively, compared to the prior art process of machining a billet into the desired shape. However, any material which possesses the characteristics described above may be used to form the present invention.
As shown in FIG. 4, each part 42 includes a body portion 44 and a flange portion 46. Each body portion 44 includes an upper finger 48 formed at the upper end 60 of one side of body portion 44 proximate flange portion 46 and a lower finger 50 formed at the lower end 62 of the same side of body portion 44 on which upper finger 48 is formed. On the other side of body portion 44, an intermediate finger 52 is formed at a point between the upper end 60 and lower end 62 of body portion 44. Upper finger 48 and lower finger 50 have a distance between them which is substantially the same as the width of intermediate finger 52 as defined by the distance between upper edge 54 and lower edge 56 of intermediate finger 52. However, the distance between upper finger 48 and lower finger 50 may be greater than the width of intermediate finger 52 to allow for expansion of the parts when the bushing 40 is installed on a spindle and for the accumulation of debris from the normal wear associated with the bushing 40. Upper finger 48 has a width, defined by the distance between upper end 60 of body portion 44 and lower edge 66 of upper finger 48, which is substantially the same as the distance between the upper edge 54 of intermediate finger 52 and the upper end 60 of body portion 44. Lower finger 50 has a width, defined by the distance between lower end 62 of body portion 44 and upper edge 68 of lower finger 50, which is substantially the same as the distance between the lower edge 56 of intermediate finger 52 and the lower end 62 of body portion 44. These dimensions of the fingers 48, 50 and 52 allow each part 42 of the bushing 40 to interlock with the other part 42 of the bushing 40 when it is installed on the spindle 16 of the vane 10.
In FIG. 5, one part 42 of bushing 40 is shown mounted on a spindle 16 of a vane 10. As shown in FIG. 5, the distance between upper and lower fingers 48 and 50 and intermediate finger 52 is less than the diameter of spindle 16. Therefore, in order to install part 42 onto spindle 16, part 42 is lined up with spindle 16 such that fingers 48, 50 and 52 are in contact with spindle 16, and part 42 is pressed onto spindle 16, causing upper and lower fingers 48 and 50 to be flexed away from intermediate finger 52 in order to allow spindle 16 to pass between upper and lower fingers 48 and 50 and intermediate finger 52. Once upper and lower fingers 48 and 50 and intermediate finger 52 pass beyond the widest part of spindle 16, upper and lower fingers 48 and 50 and intermediate finger 52 snap back into their normal positions, thereby engaging spindle 16 within part 42. Once mounted on spindle 16, upper and lower fingers 48 and 50 and intermediate finger 52 span spindle 16 approximately 270�. However, a span of approximately 250� to 280� may be used. The same process is carried out to install the other part 42 on spindle 16.
As shown in FIG. 6, due to the configuration and size of upper and lower fingers 48 and 50 and intermediate finger 52, when both parts 42 are installed on the spindle 16, intermediate finger 52 of each part 42 fits into the gap between the upper and lower fingers 48 and 50 of the other part 42. The resulting bushing 40 completely covers the spindle 16.
FIGS. 8 and 8A show cross-sectional views, taken along line 8--8 of FIG. 7, of the bushing 40 installed on a spindle 16 of a vane 10 which is mounted to inner shroud 14. Once bushing 42 is installed on spindle 16, bushing 40 and spindle 16 are sandwiched between portion 20a and 20b of inner shroud 14. Portions 20a and 20b are secured together via nut and bolt assemblies 70. This assembly holds vane 10 in place, while allowing it to be rotated about spindle 16.
Since both parts 42 of this embodiment are identical, there is no need for preassembling the bushings before they are shipped, and therefore, the prior art problem of having to reassemble bushings that become disassembled during shipping has been eliminated. Furthermore, since each part 42 of bushing 40 can be separately attached to the spindle 16, the need for the elastic band to hold the prior art bushing in place on the spindle 16 has also been eliminated.
