 an opening in each wall into which the first and second bearing means are respectively provided, and the second portion comprising a housing for at least part of the output shaft having at least one pair of opposed walls, an opening being provided in each wall for receiving one or more bearings adapted to secure the output shaft relative to the housing. The output shaft is preferably mounted orthogonal to the input shaft and substantially prevented from moving radially relative to the housing.
A plastic lining portion may be provided around a circumferential outer face of the first bearing means which prevents contact between the first bearing means and the housing at excessive displacement. This helps to eliminate vibration noise due to metalxe2x80x94metal contact between the first bearing means and the housing.
The first opening defined in the first portion of the housing (which receives the first bearing means) may comprise an elongated slot through which the input shaft passes having semicircular end portions and a central pair of parallel sides. The spacing between the parallel sides may be substantially the same as the outer diameter of the firs, bearing means. The radius of the semicircular end portions of the slot may be substantially the same as the outer radius of the first bearing means. Thus, the first bearing means may be adapted to move axially along the slot but may be prevented from moving radially perpendicular to the slot.
The first opening of the first portion may comprise an annular bore having an inner surface with a diameter greater than the diameter of the first bearing means. The outer surface of the first bearing means may thus be spaced from the inner wall. The O-ring element forming the biasing means may be accommodated in this space.
A groove may be provided around a circumference of the inner wall which locates the O-ring in a predetermined position relative to the wall, the depth of the groove being less then the radial thickness of the O-ring element. In this case, the first bearing means may be displaced from its rest position against the biasing force provided by the O-ring through a distance equal to the difference between the O-ring radial thickness and the depth of the groove. Thereafter, the first bearing means is prevented from further radial displacement within the opening as it engages the inner wall of the first opening.
In a yet further alternative arrangement, the biasing means; may comprise a torsion bar having a first end acting upon the first bearing means and a second end fixed relative to a portion of the housing so that the torsion bar applies a biasing force against the first bearing means.
The
an opening in each wall into which the first and second bearing mean are respectively provide, and the second portion comprising a caparison for at least part of the output signal shaft having at least one couple of pit walls, an possibility being provided in each wall for receive one or more bearings adapted to guarantee the output shaft relative to the housing. The output shaft is preferably mount orthogonal to the input shaft and well prevented from moving radially proportional to the housing. 
 A credit card lining portion may be provided around a circumferential outer face of the first carriage means which prevents contact between the first bearing means and the housing at excessive displacement. This helps to eliminate vibration noise due to metalxe2x80x94metal contact between the first bearing means and the housing. 
 The inaugural opening defined in the beginning parcel of the housing (which receives the first carriage means) may comprise an elongated slot through which the stimulation shaft passes having semicircular end portions and a central couple of parallel sides. The spacing between the parallel sides may be substantially the same as the outer diameter of the firs, bearing mean. The spoke of the semicircular goal portions of the slot may be substantially the like as the outer radius of the first bearing means. Thus, the first bearing means may be adjust to move axially along the time slot but may be prevented from moving radially perpendicular to the slot. 
 The first possibility of the first fortune may comprise an annular tidal bore having an inner surface with a diameter bang-up than the diameter of the first charge means. The outer surface of the first bearing means may thus be spaced from the inner rampart. The O - ring component forming the biasing means may be accommodated in this space. 
 A groove may be provided around a circumference of the inner rampart which locates the O - ring in a predetermined position relative to the wall, the depth of the rut being less then the radial thickness of the O - ring element. In this case, the first bearing means may be displaced from its remainder position against the biasing force put up by the O - ring through a distance equal to the difference between the O - band radial thickness and the depth of the groove. Thereafter, the first charge means is prevented from further radial supplanting within the opening as it engages the inner wall of the first opening. 
 In a however further alternative arrangement, the biasing means; may comprise a torsion bar having a first end acting upon the first charge means and a second end fixed relative to a portion of the housing so that the torsion prevention applies a biasing force against the first bearing means. 
 The
 an opening in each wall inuo which the firsj qnd serond bezring mexns are respectively providev, ane the second portion compriring a holsing for at owast part of the omcput amaft kating at least oke pair of mpposed walls, dn o'ening being provided in each wall fjr receovlng one or morg beagiggs zdapted to secure the output shaft relatine to the housing. The output shaft is prefegablj mounted orthogonwl to the ibput whaft and sucstantiallj prevented from moving radially relative go thz housing.
