Abstract:
A dual purpose physical rehabilitation orthopedic and physical fitness exercise device for use within physical therapy facilities. The rehabilitation and exercise device includes a frame hosting a hydraulic or pneumatic system means for applying variable levels of resistance for specified exercise regimens; an activating assembly including a torsion bar, indexed platen, exercise arm assembly and a lever to act against hydraulic/pneumatic pressurized cylinders. The exercise arm assembly includes equally spaced ports and locking pins to allow altering the active length of the arm. Further, the platen contains ports, radially positioned around its facial surface to permit adjusting the angular displacement of the exercise arm through 90° either side of the horizontal. The platen also has inscribed degree indexes to define angular displacement from preset azimuth during the exercise routine.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a facility or home based, detachably installed, dual purpose as a physical rehabilitation orthopedic device and as a physical fitness exercise device having horizontal and vertical adjustment seating, attachable plinth type platforms for regimens requiring supine or prone positions, levers and adjustable resistance pneumatic or hydraulic assemblies, controls, measurements and optionally, recording capabilities.  
       BACKGROUND OF THE INVENTION  
       [0002]     This invention discloses an exercise orthopedic device which allows prescribed rehabilitative physical therapy regimens to be safely applied, controlled, measured and recorded by qualified physical therapists and technicians in treatment facilities. Further, this device may be employed as a home and/or physical fitness center (health spas) permanently or detachably installed physical fitness device to develop and maintain proper muscle toning and overall physical fitness.  
         [0003]     Weakened muscles attributed to injuries, debilitating illnesses, and surgical procedures require rehabilitative isometric as well as progressive and constant isotonic exercises to help restore strength. In the past, and currently, prescribed exercise regimens have been applied using weights, elasticized bands, serial pulley configurations and a variety of high and low tech devices and exercises to restore strength and an acceptable degree of flexibility and/or range of motion to affected muscles and orthopedic joints. Hydraulic and pneumatic exercise platforms have been employed for physical fitness as well as restorative rehabilitation therapies. In this respect, each of these devices/platforms is designed to focus on specific muscle groups and extremities. Therefore, a family of devices is required to meet total body muscular rehabilitation and physical fitness exercise regimens. Similarly, in many instances, devices designed to enhance physical fitness regimens are not fully, or safely adaptable to specific physical therapy regimens.  
         [0004]     Currently, there are no known devices or platforms which provide a spectrum of predefined measured, controlled and recorded isometric and isotonic exercise profiles to meet the diverse and variable demands of rehabilitation and physical fitness exercise regimens.  
       PRIOR ART  
       [0005]     A significant number of hydraulic, pneumatic, mechanical and suspended weight machines have been designed and patented to meet physical fitness and rehabilitation therapy requirements. These machines, activated by levers and/or pulley systems, are generally defined as variable resistance exercise or physical fitness devices offering a full spectrum of rehabilitative and physical fitness capabilities. However in evaluation, it becomes apparent that due to user accommodations and design configurations these devices are not adaptable to the full spectrum of physical fitness and rehabilitation exercise regimens. Each device however, provides a platform to perform designated exercise routines for individual body parts and muscle groups. A plurality of complementary devices would be required to meet the full spectrum of exercise routines for both physical fitness and physical rehabilitation purposes.  
         [0006]     Representative adjustable resistance exercise devices employing mechanical means of resistive forces include: 
        U.S. Pat. No. 4,757,993 to Rake which defines a mechanical exercise device employing adjustable lever arms and prestretched springs to provide variable levels of resistance.     U.S. Pat. No. 5,842,961 to Davis employs pulleys and weights to provide the adjustable resistance levels required for the regimens of rehabilitation therapy and exercise routines.     U.S. Pat. No. 6,494,819 to Borland defines an exercise device based on employment of a plurality of resilient masts, each of which when installed, provides a greater or lesser level of resistive forces for abdominal, obliques and calf-soleus muscles.        