A second embodiment of the bushing of the present invention is shown at 80 in FIGS. 9-11. Bushing 80 may be injection molded in one piece using the same material as that used in the embodiment of FIGS. 3-6. Bushing 80 includes a first part 82a and a second part 82b which are attached to each other along a hinge 84. Preferably, hinge 84 is molded as a living hinge, which permits bushing 80 to be formed in one piece, while also providing the hinge function. As shown in FIGS. 9-11, part 82a of bushing 80 includes a body portion 86 having an upper finger 88, a lower finger 90 and a flange portion 100a, disposed along an upper end 102a of body 86 of part 82a. Part 82b of bushing 80 includes a body portion 92 having an intermediate finger 94 and a flange portion 100b, disposed along an upper end 102a of body 92 of part 82b.
Bushing 80 is formed such that the distance between hinge 84 and the ends of upper and lower fingers 88 and 90, as well as the distance between hinge 84 and the end of intermediate finger 94 is less than the diameter of spindle 16. This permits either of parts 82a and 82b to be mounted onto the spindle 16 by snap fitting the part onto the spindle.
Bushing 80 is installed on a spindle 16 by hingedly opening parts 82a and 82b as shown by arrows 110 in FIG. 11, snap fitting either of parts 82a and 82b onto the spindle 16, hingedly closing bushing 18 around the spindle 16 to snap fit the other of parts 82a and 82b onto the spindle 16. Upper and lower fingers 88 and 90 of part 82a and intermediate finger 94 of part 82b are sized and positioned such that when bushing 80 is in the closed position shown in FIG. 10, intermediate finger 94 fits between upper and lower fingers 88 and 90, thereby covering the spindle 16.
A third embodiment of the bushing of the present invention is shown at 120 in FIGS. 12 and 13 Bushing 120 may be injection molded in one piece using the same material as that used in the embodiment of FIGS. 3-6 and 9-11. Bushing 120 includes a body portion 122 and a flange portion 124 disposed at an upper end 126 of body portion 122. Bushing 120 includes a slit 128 which extends completely through flange portion 124 and from upper end 126 to lower end 130 of body portion 122. Bushing 120 also includes a number of slots 132 which extend completely through flange portion 124 and from upper end 126 to a point between Is upper end 126 and lower end 130 of body portion 122. Slit 128 and slots 132 permit bushing 120 to be flexed open to allow the bushing 120 to be pressed onto and thereby installed on a spindle 16. Slit 128 and slots 132 also provide space for thermal expansion of the bushing 120 and for the accumulation of debris from the normal wear associated with the bushing 120.
While there is shown and described herein certain specific structures embodying the invention, it will be manifest to those skilled in the art that various modifications and rearrangements of the parts may be made without departing from the spirit and scope of the underlying inventive concept. For example, the intermediate finger of the first and second embodiments may have upper and lower edges which are tapered, rather than parallel, as shown in the figures. In such a case, the space between the upper and lower fingers would be formed to positively accept the tapered intermediate finger when the bushing is installed on a spindle. Also, while the hinge 84 of the second embodiment is disclosed as being a living hinge, it will be understood that the parts 82a and 82b may be formed separately and hingedly attached using any type of hinge structure. Furthermore, while the bushings of the present invention are described for use in connection with jet engines, the bushings may be used for any application in which a bushing having the above-described properties is desirable. Accordingly, the inventive concept is not limited to the particular forms herein shown and described except insofar as indicated by the scope of the appended claims.