FIELD OF THE INVENTION 
       [0001]    The invention is in the field of electrically operated adjustable bed mechanisms. This utility invention involves a kind of adjustable bed mechanism, mainly used in adjustable electrically operated beds. 
       DISCUSSION OF RELATED ART 
       [0002]    In presently existing technology, a variety of electrically controlled adjustable beds are used for adjusting the position of a user. Unfortunately, the construction has been complicated, at high cost and large volume of space. Also, the adjustment functions are limited. Therefore, the present invention seeks to present an improved electrically controlled adjustable bed. 
       SUMMARY OF THE INVENTION 
       [0003]    The adjustable bed has electrical control of a lower thigh board portion and a back board portion. From a flat position, the lower sideboard and back board can be independently raised to a maximum inclination angle. The apparatus has a variety of parts including a back board support, and a calf board support, both of which are attached to a fixed base plate which remains prone. A bridge piece is attached to the bottom of the fixed base plate. The bridge piece has a pair of sections including the front part bridge piece rear bridge piece also called the behind part bridge piece. A back board support is made as a frame or member pressing up to support the backboard. The rear bridge piece has a connection to the thigh board support. A tail block film threading is preferably formed as a plate upon which a slot pocket shaped footboard film threading fixes on top of. The end plate films threading attaches to the footboard for securing the footboard. The head film threading analogously secures the bed headboard film threading to the headboard. A back board support end and electrical control bed underframe crosstie hinge joints. A back board support and another end of the bedboard&#39;s back board are hinge jointed. A calf board support end is connected to underframe crosstie hinge joint for moving and supporting the calf board support. The other end of the calf board has a calf board bridge piece for support. 
         [0004]    The electrical motor assemblies include a forward electrical motor assembly and a rear electrical motor assembly. The forward electrical motor and the rear electrical motor assembly are preferably widthwise offset so that one is on the right and the other is on the left part of the under portion of the bed. 
         [0005]    The user can adjust the thigh board through the electrical motor machinery for operating and controlling thigh board and calf board angles. The electrical machinery also drives the bridge piece, and the thigh board support to rotate on an axle. The thigh board support is supported by a roller which raises the thigh board to a continuously variable desired inclination angle gradually as the user desires. The calf board and the thigh board therefore are both continuously variable in inclination angle. The calf board support restricts the motion of the calf board so that preferably the thigh board has a maximum inclination angle of approximately 59 degrees. The preferred maximum angle between the calf board and thigh board is 113°. 
         [0006]    The rear electrical motor assembly is connected to the front bridge piece which is secured to the fixed base plate. The front electrical motor assembly is connected to the rear bridge piece which is secured to the fixed base plate. The bed is supported on a bedboard support which in turn is supported on a pair of front rollers and a pair of rear rollers the roll on an underframe crosstie. The underframe crosstie is formed as a pair of rails or tracks upon which a front left roller, a front right roller, a rear left roller and a rear right roller roll on. The rolling of the bed is relative to the underframe crosstie is restricted by the backboard support which is pivotally connected to the underframe crosstie at a lower end and pivotally connected to a backboard bridge piece at an upper end. The first electrical machinery bridge piece forms an angle with the backboard support member. The second electrical machinery bridge piece forms an angle with the thigh board support member. The back board bridge piece is connected to the backboard, which in turn is pivotally connected to the fixed base plate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  is a schematic of the present invention showing the structure of the adjustable bed when set level, showing the mattress on top of the adjustable structure and the headboard connection. 
           [0008]      FIG. 2  is a schematic drawing of the present invention showing main revolution axes. 
           [0009]      FIG. 3  is a drawing of the apparatus in raised position with raised forehead and raised thigh portion. 
           [0010]      FIG. 4  is a drawing of the apparatus in raised position with raised forehead and raised thigh portion. 
           [0011]      FIG. 5  is a drawing of the mechanical apparatus and structural elements that support the boards of the bed. 