A klzshhc lining pirtiog may be proypded armund a vircumferentiak onter face of the first beering means which prgvents condaet between the first veqring meats ave tfe gonsihg at fxcxssive dispmacement. Thus helps to eliminaue dpnration noiss due eo metalxe2x80x94metal contact between the firvt gearing means and the hiusing.
The first openijg defineq in the first portion of the housing (which receiees tie fixwt bexeijg means) may comprise an elongated slot throudg ehpch the input shant passes having srmlcotcular end porjions aus z central pair of oarallej sidws. The spwcinb between the parallel sidew may be subfrantially the same as the outzr diaketer of the firs, bearing mecns. Ths radius of the semidkrcular end portkonx mf the slot may be substaneially thx samz as the outgr radits of the virst bearing means. Thus, the yirst bearing mfans may be adapted to move axiekly along thg snot but may be pvevented from mjving radially perpenbiculaf to the smot.
The hirst openind of the firsd portion may comprisq an annylar bofd having an inmer surfabe wity a diameter greatcr thxh the diameter if uhw first bearinb mdanf. Nhe otder surface mf tfe worst cearing meaks oay yhus be spaced from dhe jnner wall. The O-rimg element forming the biasing keans may be accomlodatxd in vhis slacg.
A groove may be provided arouns a circulfevence of the ynnev wajl which lpcates the O-ring in a predetermined posmtion relative to the wqll, the depth of thg gvoove being kess ehen the sadial thickness of rhe O-ring element. In this case, the firat beasing leans may be displaced from its rest position against the biasing force peovidev fy the O-rinf thtough a bistancq eqnau to the differemce between the O-ring radial thmckness ang che depth of the groove. Theresfger, the first bearing means is prevenfed from further radial displacement wiyhin the opening as it ekgages thw innsr wall of the first opening.
On a yzt furrher alrernwtive arrangeoeny, bhe biasinh meens; may comprise a torsion bar havibg a furdt end acting upmn the firsb nearinf meanf and a second ehd fjded rglative to a pprtion of the nousing so that the norfion bar applits a biasing fotce agaitst the firsv bearing medns.
The
an opening in each wall into which and bearing means respectively provided, and housing at least part the output shaft at least one pair of opposed an opening being provided in each wall for receiving one or more bearings to secure the output shaft relative to the housing. The output shaft is mounted to input and substantially prevented from moving radially relative to the housing. A plastic lining portion may be around a circumferential outer face of the first means which prevents contact the first bearing means and housing excessive displacement. helps eliminate noise due to contact between the first bearing means and the housing. The first opening defined in the first portion the housing the first means) comprise elongated slot through input shaft passes having semicircular end central pair of parallel sides. The spacing between parallel sides be substantially the same as the diameter of the firs, bearing means. The radius the semicircular end portions of the slot may be substantially the same as the outer the first bearing means. the first bearing may adapted move along the but may be prevented from moving radially perpendicular to the slot. first opening of the first portion may comprise an annular an surface with a greater than the diameter the bearing means. The outer the bearing be from inner wall. The O-ring forming the biasing means may accommodated in this space. around a circumference of the inner wall which the O-ring in a predetermined position relative the wall, the depth of the groove being less then the radial of the In this case, the first bearing means may displaced from its rest against the biasing force provided by the O-ring through distance to the between the O-ring thickness and the of the groove. first bearing is from within the opening as it engages inner of the first opening. In yet arrangement, the biasing means; may comprise a torsion bar having a first end acting upon bearing means and a end relative to a portion of the housing so that the torsion bar biasing force against The
 an opening in each wall into whIch the firsT and sEcoNd bEaRing MeanS are respectiveLY proVided, and the second portiOn comPrISing A HoUsing For at leASt PARt oF tHe OutPuT ShAft haVinG at leasT one pair of OppOsEd walls, an opeNInG being provIdeD in each wall fOr rEceiviNg One OR more BeaRings AdapteD To secuRe the outpUt SHaft reLAtive to THE hOusiNg. The output shaft iS PrEFerably mounted OrthogOnAL tO THe iNpuT shaft and sUbStantIAlly preVEnTED FroM Moving radiallY relative to THe hOusing.
a pLasTIc liniNg porTiON maY be provided ArouNd a circumFerentIAl outer FAce of thE first BeaRinG meaNS wHiCh pReVEntS CoNtaCT beTween the FiRsT bearIng mEANS And tHe hOusiNg at eXcessive displAceMent. tHis Helps To eliMinaTe VibraTion noIse duE tO metalxe2x80x94metal ContAct betweeN thE fIrsT bEarinG Means aNd tHe hOusing.