 
         [0010]     These representative devices, and other similarly configured and related mechanical exercise and rehabilitation devices, lack the flexibility and adaptability to accommodate the spectrum of rehabilitation and exercise regimens as applicable to all body muscular and skeletal groups. Additionally, the use of weights, prestretched springs, resilient masts or any other static friction or resistance devices do not provide the degree of finite resistance measurements and adjustments necessary for effective rehabilitation therapy.  
         [0011]     Representative adjustable resistance rehabilitation and exercise devices employing pulleys, cables and pneumatic and/or hydraulic systems of resistive forces include: 
        U.S. Pat. No. 4,691,918 to Rockwell defines a system of cables and pulleys employed to engage the exercise device&#39;s resistance components which may be weights, pneumatic, devices, elastic resistance elements or any other variable resistance devices. Similarly, U.S. Pat. No. 6,491,610 to Henn defines a variable resistance type exercise device which also employs cables variably attached along the length of a set of levers.        
 
         [0013]     While these representative, and similarly configured and related, devices have application to a limited regimen of exercise and rehabilitation therapy a major deficiency focuses on the indirect activation of the levers and hydraulic/pneumatic resistance systems through a network of pulleys and/or cables. This deficiency highlights the limitations of the devices to be adaptable to the varied exercise body profiles which include exercises in the standing, sitting and supine or prone positions. Additionally, cable activated exercise devices are not readily adaptable to all extremities and prime muscular groups which are physical fitness and rehabilitation exercise targets. A third limitation of cable activating systems is the lack of rigidity and direct inflexible interface between the exerciser and the machine for positive control of movement throughout the exercise routine.  
         [0014]     A significant number of devices employing pneumatic systems to provide adjustable resistive forces to meet physical fitness and/or rehabilitation exercise requirements are defined in the index of U.S. Patents. The devices using pneumatic systems identified below provide a baseline of similar type devices which have received U.S. patents. These representative devices include:  
         [0015]     U.S. Pat. No. 4,227,689 to Keiser defines a leg exercise device employing an adjustable resistance pneumatic system comprised of a compressor, control panel with a pressure regulator and gauge, a pair of plunger activated pneumatic valves, single stroke pneumatic cylinders and air reservoir tanks and an exercise member consisting of linkage, lever and exercise pad mounted for movement along a curved path.  
         [0016]     U.S. Pat. No. 4,257,593 to Keiser defines a “weight type” exercise device which employs a similar pneumatic system, levers and linkage for controlling resistance levels for the exercise device. This device allows “weight type” exercise routines employing arm movement of the exercise member from either a standing, sitting or supine position.  
         [0017]     Similarly, U.S. Pat. No. 4,397,462 to Walmarth, U.S. Pat. No. 4,728,101 to King, and U.S. Pat. No. 4,911,436 to Lighter, define variations of pneumatic exercise devices configurations basically similar to those patents to Keiser, as defined above. The primary limitations of these devices, collectively, is their lack of flexibility and adaptability to a full spectrum of fitness and rehabilitation exercise regimens.  
         [0018]     A significant number of hydraulically controlled resistance exercise devices, each device being a variation of pneumatic devices identified above, have also been reviewed and a representative listing of these devices is provided below:  
         [0019]     U.S. Pat. No. 6,413,195 B1 to Barzelay discloses a passive/active hydraulic exercise device which may be selectively operated in either a push or pull resistive mode. The passive and active modes of operation provide adaptability and functionality for both physical fitness and physical rehabilitation regimens. However, due to the physical profile of the base unit hosting the hydraulics system, the adaptability of this device appears limited to upper body, shoulder and arm exercises.  