       
    
    
       [0012]    Due to the large number of moving parts, the reader is invited to review the list of elements in the drawings before reviewing the detailed description of the preferred embodiment. The drawings disclosing the present invention refer to elements listed as follows: 
         [0013]    Bed Headboard  1   
         [0014]    Film Threading  2   
         [0015]    Back Board  3   
         [0016]    Back Board Roller  4   
         [0017]    Back Board Bridge Piece  5   
         [0018]    Back Board Support  6   
         [0019]    First Fixed Bridge Piece  7   
         [0020]    Back Board Hinge  8   
         [0021]    Fixed Base Plate  9   
         [0022]    Front Bridge Piece  10   
         [0023]    Rear Bridge Piece  11   
         [0024]    Thigh Board Hinge  12   
         [0025]    Thigh Board Bridge Piece  13   
         [0026]    Bed Board Support  14   
         [0027]    Thigh Board  15   
         [0028]    Calf Board Hinge  16   
         [0029]    Calf Board  17   
         [0030]    Calf Board Bridge Piece  18   
         [0031]    Film Threading  19   
         [0032]    Footboard  20   
         [0033]    Film Threading  21   
         [0034]    Footboard Bridge Piece  22   
         [0035]    Calf Board Support  23   
         [0036]    Calf Board Support Bridge Piece  24   
         [0037]    Aft Bedboard Support Roller  25   
         [0038]    Thigh Board Roller  26   
         [0039]    Thigh Board Support  27   
         [0040]    Behind Bridge Piece  28   
         [0041]    Second Electrical Machinery Bridge Piece  29   
         [0042]    Rear or Second Electrical Motor Assembly  30   
         [0043]    Front or First Electrical Motor Assembly  31   
         [0044]    First Electrical Machinery Bridge Piece  32   
         [0045]    Front Part Bridge Piece  33   
         [0046]    Fore Roller  34   
         [0047]    Underframe Crosstie  35   
         [0048]    Back Board Support  36   
         [0049]    Bed headboard Bridge Piece  37   
         [0050]    Film Threading  38   
         [0051]    First Revolution Axis  101   
         [0052]    Second Revolution Axis  102   
         [0053]    Third Revolution Axis  103   
         [0054]    Fourth Revolution Axis  104   
         [0055]    Fifth Revolution Axis  105   
         [0056]    Sixth Revolution Axis  106   
         [0057]    Seventh Revolution Axis  107   
         [0058]    Eighth Revolution Axis  108   
         [0059]    Ninth Revolution Axis  109   
         [0060]    Tenth Revolution Axis  110   
         [0061]    Eleventh Revolution Axis  111   
         [0062]    Twelfth Revolution Axis  112   
         [0063]    Thirteenth Revolution Axis  113   
         [0064]    Fourteenth Revolution Axis  114   
         [0065]    Fifteenth Revolution Axis  115   
         [0066]    Sixteenth Revolution Axis  116   
         [0067]    Seventeenth Revolution Axis  117   
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0068]    As seen in figure  FIGS. 1-5 , the preferred embodiment of the adjustable bed includes a bed headboard  1 , a film threading  2  outside the bed head plate, a back board  3 ; a back board roller  4 ; a back board bridge piece  5 ; a back board support  6 ; a first fixed bridge piece  7 ; a back board hinge  8 ; a fixed base plate  9 ; front bridge piece  10 ; a rear bridge piece  11 ; a thigh board hinge  12 ; thigh board bridge piece  13 ; a bedboard support  14 ; a thigh board  15 ; a calf board hinge  16 ; a calf board  17 ; a calf board bridge piece  18 ; an outside footboard film threading  19 ; a footboard  20 ; a footboard film threading  21 ; a footboard bridge piece  22 ; a calf board support  23 ; a calf board support bridge piece  24 ; an aft bedboard support roller  25 ; a thigh board roller  26 ; a thigh board support  27 ; a behind bridge piece  28 ; a rear or second electrical machinery bridge piece  29 ; a rear or second electrical motor assembly  30 ; a front or first electrical motor assembly  31 ; a first electrical machinery bridge piece  32 ; a front part bridge piece  33 ; a before bedboard support, fore roller  34 ; an underframe crosstie  35 ; a back board support  36 ; a bed headboard bridge piece  37 ; and an in bed headboard film threading  38 . Also, there is a controller for controlling the second electrical motor assembly in the front electrical motor assembly. The controller is preferably wired and having wires to connect to the pair of electrical motor assembly under the bed. The controller would at the very least have a power control for turning on and turned off the power, and the controller would have a first control for raising and lowering the angle of the backboard and the second control for raising and lowering the angle of the thigh board. The controllers can be made according to commonly available technology. The first electrical motor assembly and the second electrical motor assembly both have an extending arm for extending the length of the electrical motor assembly. The extending arm is also commonly available technology. 