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3887297 *Jun 25, 1974Jun 3, 1975United Aircraft CorpVariable leading edge stator vane assemblyUS3929392 *Feb 11, 1974Dec 30, 1975Nissan MotorResilient bearing structureUS3966726 *Sep 8, 1972Jun 29, 1976Akzo N.V.Process for the production of cyclic carboxylic acid imidesUS4498790 *Nov 21, 1983Feb 12, 1985United Technologies CorporationBushing securing apparatusUS4909638 *Mar 21, 1989Mar 20, 1990Daido Metal Company, Ltd.Bush bearings of male and female clinch type having at least two jointsUS5013166 *Jan 30, 1990May 7, 1991HutchinsonTorsion bar bearingUS5072821 *Dec 7, 1990Dec 17, 1991Otis Elevator CompanyEscalator/people mover bearingUS5593275 *Aug 1, 1995Jan 14, 1997General Electric CompanyVariable stator vane mounting and vane actuation system for an axial flow compressor of a gas turbine engineUS5601370 *Jul 10, 1995Feb 11, 1997Daido Metal Company Ltd.BushGB757259A * Title not available* Cited by examinerNon-Patent CitationsReference1 *Bearing Retention Methods Fiberglide (1 p.).2 *Bearing Retention Methods Rexnord (1 p.).3 *Custom Manufacturing For Critical Applications Mack Plastics Brochure (6 pp.).4 *High Performance Plastic Parts For Critical Applications Mack Plastics Brochure (5 pp.).5 *IGES Self Lubricated Bearing Designs Iglide L1 (3 pp.).6IGES Self-Lubricated Bearing Designs--"Iglide L1" (3 pp.).7 *Literature On DU, DX, Gar Fil and Gar Max Bearings Garlock Bearings, Inc. 1980 (4 pp.).8Literature On DU, DX, Gar-Fil and Gar-Max Bearings Garlock Bearings, Inc.--1980 (4 pp.).9 *Thomson Nyliner Bearing Application Data Sheet and Designers Guide Thomson Industries, Inc. 1995 (6 pp.).10Thomson Nyliner Bearing Application Data Sheet and Designers Guide Thomson Industries, Inc.--1995 (6 pp.).* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6527311Sep 12, 2001Mar 4, 2003Zeftek, Inc.Door lock for a railroad carUS6682299 *Nov 15, 2001Jan 27, 2004General Electric CompanyVariable stator vane support arrangementUS6685381 *Apr 22, 1999Feb 3, 2004Nhk Spring Co., Ltd.Retaining arrangement for a rod memberUS6708625 *Jun 29, 2000Mar 23, 2004Zeftek, Inc.Greaseless door lockUS6790000Dec 12, 2002Sep 14, 2004Rolls-Royce Deutschland Ltd & Co KgShroud for the roots of variable stator vanes in the high-pressure compressor of a gas turbineUS6887035Oct 23, 2002May 3, 2005General Electric CompanyTribologically improved design for variable stator vanesUS6887528 *Dec 17, 2002May 3, 2005General Electric CompanyHigh temperature abradable coatingsUS7094022May 27, 2003Aug 22, 2006General Electric CompanyVariable stator vane bushings and washersUS7163369Jan 4, 2006Jan 16, 2007General Electric CompanyVariable stator vane bushings and washersUS7207770Aug 19, 2005Apr 24, 2007General Electric CompanyVariable stator vane bushings and washersUS7510369 *Sep 2, 2005Mar 31, 2009United Technologies CorporationSacrificial inner shroud liners for gas turbine enginesUS7802963Feb 14, 2006Sep 28, 2010Rolls-Royce PlcPivot ringUS8123487 *Nov 20, 2004Feb 28, 2012Mtu Aero Engines GmbhRotor for a turbo engineUS8616558 *Apr 3, 2008Dec 31, 2013GM Global Technology Operations LLCTapered interlock retention system for foam overlaysUS8770930 *Feb 9, 2011Jul 8, 2014Siemens Energy, Inc.Joining mechanism and method for interlocking modular turbine engine component with a split ringUS8915224 *Dec 18, 2010Dec 23, 2014Caterpillar Inc.Rocker shaft shimUS9175571Mar 19, 2012Nov 3, 2015General Electric CompanyConnecting system for metal components and CMC components, a turbine blade retaining system and a rotating component retaining systemUS9316113 *Sep 13, 2011Apr 19, 2016SnecmaBushing for a variable set bladeUS20030170115 *Nov 15, 2001Sep 11, 2003Bowen Wayne RayVariable stator vane support arrangementUS20040115351 *Dec 17, 2002Jun 17, 2004Yuk-Chiu LauHigh temperature abradable coatingsUS20040240991 *May 27, 2003Dec 2, 2004Bruce Robert W.Variable stator vane bushings and washersUS20050003172 *Jul 22, 2004Jan 6, 2005General Electric Company7FAstage 1 abradable coatings and method for making sameUS20050164027 *Jan 13, 2005Jul 28, 2005General Electric CompanyHigh