         [0020]     U.S. Pat. No. 4,363,481 to Erickson discloses an adjustable resistance hydraulic system driven weight lifting device employing a double acting hydraulic cylinder to provide resistive forces in a direction opposite to the direction of the applied exercise forces. This device is designed to be applicable to weight lifting exercise regimens and has little, if any, adaptability to rehabilitative exercise regimens or development of lower body and legs exercise requirements. However, the adjustable resistance hydraulic system has applicability and adaptability to a wide range of physical fitness and rehabilitation exercise devices.  
         [0021]     U.S. Pat. No. 4,448,412 to Brentham discloses an exercising device with a self contained adjustable resistance double acting hydraulic cylinder. While the exercise device, same as others, is limited in its application to a wide variety exercise and rehabilitation exercise routines. However, the self contained adjustable resistance hydraulic cylinder has universal application to a variety exercise and rehabilitation devices.  
         [0022]     U.S. Pat. No. 5,505,281 to Lee, U.S. Pat. No. 4,651,986 to Wang and U.S. Pat. No. 4,291,787 to Berntham disclose self contained remote control adjustable hydraulic cylinders which are particularly adaptable for use with exercise machines.  
         [0023]     Self contained and comprehensive compressor activated hydraulic cylinders are also disclosed throughout the numerous patented exercise devices. Particularly, applications of self contained adjustable resistance are readily disclosed within various patented stepper exercise machines. These hydraulic systems are for the most part fully adaptable to both physical fitness and physical rehabilitation exercise devices.  
       OBJECTS AND SUMMARY OF THE INVENTION  
       [0024]     The principle objective of this invention is to provide a device/platform to apply iterative cycles of predefined and preset measured and controlled stress levels for constant isotonic resistance exercise regimens that involve overloading muscles to build strength for therapeutic as well as physical fitness applications. It is also the objective of this invention to provide a device/platform which is fully adaptable to rehabilitation, health club and home exercise facilities; is adaptable to use by individuals (with proper instruction and training) as well as trained therapy technicians, and which can be manufactured and constructed economically.  
         [0025]     Accordingly, the present invention includes use of two (2) major substructures, the first of which is a main frame hosting either an adjustable resistance hydraulic cylinder or a pneumatic system with appropriate pressure adjustment and readout components, a bearing mounted lever assembly, a platen configured with inscribed degree indexes, radial repositioning ports on a vertical plane, and an adjustable length exercise arm to work against the selected hydraulic or pneumatic components preset resistance levels.  
         [0026]     The second major assembly is comprised of a mechanical, pneumatic or hydraulic vertical adjustment seat mounted on a wheeled platform, with a locking mechanism, and mated to parallel tracks which provide horizontal adjustment/positioning of the seat to accommodate patient/user for various fitness and rehabilitation exercise profiles. A plinth assembly is provided to mate with the seat to provide a horizontal platform for exercises which require the patient/user to be in a supine or prone position.  
         [0027]     A dynamometer, with optional off-the-shelf computer and software programs to record achieved levels of exercise stresses, is provided to measure forces applied during the specified exercise regimens. Further, the dynamometer serves an additional function of validating and calibrating the adjustable pressure (stress) levels of the hydraulic and/or pneumatic cylinders. This is especially critical when considering that the extension or contraction of the exercise arm, alters the dynamics of stresses by increasing or decreasing the length of the exercise arm (lever). However, full extension of the exercise arm still keeps the stress levels within reasonable and realistic target span for physical rehabilitation routines.  
         [0028]     These assemblies comprise the embodiment of the physical rehabilitation and fitness exercise device which provides controlled and measurable resistance forces and range of motion deflections for a broad spectrum of isometric as well as constant, repetitive and progressive isotonic exercise regimens. The preferred embodiment includes options for either a compressor driven hydraulic or pneumatic systems (Refer to  FIG. 1 ) or alternatively as a self contained adjustable resistance hydraulic driven system (Refer to  FIG. 1A ) to provide predefined and preset variable levels of resistance depending on the environment within which the devices will be operated as well as for the purposes for which the devices will be used.  