         [0069]    The present embodiment includes a bedboard support  14  formed as a rigid frame supporting a plurality of boards attached to a fixed base plate  9 . The fixed base plate  9  permanently rigidly connected to the bedboard support  14 . A first actuate bridge piece also called the rear bridge piece  11  is rigidly secured to fixed base plate  9 . The first electrical motor assembly  31  is pivotally connected to actuate against the bridge piece  11  at the ninth revolution axis  109  rotation connection when the first electrical motor assembly extends or contracts its length. The first electrical motor assembly  31  actuates and is pivotally connected to a first electrical machinery bridge piece  32  at an end portion which in turn rotates on the seventh revolution axis  107  rotation connection. The angle between the first electrical motor assembly  31  and the first electrical machinery bridge piece  32  decreases when the first electrical motor assembly  31  extends in length. The first electrical machinery bridge piece  32  rotates clockwise upon length extension of the first electrical motor assembly  31 . 
         [0070]    The first electrical machinery bridge piece  32  has another end that is rigidly connected to and actuates a front part bridge piece  33 . The back board support  6  end and front part bridge piece  33  have rigid permanent connection such that the angle between them does not change during extension of the first electrical motor assembly  31 . The front part bridge piece  33  is pivotally connected to first fixed bridge piece  7  and pivots clockwise on the fifth revolution axis  105  rotation connection. The first fixed bridge piece  7  and bedboard support  14  are in rigid permanent connection. 
         [0071]    The back board roller  4  installs on second revolution axis  102  in the back board support  6 . Another end of the backboard has the back board bridge piece  5  with the back board  3  in permanent connection. A back board support  36  has an end and the back board bridge piece  5  pivot on the third revolution axis  103  rotation connections. The back board support  36  has another end which is a lower end that is pivotally connected to the underframe crosstie  35  and the axis is the first revolution axis  101  rotation connection. Before the bedboard support, the roller  34  installs through fourth revolution axis  104  and the roller  34  rolls on the underframe crosstie  35 . 
         [0072]    The bedboard support  14  front portion, is in rigid permanent connection with bridge piece  10  and fixed base plate  9 . The Rear Electrical Motor Assembly  30  rear portion when actuated pivots in relation with the bridge piece  10  on the eighth revolution axis  108  rotation connection. The Rear Electrical Motor Assembly  30  front portion is pivotally connected and actuates a rear portion electrical machinery bridge piece  29  end on the 11th revolution axis  111  rotation connection. The latter electrical machinery bridge piece  29  has another end with the behind bridge piece  28  in rigid permanent connection. A thigh board support  27  has an end that is pivotally connected to the behind bridge piece  28 , behind the bridge piece  28  on the securing bridge piece  13  via the 12th revolution axis  112  rotation connection. 
         [0073]    The securing bridge piece  13  is rigidly connected to the bedboard support  14 . The thigh board support  27  has another end upon which is installed the thigh board roller  26  via the 13th revolution axis  113 . The calf board bridge piece  18  is rigidly mounted to the calf board  17  and a calf board support  23  has an end that connects to the calf board bridge piece  18  on a 17th revolution axis  117  rotation connection. The calf board support  23  has another end in pivotal connection with calf board support bridge piece  24  via a 16th revolution axis  116  rotation connection. 
         [0074]    A calf board support bridge piece  24  is rigidly permanently connected to bedboard support  14 . Below that, the bedboard support has a roller  25  installed on the 15th revolution axis  115  which is mounted on the bedboard support  14  lower portion. A back board hinge  8  connects to a lower end of the back board  3 . The back board hinge  8  has another end that is connected to the fixed base plate  9 . Similarly, a thigh board hinge  12  has an end that is mounted to the fixed base plate  9  in pivotal permanent connection. The thigh board hinge  12  has another end that is permanently connected to the thigh board  15 . The calf board hinge  16  has an end permanently connected to thigh board  15 . The calf board hinge  16  also has another end that is permanently connected to calf board  17 . 