temperature abradable coatingsUS20050232757 *Dec 17, 2004Oct 20, 2005General Electric CompanyWear resistant variable stator vane assembliesUS20050276686 *Aug 19, 2005Dec 15, 2005General Electric CompanyVariable stator vane bushings and washersUS20060029494 *Oct 5, 2005Feb 9, 2006General Electric CompanyHigh temperature ceramic lubricantUS20060110246 *Jan 4, 2006May 25, 2006General Electric CompanyVariable stator vane bushings and washersUS20060198982 *Feb 14, 2006Sep 7, 2006Holland Clive RPivot ringUS20060245676 *Oct 5, 2005Nov 2, 2006General Electric CompanyHigh temperature rod end bearingsUS20070122274 *Nov 29, 2005May 31, 2007General Electric CompanyTip shroud attachment for stator vaneUS20070237631 *Sep 2, 2005Oct 11, 2007United Technologies CorporationSacrificial inner shroud liners for gas turbine enginesUS20080025844 *Nov 20, 2004Jan 31, 2008Mtu Aero Engines GmbhRotor for a Turbo EngineUS20090250968 *Apr 3, 2008Oct 8, 2009Gm Global Technology Operations, Inc.Tapered Interlock Retention System for Foam OverlaysUS20120063905 *Sep 13, 2011Mar 15, 2012SnecmaBushing for a variable set bladeUS20120152196 *Dec 18, 2010Jun 21, 2012Caterpillar Inc.Rocker shaft shimUS20120201685 *Aug 9, 2012Merrill Gary BJoining mechanism and method for interlocking modular turbine engine component with a split ringUS20130034425 *Apr 13, 2011Feb 7, 2013TurbomecaMethod for adapting the air flow of a turbine engine having a centrifugal compressor and diffuser for implementing sameCN100489278CNov 15, 2002May 20, 2009通用电气公司Variable stator blade supporting structureCN103119277A *Jul 20, 2011May 22, 2013卡特彼勒公司Cylinder head rocker arm stand repair insertDE102005042747A1 *Sep 5, 2005Mar 8, 2007Rolls-Royce Deutschland Ltd & Co KgStator guide blade crown for gas turbine has semicircular ring segments fixed to each other by annular carrier uncoupled during assemblyDE102008016991B4 *Apr 3, 2008Oct 15, 2015Hammerlit GmbhAnkopplungsvorrichtung zur Verbindung eines Etagenwagens mit einem TransportwagenDE102009038623A1 *Aug 26, 2009Mar 10, 2011Rolls-Royce Deutschland Ltd & Co KgGuide blade ring for impeller of aircraft gas turbine, has adjustable guide vanes, which are mounted over external pivot pin and internal pivot pin in bearing holes of compressor housing and of inner cover band made of one-piece segmentsDE102009038623B4 *Aug 26, 2009Jan 19, 2012Rolls-Royce Deutschland Ltd & Co KgLeitschaufelkranz f�r den Verdichter einer FluggasturbineEP1205639A1 *Nov 6, 2001May 15, 2002General Electric CompanyInner shroud retaining system for variable stator vanesEP1312764A2 *Nov 14, 2002May 21, 2003General Electric CompanyVariable stator vane support arrangementEP1319844A1 *Oct 16, 2002Jun 18, 2003Rolls-Royce Deutschland Ltd & Co KGShroude for retaining blade shafts of adjustable stator vanes in a high pressure compressor of a gas turbineEP1705341A2Feb 4, 2006Sep 27, 2006Rolls-Royce plcPivot ringEP1705341A3 *Feb 4, 2006Mar 25, 2009Rolls-Royce plcPivot ringEP1760272A2 *Aug 31, 2006Mar 7, 2007United Technologies CorporationSacrificial inner shroud liners for variable guide vanes of gas turbine enginesEP2706246A1 *Sep 6, 2012Mar 12, 2014Gbb, LlcInterlocking bearingEP3009696A1 *Sep 6, 2012Apr 20, 2016GGB, Inc.Interlocking bearingWO2014089642A1 *Dec 20, 2013Jun 19, 2014Rotacaster Wheel LimitedAxel bush* Cited by examinerClassifications U.S. Classification415/160, 384/273International ClassificationF01D17/16, F02C7/00, F04D29/56Cooperative ClassificationF16C33/04, F01D17/162, F16C43/02European ClassificationF16C33/04, F16C43/02, F01D17/16BLegal EventsDateCodeEventDescriptionJan 20, 1999ASAssignmentOwner name: MACK PLASTICS CORPORATION, RHODE ISLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MACK, JAMES P.;MACK, EDWARD J.;REEL/FRAME:009726/0617Effective date: 19990104Feb 12, 2001ASAssignmentOwner name: GENERAL ELECTRIC COMPANY, NEW YORKFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MACK PLASTICS CORPORATION BY: EDWRD J. MACK II, PRESIDENT;REEL/FRAME:011533/0413Effective date: 20000501Jan 28, 2004REMIMaintenance fee reminder mailedJul 12, 2004LAPSLapse for failure to pay maintenance feesSep 7, 2004FPExpired due to failure to pay maintenance feeEffective date: 20040711RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services