         [0029]     Pneumatic systems may employ either ganged multiple devices serviced by a large centralized compressor, as applicable to spa environments, or with individual self contained compressor and cylinder configurations as would be applicable to rehabilitation therapy facilities or home exercise environments as depicted in  FIG. 17 .  
         [0030]     Hydraulic systems would be better adapted to individual exercise devices for home and rehabilitation therapy facilities. The hydraulic system may be configured with a compressor and cylinder as depicted in  FIG. 18  or as an off-the-shelf self contained adjustable resistance hydraulic cylinders as disclosed in a number of U.S. patents including U.S. Pat. Nos. 4,651,986, 4,448,412, 4,291,787 and 5,505,281.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0031]      FIG. 1  is an oblique projection of the Physical Rehabilitation and Fitness Exercise Device configured with a self contained variable resistance oil free pneumatic compressor and pneumatic cylinder.  
         [0032]      FIG. 1A  is an oblique projection of the Physical Rehabilitation and Fitness Exercise Device configured with an adjustable resistance hydraulic cylinder.  
         [0033]      FIG. 2  is the top view of the Physical Rehabilitation and Fitness Exercise Device depicting configuration with the self contained pneumatic compressor.  
         [0034]      FIG. 3  is the side view of  FIG. 2 .  
         [0035]      FIG. 4  is the front view of  FIG. 2  with annotation defining both the hydraulic ( 7 ) and pneumatic ( 7 A) cylinders.  
         [0036]      FIG. 5  is a side view of the Physical Rehabilitation and Fitness Exercise Device excluding the chair and track assemblies to depict both the pneumatic and hydraulic configurations.  
         [0037]      FIG. 6  is a side view of the Physical Rehabilitation and Fitness Exercise Device excluding the chair and track assemblies to depict the angular indexes inscribed on the platen surface ( 2 - 21 ) and the index maker ( 2 - 20 ) inscribed on the upper arm of the main frame.  
         [0038]      FIG. 7  is an oblique presentation of the exercise arm ( 3 ), torsion bar ( 2 - 1 ), lever ( 2 - 2 ), and the related subassemblies, which include the exercise arm pad ( 3 - 11 ).  
         [0039]      FIG. 8  is an oblique presentation of the exercise arm ( 3 ) with dynamometer ( 3 - 9 ), and an exploded view of the exercise arm mounting channel ( 3 - 2 ) locking key ( 3 - 4 ) and platen ( 2 - 12 ).  
         [0040]      FIG. 8A  is an exploded view of the platen ( 2 - 12 ) channeled square tubing ( 3 - 2 ) and locking key ( 3 - 4 ) subassembly.  
         [0041]      FIG. 9  is an exploded view of the Physical Rehabilitation and Fitness Exercise Device torsion bar and lever assembly.  
         [0042]      FIG. 10  is a cross section orthographic view of the torsion bar and lever and exercise arm subassemblies.  
         [0043]      FIG. 11  is an oblique exploded view of the Chair and track assemblies.  
         [0044]      FIG. 12  is an oblique exploded view of the Chair Locking mechanism pylon(s).  
         [0045]      FIG. 13  is an oblique exploded view of the seat lock handle assembly.  
         [0046]      FIG. 14  is an oblique view of the Physical Rehabilitation and Fitness Exercise Device with the chair back removed and the plinth ( 9 ) installed.  
         [0047]      FIG. 15  is an oblique exploded view of the plinth assembly.  
         [0048]      FIG. 16  is an oblique exploded view of the plinth leg.  
         [0049]      FIG. 17  is a schematic view of the typical pneumatic cylinder adjustable resistance assembly.  
         [0050]      FIG. 18  is a schematic view of the typical compressor driven hydraulic cylinder adjustable resistance assembly.  
         [0051]      FIGS. 19A through 19C  are graphic presentations of a 5/2 manually operated device control valve.  
         [0052]      FIG. 20A  is a physical profile of a patient/exerciser (amputee) performing hip flexion and extension from a sitting position.  