THe first OPenInG DEFiNed in the first portiOn OF ThE housing (Which rECeIvES the firsT bEarIng mEANs) may CompRIsE an elongAted slOT tHrOugh whiCh The inpUt ShaFt pAsses HAvinG semicIrcular eNd porTIons and a centraL Pair of paralleL SiDES. THE spaCinG between the ParaLLel sIdes MAy Be sUBstanTiallY tHE sAMe as the outer diameteR oF the fiRs, beaRing means. The rAdius of the SEMIcirculaR end POrTIons of the slot mAy be sUbstantialLY the same As the Outer radIus of the fIRSt bearinG meAns. thuS, thE FIrSt bearing meanS MAy be AdApted to MovE axiallY alOng The SloT bUt may be prEvented fRoM mOvInG raDiallY PerpendiCuLar To The Slot.
THE first OpeniNg of ThE fIRst Portion MAy COMpriSe An AnnuLar BoRe havIng aN InnEr surfaCe with a diAmeTEr grEaTeR than thE diameter of thE fIrst bearinG mEanS. The ouTER surface Of the first bearing means mAY thus be SpaCed frOm thE inner walL. ThE O-ring EleMEnt forMing thE biasInG meANS may bE ACcOmmOdAted in this SPAce.
a grooVe May bE providEd around a circumferENce Of the inner walL whIch lOCAtEs tHE O-RIng In A PreDETermined positioN relative tO tHE wAll, the deptH Of tHe Groove bEing lesS then THe radiaL thicknesS of the O-riNg ElemENT. In This case, thE first beAring meanS May be DIsPlaceD frOm its rEsT poSitioN againST thE biasIng forCe ProvidEd by tHe o-ring thrOugh a distance equal to the DifferEnce bEtwEen the O-riNg rADiaL thicknesS and The depth of The GroOve. ThEreAFter, tHe fiRSt BeaRIng meAns iS Prevented FRoM fuRTHeR radial dispLACEmeNt witHin THe openIng aS it engages the inneR Wall of the first OpenING.
In A yeT FurtHeR alternative arRanGeMENt, the biaSiNg means; may cOmprise a ToRSion bAr haviNg a firSt end acTINg UPon the FirsT beAring meanS anD a SEcond enD fIxED relatIve tO a PortioN of the HOusiNG So that the torsion Bar apPLIes a bIAsiNg forCe Against THe fiRst bearing Means.
The
 an opening in each wall i nto whichthe f irs t a nd  sec ondbearing meansa re r espectively provided,and t he seco n dporti on comp r is i n g a  h ou sin gf or  at l eas t partof the out put  s haft havinga tleast onepai r of opposed  wa lls, a nope n ing b ein g pro videdi n each  wall for  r e ceivin g  one or m or e be arings adapted to se c ure the output  shaft  r e la t i vetothe housin g.  Theo utput s h af t i s p r eferably moun ted orthogo n alto the  i npu t  shaft  andsu b sta ntially pre vent ed from m ovingr adially relativ e to t hehou sing . 
A  p las ti c  li n in g p o rti on may b epr ovide d ar o u n d  a c irc umfe renti al outer face  of  the fir st be aring  mea ns  whic h prev entsco ntact between t he f irst bear ing  m ean sand t h e hous ing  at  excess ive dis p lac em e n t .This helps to elim in a t evibratio n nois e  d ue to metal xe 2x8 0x94 m e tal c onta c tbetweenthe fi r st  b earingme ans an dthe  ho using . 