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text:
4 bedroom detached house for sale in Cavendish Road, Tean, Staffordshire, ST10
www.rightmove.co.uk/property/64092367
New to the market, this SPACIOUS and well presented FOUR BEDROOM DETACHED is situated in a desirable location in TEAN, with stunning views over open countryside to the rear. Briefly comprising; hallway, kitchen/diner, separate dining room, lounge, conservatory and downstairs cloakroom. To the first floor are four good sized bedrooms, one with ensuite, and family bathroom. Outside is an integral garage and generous garden. Viewing is highly recommended.
Property ref: 121_2393_4571404
With external door to front elevation, stairs to first floor and radiator.
Contemporary kitchen with various base and eye level units with complimentary work surface and tiled splashback. One and half bowl stainless steel sink with drainer and mixer tap. Four ring gas hob with extractor over, integrated oven and grill. Integrated fridge and freezer, space for two further appliances. Breakfast bar with space for two stools, further ample space for kitchen table. Window and external door to rear elevation. Door to -
With up and over garage door, wall mounted central heating boiler, power and lighting.
5.14m x 3.56m (16' 10" x 11' 8")
Feature fireplace with coal effect gas fire, marble effect insert and hearth, wooden surround and mantle. Bay window to the front elevation, radiator.
3.02m x 2.76m (9' 11" x 9' 1")
With radiator and doors leading to -
3.47m x 2.63m (11' 5" x 8' 8")
Of brick and uPVC construction, door leading to garden, fan/light.
With useful walk in wardrobe, bay window to the front elevation, radiator, door to -
Part tiled, with corner shower cubicle, WC, wash hand basin and obscured window to the side elevation.
With built in double wardrobe, radiator and window to the rear elevation with far reaching views over open countryside.
With window to the rear elevation with superb views, radiator.
3.50m x 2.59m (11' 6" x 8' 6")
With built in double wardrobe, window to the front elevation and radiator.
Part tiled, comprising bath, WC, wash hand basin, radiator and obscured window to the rear elevation.
Approached by block paved drive with parking for two cars and nicely presented fore garden. Access to the rear is to both sides of the property. To the left of the house is a shed which is included in the sale. To the rear is a slabbed patio area with superb views over open countryside. The garden is laid mainly to lawn with mature borders containing various plants, shrubs and trees. Cold tap.
To view this media, please visit the on-line version of this page at www.rightmove.co.uk/property-for-sale/property-64092367.html
Disclaimer - Property reference 4571404. The information displayed about this property comprises a property advertisement. Rightmove.co.uk makes no warranty as to the accuracy or completeness of the advertisement or any linked or associated information, and Rightmove has no control over the content. This property advertisement does not constitute property particulars. The information is provided and maintained by Draycotts, Staffordshire. Please contact the selling agent or developer directly to obtain any information which may be available under the terms of The Energy Performance of Buildings (Certificates and Inspections) (England and Wales) Regulations 2007 or the Home Report if in relation to a residential property in Scotland.

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I'm Irish What's your superpower Black Hooded
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Hooded sweatshirt made of a 50/50 blend of cotton and polyester. It features double-needle stitched at stress points, a front pouch pocket, a two-ply hood with grommets and drawstring, concealed seams on cufs and a seamless body with set-in sleeves.