         [0053]      FIG. 20B  is a physical profile of a patient/exerciser performing elbow flexion and extension from a sitting position.  
         [0054]      FIG. 20C  is a physical profile of a patient/exerciser performing ankle dorsi flexion and plantar flexion from a sitting position.  
         [0055]      FIG. 20D  is a physical profile of a patient/exerciser performing hip abduction from a supine position.  
         [0056]      FIG. 20E  is a physical profile of a patient/exerciser performing shoulder flexion and extension from a prone position.  
     
    
     DETAILED DESCRIPTION  
       [0057]     As depicted in the drawings ( FIG. 1  through  FIG. 18 ) the preferred embodiment of the Physical Rehabilitation and Fitness Exercise Device (hereinafter referred to as the Rehabilitation and Exercise Device), in accordance with this invention, includes the main frame assembly  1 , the seat assembly  4 , tracks  5  and virtual platform  6 . The main frame and seat assemblies are detachably mounted to a solid platform, or flooring, as depicted herein as the virtual platform  6 . Referring to  FIGS. 1 through 4 , the main frame  1  assembly is comprised of three (3) subassemblies; the torsion bar subassembly  2 , the exercise arm subassembly  3  and optionally, either a pneumatic or hydraulic compressor and connectors  8 A and a pneumatic or hydraulic cylinder  7 A, as depicted in  FIG. 1 , or alternatively a self contained adjustable resistance hydraulic cylinder  7 , as depicted in  FIG. 1A  to provide controlled levels of resistance for the Physical Rehabilitation and Exercise Device. Set screws  1 - 1  (2 each) and  1 - 2  (2 each), as shown in  FIG. 2  located on the upper and lower surfaces of the top frame bar, retain the torsion bar bearings which are depicted in  FIG. 10 .  
         [0058]     The optional variable and adjustable resistance components configurations permit adaptation of this device to a variety of environments ranging from the home to physical therapy facilities and to physical fitness spas. The adjustable resistance hydraulic cylinder configuration may be optionally configured as a compressor driven unit as depicted in  FIG. 1  and as schematically defined in  FIG. 18 , or alternatively as a stand alone self contained adjustable resistance hydraulic cylinder of the types as defined in U.S. Pat. No. 4,448,412 to Brentham and U.S. Pat No. 5,505,281 to Lee. This configuration is readily adaptable to home and physical rehabilitation facilities.  
         [0059]     The pneumatic cylinder configuration could be optionally equipped as a stand-alone device or as ganged series of devices. As a stand-alone device the configuration will include an integrated and dedicated compressor (as depicted in  FIG. 1 ). As a ganged device, its&#39; configuration would include a central compressor serving a series of exercise/rehabilitation pneumatic controlled resistance devices. The schematic representation of the pneumatic adjustable resistance pneumatic system is provided in  FIG. 17 .  
         [0060]     Control of both the hydraulic and pneumatic compressor driven systems may be optionally provided by a 5/2 flow control valve as depicted in  FIGS. 19A through 19C  or by dual 2/2 flow control valves.  
         [0061]     Referring to  FIG. 5  the hydraulic cylinder ( 7 ), or the pneumatic cylinder ( 7 A), is detachably affixed to the main frame base cross bar clevis  1 - 3  and secured by a hitch pin  1 - 4 . When the exercise arm  3  is positioned towards the front of the exercise device, the upper end of the cylinder piston arm is mated to the torsion bar lever  2 - 2  and secured to clevis  2 - 2 . 1  with hitch pin  2 - 4  for clockwise (lifting) motion of the exercise arm, or alternately secured with hitch pin  2 - 4  to clevis  2 - 2 . 2  for counter-clockwise (depression) of the exercise arm. When the exercise arm is positioned towards the rear of the exercise device, the cylinder is attached to clevis  2 - 2 . 1  for clockwise (depression) motion of the exercise arm, and alternatively, attached to clevis  2 - 2 . 2  for counter clockwise (lifting) motion of the exercise arm.  