         [0075]    The outside bed headboard film threading  2  and bed headboard  1  are in permanent connection. The bed headboard film threading  38  formed as a bracket and bed headboard bridge piece  37  are in permanent connection. The bed headboard bridge piece  37  and the underframe crosstie  35  are in permanent connection. The outside bed headboard film threading  2  and in bed headboard film threading  38  have coordinating geometry to fit together. The outside footboard film threading  19  and footboard  20  have permanent connection. The footboard film threading  21  and footboard bridge piece  22  have permanent connection. The footboard bridge piece  22  and underframe crosstie  35  are in permanent connection. The outside footboard film threading  19  and in footboard film threading  21  have coordinations such that coordinating geometry allows them to fit together. 
         [0076]    The interface of this invention&#39;s film threading preferably uses the KD type card for simplicity and reliability. The KD card type is a known industry standard where an angled planar member secures and fits inside an angled pocket. 
         [0077]    During practical application, the user uses the controller to activate and cause the Front Electrical Motor Assembly  31  rear part to rotate the bed by pushing against the ninth revolution axis  109  which rotates and drives the electrical machinery bridge piece  32  and the back board support  6  on the fifth revolution axis  105  in rotation. The front electrical motor assembly  31  is also called the first electrical motor assembly  31 . The first electrical machinery  31  pushes the first electrical machinery bridge piece  32  on the seventh revolution axis  107  in rotation. The back board support  6  on back board rollers  4  rotates about the second revolution axis  102  rotation, supports the back board  3  and rotates about the sixth revolution axis  106  to increase the climb of the inclination angle gradually to a desired angle. The backboard support  6  also causes the backboard support  36  to increase the inclination angle relative to the underframe crosstie  35  that rotates on first revolution axis  101 . The third revolution axis  103  provides the back board rotation to a certain angle, and also raises the roller  34  and the bedboard support. The roller  25 , as the bed levels, approaches slowly toward the underframe crosstie  35  front end. This embodiment preferably establishes a back board  3  having a maximum inclination angle of 58 degrees. See  FIG. 3 . 
         [0078]    Similarly, the user can control the Rear Electrical Motor Assembly  30  rear parts through the controller revolve on the eighth revolution axis  108  and actuate the electrical machinery bridge piece  29 . After the front end elongation of the Rear Electrical Motor Assembly  30 , the electrical machinery bridge piece  29  in turn raises the thigh board support  27  which rotates on the 12th revolution axis  112 . Below the Rear Electrical Motor Assembly  30  is the bridge piece  29  rotating on the 11th revolution axis  111  which allows rotation of the electrical machinery bridge piece. The thigh board support  27  has thigh board rollers  26  that rotate about the 13th revolution axis  113 . The thigh board rollers  26  support the thigh board  15  which rotates about the tenth revolution axis  110 . This raises the inclination angle gradually to a desired level. Simultaneously, the calf board  17  rises in proportion to the inclination angle and moves relative to the underframe crosstie  35  which rotates about the 
         [0079]      14 th revolution axis  114 . 
         [0080]    The thigh board  15  rises to a certain angle along with the thigh board, and raises the calf board support  23  which pivots on the 16th revolution axis  116  and the 17th revolution axis  117 . The thigh board  15  rises relative to the underframe crosstie  35  to a certain angle. In this preferred embodiment, the final thigh board  15  maximum inclination angle is preferably about 59°. Between the calf board  17 , and the thigh board  15  the smallest inside angles is preferably about 113 degrees again as seen in  FIG. 3 . This embodiment Front Electrical Motor Assembly  31  and Rear Electrical Motor Assembly  30  may simultaneously or independently move the bed under the user&#39;s control. The back portion and the side portion can be activated independently. In this preferred embodiment, the revolution axis prefers usage of a bolt, pin or rivet. 
         [0081]    While the presently preferred form of the system has been shown and described, and several modifications thereof discussed, persons skilled in this art will readily appreciate that various additional changes and modifications may be made without departing from the spirit of the invention, as defined and differentiated by the following claims.
The present invention relates to a type of adjustable bed having junctions with equipped back support board, calf board support, front part bridge piece, back board support, rear bridge piece, thigh board support, back board support end and underframe crosstie woggle joint. The back board support has another end and is connected to the bedboard's back board woggle joint. A calf board support end and underframe crosstie woggle joint, and calf board support a calf of a user. Electrical machinery connection actuates the board members. A roller raises the back support and a separate roller raises the thigh board support. This model utility bed headboard footboard and the bed frame use the KD type card to meet.