S	27 20
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Amazon.com: Amish Widow's Story (Audible Audio Edition): Samantha Price, Heather Henderson, Audible Studios: Books
Amish Widow's Story Audible Audiobook – Unabridged
Samantha Price (Author), Heather Henderson (Narrator), Audible Studios (Publisher) & 0 more
Samantha Price (Author), Heather Henderson (Narrator), Audible Studios (Publisher)
Abiding Mercy: Amish Mercies series, Book 1
The Hope Jar: The Prayer Jars, Book 1
Arms of Mercy: Amish Mercies Series, Book 2
ASIN: B07659SFDR
#3044 in Books > Christian Books & Bibles > Literature & Fiction > Amish & Mennonite
#3070 in Books > Christian Books & Bibles > Literature & Fiction > Romance > Amish
#32497 in Books > Literature & Fiction > Genre Fiction > Religious & Inspirational
4.0 out of 5 starsLOVE NEEDED FOR MARRIAGE
AMISH WIDOW'S STORY by Samantha Price. Expectant Amish Widows # 14
Hannah, wanting to obey her father, and wanting marriage. Women of her community were encouraging, saying love comes after. It was a daily struggle, a test.of faith for her, and now what. She was young, a baby to come, yet another marriage would be for love. Can an old love she had become a new love. This was an emotional look at the young, anxious to get on with life. Not knowing for sure, how to speak out, for what they want. Lessons were hard learn, it made the commitment of love and marriage stronger for them.
.Beautifully told by Samantha, and readers will remember this long after reading.
This is a tale of bad timing in romance. We can't always know what God plans for us. Sometimes he wants us to grow a little before our dreams are realized. But the time is right and we have such joy when we wait for God's time.
It deserves being rated 5 stars because of the good concept and writing. Her booksare very uplifting!
This book was very well written. The story line kept me reading until I finished the book. It was exciting, wondering what was going to happen, how two people that grew up together, had grown apart, had a special attachment toward each but never explored it. Then life bring them together where they are finally able to get together. A beautiful love story .
5.0 out of 5 starsA heart string puller for sure and certain.
What a twist! Sure held my interest. If I were her, I would have told that girl to get her own frying pan and cook her own eggs, and clean the mess up, that she made all over the kitchen, not wait on her, and clean up her mess. . I would not have waited on her when told to get me 'this or that'.
5.0 out of 5 starsAmish Widow' s Story
Gave five stars----this series of books have been wonderful!! Nice clean romance---with up a & downs of life!! Love the
Amish stories---they are so interesting to me---especially the Amish lifestyle!!! HIGHLY recommended to everyone!!
5.0 out of 5 starsAnother Winner by Samantha Price!
What a great story with great characters and an exciting storyline! You'll enjoy this great romance with twists and turns, disappointments, tragic circumstances and a marriage that came at the right time.
I enjoyed this book just as good as others in this series. All of books are good. Great series to add to your library
This is a great story about second chance with your first love and the mistakes made along the way. Hannah has such a sweet spirit in dealing with Lizzy.
5.0 out of 5 starsWife likes these books
The wife enjoys this author and her books about the Amish
5.0 out of 5 starsWatch out Lizzy is loose.
Amish Widow's Story by Samantha Price;
This story has up's an down in it but it is a really great spell catching story once you finish the first page, you won't want to...Read more
A wonderful Amish story, showing God's love throughout. A wonderful story.
Good reading each book is a little different and ypu learn alot of the amish rules. Tnanks for a good book.
An easy to read Amish story that has well developed characters. I found it very refreshing to read delightful story.

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text:
Medbio Inc.: Board of Directors - Bloomberg
Company Overview of Medbio Inc.
Medbio Inc. INSIDERS ON Board Members
Ronald Williams Ph.D. 1 Relationships Chairman of the Board Medbio Inc. --
Rajesh Kothari 1 Relationships Member of the Board of Directors Medbio Inc. --
Most Connected People on the Medbio Inc. Board
Rajesh U. Kothari 1 Relationships
Ronald A. Williams Ph.D. 1 Relationships
To contact Medbio Inc., please visit . Company data is provided by S&P Global Market Intelligence. Please use this form to report any data issues.

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