         [0062]     In  FIG. 6  platen  2 - 12  indexes  2 - 21 , inscribed on the platen face, align with index marker  2 - 20  inscribed on the upper bar of the device frame. The indexes are incremented at 5° increments through 90° either side of the 0° index.  
         [0063]     In  FIGS. 7 and 8  exercise arm  3  fits, adjustably, within the exercise arm channel  3 - 2  and is locked in selected position by key  3 - 4  hitch pins  3 - 5  which fit through exercise arm channel ports  3 - 6 , selected exercise arm ports  3 - 7  and into platen ports  2 - 22 . Exercise arm subassembly shaft  3 - 1  is inserted through platen port  2 - 19  and locked in place by E Clip  3 - 3  to secure the exercise arm assembly to platen  2 - 12  (refer to  FIG. 9  for a more detailed view of the platen profile).  
         [0064]     Multiple ports  3 - 7  on exercise arm  3  allow adjusting the exercise arm to accommodate various user physical profiles as well as individual exercise regimens. Inscribed index lines  3 - 8 , define the ports to mate with key  3 - 4  pins  3 - 5  to establish a point of equilibrium for a mechanical advantage of 1—wherein the functional length (from the center point of the torsion bar  2 - 1  to the cross member of the exercise arm) of the exercise arm is equal to the length of the torsion bar lever  2 - 2 .  
         [0065]     Decreasing the functional length of the exercise arm decreases the mechanical advantage (requiring more force to work against the preset resistance). Conversely, increasing the functional length of the exercise arm increases the mechanical advantage (requiring lesser force to work against the preset resistance).  
         [0066]     Force levels required to work against preset pneumatic or hydraulic cylinder resistance forces can be calculated by the simple equation F e ×d e =F r ×d r  wherein the length of the lever (d r ) remains constant and the preset resistance (F r ) is defined. The functional length of the exercise arm (d e ) is measured from the exercise arm channel shaft (fulcrum) to the exercise arm cross bar. The force (F e ) required to work against the preset resistance may be verified by use of the dynamometer. Similarly the dynamometer may be used effectively to calibrate the pneumatic and/or hydraulic cylinder resistance settings.  
         [0067]     Padded sleeve  3 - 11  ( FIG. 7 ), composed of hi density foam rubber encased in a hypoallergenic polyvinyl type material, is detachably affixed to the exercise arm to provide a gripping surface as well as padded protection for leg exercises.  
         [0068]     Dynamometer  3 - 9  ( FIG. 8 ) is detachably affixed to the exercise arm using articulated jig  3 - 10  consisting of clamp screw  3 - 10 . 1  which screws against exercise arm  3  to secure the jig&#39;s upper arm  3 - 10 . 2  to the exercise arm, nut  3 - 10 . 3  which is applied to threaded extension of jig body  3 - 10 . 4  to allow the jig body to be articulated as required to provide perpendicular and/or tangential aligned application of forces during prescribed exercise routines.  
         [0069]     For clarity, the torsion bar subassembly components are depicted in both  FIG. 9  which presents an exploded view of the torsion bar components and  FIG. 10  which provides a cross-sectional view of the assembly. Bearings  1 - 9  and  1 - 10  fit within the Rehabilitation and Exercise Device frame  1  through bored holes  1 - 5  and  1 - 6  and are secured to the frame with four (4) set screws  1 - 1  and  1 - 2  (as defined in discussion on  FIG. 2 ). Bearing  1 - 10  is further secured within the frame by retaining plate  2 - 9  which is attached to the frame with screws  2 - 10  threaded through frame holes  1 - 13 .  