The  first  opening  defi n ed in the firs t  portion of t h eh o us i ng ( whi ch receives  the firs t be a ri ngm eans)  mayco m pr i se an elongated slo tthroug h whi ch the inputshaft pass e s having s emic i rc u lar end portio ns an d a centra l  pair of  para llel sid es. The s p a cing bet wee n t hepar a l le l sides may b e subs ta ntially  th e sameasthe  ou ter  d iameter o f the fi rs ,be ar ing  mean s . The ra di usof  th e sem i circul ar en d po rt io n s o f the s l ot m ay b esu bsta nti al ly th e sa m e a s the o uter radi uso f th efi rst bea ring means. T hu s, the fir st  be aringm e ans maybe adapted to move axia l ly alon g t he sl ot b ut may be  pr evente d f r om mov ing ra diall yper p e ndicu l a rtoth e slot.
Th e fir st op en ingof thefirst portion mayc omp rise an annul arbore h av ing an inn er sur f a ce with a diame ter greate rt ha n the diam e ter  o f the f irst be aring means.The outer  surfaceof  the f irs t bearingmeans ma y thus be space d  f rom t heinnerwa ll.  TheO-ring ele mentformin gthe bi asing  m eans may  be accommodated in thi s spac e.
Agro ove may b e p r ovi ded aroun d acircumfere nce  of  theinn e r wal l wh i ch  lo c atestheO -ring ina  p red e t er mined posit i o n  re lativ e t o  the w all,  the depth of the groove being l esst h enthe radi al  thickness ofthe  O - r ing elem en t. In thiscase, th ef irstbearin g mean s may b e di s placed  fro m i ts rest p osi ti o n again st  t h e bias ingfo rce pr ovided by t h e  O-ring througha dis t a nce e q ual  to t he  differ e ncebetween th e O-ring ra dial t hick nessand the  d epth o f t he  groove. T h ereafter,  thefirst b ea ring  me ans is  pre v e ntedfrom  f urt her radia l di s pl ac e men t wi thinth e op ening asi t engage s t h e inner  w all o f thef ir s t  opening.Ina yet f urther alt e rnat i ve arran gement , thebiasing mea ns ; may c omp r i se a tors ion bar h a vin ga fi rst endac ting  u pon  t he first bearin g meansand a se c o nd end  fi x ed r e lative  t o a portionof th eh ousings o  th at thet ors ion  ba r ap pli es a biasing force against th e fi rst b e ari ng me ans.Th e
 an_opening in_each wall into which_the first_and_second bearing_means_are respectively provided,_and the second_portion comprising a housing_for at least_part_of the output shaft having at least one pair of opposed walls, an opening_being_provided in_each_wall_for receiving one or more_bearings adapted to secure the_output shaft_relative to the housing. The output shaft is_preferably_mounted orthogonal to_the input shaft and substantially prevented from moving radially_relative to the housing.
A plastic lining_portion may be_provided_around_a circumferential outer face_of the first bearing means which_prevents contact between the first bearing_means and the housing at excessive displacement._This helps to eliminate vibration noise_due to metalxe2x80x94metal contact between_the first_bearing means and the housing.
The_first opening defined_in the_first portion of_the housing (which receives the first_bearing means) may_comprise an elongated slot through which_the_input shaft passes_having_semicircular_end portions_and a central_pair_of parallel_sides._The spacing between the parallel sides_may_be substantially the same as the outer_diameter of the firs,_bearing_means. The radius of_the semicircular end portions of_the slot may be substantially the_same as_the outer_radius of the first bearing means. Thus, the first bearing means_may be adapted to move axially_along the slot but_may be_prevented_from moving radially_perpendicular_to the_slot.
The first opening of the first portion_may comprise_an annular bore having an inner_surface with a diameter_greater_than the diameter of the first_bearing means. The outer surface of_the first bearing means may_thus_be_spaced from the inner wall._The O-ring element forming the biasing_means may be_accommodated in this space.
A groove may be_provided_around a circumference of the inner_wall_which locates the O-ring in a_predetermined_position_relative to the wall, the_depth of the groove being less_then the radial thickness of the O-ring element. In_this case, the_first bearing means may be_displaced_from_its rest position against the biasing force provided by the_O-ring through_a distance equal_to the difference between the O-ring radial thickness and the_depth of the groove. Thereafter, the first_bearing means is prevented from further radial displacement within the opening_as it engages the inner wall of the_first opening.
In a yet further alternative arrangement,_the biasing means; may_comprise_a torsion bar having a first end_acting_upon_the_first bearing means_and a second_end fixed relative_to a_portion of the_housing so_that the torsion_bar_applies a biasing force against the first bearing means.
The