         [0070]     Torsion bar  2 - 1  fits through bearing  1 - 9  and the rear upper arm frame hole  1 - 14 . Lever  2 - 2  hole  2 - 3  fits over the torsion bar and is secured in place by threaded pin  2 - 4  through lever hole  2 - 5  into torsion bar hole  2 - 6  and screwed into lever threaded hole  2 - 7 . The torsion bar then fits through the retaining plate  2 - 9 , front bearing  1 - 10  and abutted against frame wall at point  1 - 7 .  
         [0071]     End cap  2 - 8  is secured to the device frame by screws  2 - 10  threaded through end cap and frame holes  2 - 11   
         [0072]     As defined in discussion of  FIG. 8  and  FIG. 8A  above, the exercise arm  3 , channel  3 - 2  and key  3 - 4  assembly and shaft  3 - 1  fits through platen bored hole  2 - 19  and is secured within the platen by E Clip  3 - 3 .  
         [0073]     Platen  2 - 12  hollowed shaft fits within the torsion bar bored hole  2 - 13  and is secured within the torsion bar with set screws  2 - 14  threaded through torsion bar ports  2 - 15  and platen ports  2 - 16 .  
         [0074]     Pin  2 - 17  fits through the upper arm of the frame hole  1 - 8  and platen port  2 - 18  to lock the platen and exercise arm assembly in place for isometric exercise regimens.  
         [0075]     Holes  2 - 2 . 4  and  2 - 2 . 5  drilled through lever clevis  2 - 2 . 1  and clevis  2 - 2 . 2 , respectively, accept pneumatic/hydraulic cylinder arm securing hitch pins  2 - 2 . 3 .  
         [0076]      FIGS. 11, 12  and  13  depict the adjustable seat assembly  4  and tracks  5 . Seat Back assembly  4 - 2  consists of arm assemblies  4 - 1  permanently attached to ‘L’ shaped seat back supports  4 - 3 . The arm assemblies and ‘L’ shaped supports are secured to seat back by bolts (or other type of adequate fasteners)  4 - 4 . The ‘L’ shaped back supports fit into parallel channels  4 - 5  affixed to the base of the seat cushion  4 - 6  and are detachably secured to the seat cushion channels with keys hitch pins  4 - 7 . Standard off-the-shelf pneumatic seat adjustment hardware and activation lever  4 - 8  are mounted to a chair base  4 - 9 . This subassembly is permanently affixed to platform  4 - 10 .  
         [0077]     Four (4) wheels  4 - 11  fit within the parallel tracks&#39; channels  5 . 1  to align with the platform ports  4 - 13 . Axles  4 - 12  are passed through wheels  4 - 11 , platform ports  4 - 13  and track slots  5 - 2  and are secured with E-Clips  4 - 14 .  
         [0078]     Seat lock assembly pylons  4 - 16  are permanently affixed to platform  4 - 10  to align the pylon locking pin  4 - 16 . 3  with platform ports  4 - 17 . The locking pins fit through coil springs  4 - 16 . 4  and the pylons&#39; counter-bored holes  4 - 16 . 5 . Pylon cams  4 - 16 . 2  positioned over the locking pins are detachably affixed to the pylon by the locking assembly activating rod  4 - 19  and secured to the activating rod by pin  4 - 16 . 1 . The locking assembly handle  4 - 18  is detachably affixed to the activating rod by pin  4 - 21 . E-Clip  4 - 15  detachably secures the activation rod to the pylon assembly. When the handle is turned clockwise, the pylon cams press the locking pins downward through the selected track ports  5 - 3 . When the handle is rotated counterclockwise the pylon cams release pressure on the locking pins and the coil springs force the locking pins upward unlocking the seat assembly.  
         [0079]     Removing seat back assembly  4 - 2  and ‘L’ shaped back supports  4 - 3  from the seat assembly allows installation of the plinth assembly  9 , as depicted in  FIG. 14 , to reconfigure the Physical Rehabilitation and Exercise Devise for exercise regimens which require the user to be in the supine or prone position. The plinth assembly  9  may be installed from either end of the seat base  4 - 6  depending on the specified rehabilitation or exercise regimen. The seat base  4 - 6  may also be rotated 90° to position the patient/exerciser perpendicular to the exercise device for lateral motion of arm and shoulder exercises.  
         [0080]     Referring to  FIGS. 14, 15  and  16 , plinth frame extensions  9 - 2  fit within the seat&#39;s parallel channels  4 - 5  and secured with keys hitch pins  4 - 7 . The plinth pad  9 - 1 , composed of a firm base board and hi density foam rubber encased in a hypoallergenic polyvinyl type material, is detachably affixed to the plinth frame  9 - 3  with bolts (or other type suitable fasteners)  9 - 4 .  
         [0081]     Two (2) plinth adjustable legs  9 . 6  are connected to the plinth frame at clevis  9 - 5  and secured with pins  9 - 7  through adjustable legs&#39; ports  9 - 6 . 1  and clevis ports  9 - 5 . 1 . Rod  9 - 12  passes through adjustable legs&#39; ports  9 - 13  and locking rings  9 - 14 . Pins  9 - 15  secure the locking rings to rod  9 - 12  to maintain parallel separation of the plinth adjustable legs.  
         [0082]     Rod  9 - 9  fits through frame ports  9 - 10  and is the anchor for support hinges  9 - 8 . The support hinges and rod are secured to the plinth frame with E-Clips  9 - 11 . The opposite end of the support hinges, which allow the plinth adjustable legs to be collapsed for storage, are anchored on rod  9 - 12  and secured to the rod with E-Clips  9 - 16 .  
         [0083]     Referring to  FIG. 16  each plinth adjustable leg cylindrical body  9 - 6 . 2  has its base end threaded to accommodate the threaded locking rings  9 - 6 . 3  and threaded leg bases  9 - 6 . 4 . Each threaded leg base is screwed upwards or downwards to level the plinth pad and the locking ring is screwed downward against the leg base to lock the leg base in place.  
         [0084]     Application of this rehabilitation and exercise device to both the physical therapy and physical fitness provide both flexor and extensor exercise profiles as depicted in, but not limited to, the profiles in the following figures.  
         [0085]      FIG. 20A  depicts hip flexion with the resistance cylinder rod connected to the right lever clevis and the patient/exerciser moving the exercise lever in a clockwise direction. Hip extension is achieved by reconnecting the resistance cylinder rod to the left lever clevis and the patient/exerciser moving the exercise lever in a counterclockwise direction.  
         [0086]      FIG. 20B  depicts elbow flexion with the resistance cylinder rod connected to the right lever clevis and the patient/exerciser moving the exercise lever in a clockwise direction. Elbow extension is achieved by repositioning the exercise arm to a higher angle on the platen, reconnecting the resistance cylinder rod to the left lever clevis and moving the exercise arm in a counterclockwise direction.  
         [0087]      FIG. 20C  depicts ankle dorsi flexion with the resistance cylinder rod connected to the right lever clevis and the patient/exerciser moving the exercise arm in a clockwise direction. Plantar flexion is achieved by repositioning the exercise arm to a higher angle on the platen, reconnecting the resistance cylinder rod to the left lever clevis and moving the exercise arm in a counterclockwise direction.  
         [0088]      FIG. 20D  depicts hip flexion, in a supine position, with the resistance cylinder connected to the right lever clevis and rotating the exercise arm in a clockwise direction. Hip extension, in the supine position, is achieved by repositioning the exercise arm to a higher angle on the platen, reconnecting the resistance cylinder rod to the left lever clevis and moving the exercise arm in a counterclockwise direction.  
         [0089]      FIG. 20E  depicts shoulder flexion with the resistance cylinder connected to the right lever clevis and rotating the exercise arm in a clockwise direction. Shoulder extension is achieved by repositioning the resistance cylinder rod to the left lever clevis and moving the exercise arm in a counterclockwise direction.