Abstract:
An exercise apparatus includes a disk rotatable in first and second directions against a frictional force and a device disposed between a cable and the disk. The device is responsive to tensioning and movement of the cable in the first direction for coupling the cable to the disk whereupon the disk rotates against the frictional force with movement of the cable in the first direction. The device is also responsive to release of the tension in the cable in the first direction for uncoupling the cable from the disk. A rewind arm coupled between the disk and the device is also responsive to the release of the tension in the cable in the first direction for tensioning and moving the cable and the device in the second direction.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of U.S. patent application Ser. No. 12/798,694, filed Apr. 9, 2010, which claims the benefit of U.S. provisional patent application No. 61/217,775, filed on Jun. 4, 2009, both of which are incorporated herein by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    There has been a wide variety of different types of resistance exercise equipment developed in the past, for both the professional and consumer markets. These resistance exercise machines have incorporated weights, deformable resistance elements, or friction mechanisms to provide a resistive force. Resistive exercise machines that use weights, tend to be cumbersome and are potentially dangerous to use. Resistance exercise machines that use deformable elements like metal springs, elastic rubber or bow rods, are unnatural and difficult to exercise with, in that, the amount of the tension being applied progressively increases through the positive or forward motion of the exercise. This built up tension exerts a forceful pull back reaction at the beginning of the negative or backward motion of the exercise, which tends to be stressful and unhealthy for your muscles. Resistance exercise machines that use friction mechanisms, usually aren&#39;t very versatile in that, they&#39;re limited to the amount of different types of exercises they can provide. 
         [0003]    There&#39;s a need for a versatile motion simulator resistance exercise machine. Which, can safely apply a uniform resistive force to only the forward motion of most bodily exercises, motions or actions. For instance, the forward motion of: a pitching or throwing motion; a punching motion; a backhand in tennis motion; a kicking motion; an arm curl motion; and hundreds of other bodily, therapeutic, or sports like exercises, motions or actions. Which, would make it an extremely efficient and user friendly exercise machine the whole family could use, and an important tool for the sports, physical fitness, and medical industries. 
         [0004]    Typically, most of the resistance exercise equipment that&#39;s available today, apply a resistive force in only one direction throughout the full range of motion. There&#39;s a need for a resistance exercise machine that can apply a resistive force in only one direction coming from two separate sources, alternately. So the user can perform complex two-way or push-then-pull exercises, which are more aerobic and efficient for the avid user. 
         [0005]    There&#39;s only a few resistance exercise machines available, where the user can exercise their arms or legs in a circular motion. They only provide a few positions in which to exercise in and they&#39;re usually on a vertical plane. There&#39;s a need for a resistance exercise machine that will enable the user to exercise their arms or legs in a circular motion at any angle in relation to the user. 
         [0006]    It&#39;s known that personnel stationed in a low gravitational environment as on a space station, tend to lose muscle mass and bone density quickly because of the absence of gravity opposing their movements, and the lack of proper resistance exercise equipment needed to help reduce this loss. There&#39;s a need for innovative resistance exercise equipment which can effectively work in a low gravitational environment and safely apply a resistive force to virtually any bodily motion or action. Enabling the user to exercise the essential therapeutic exercises necessary to help counteract muscular atrophy and the loss of bone density. The frame can be designed to fold away into the fuselage of a spacecraft, or the wall, floor or ceiling of a moon or Mars base. 
       SUMMARY OF THE INVENTION 
       [0007]    The present resistance exercise machine can apply a frictional resistive force to any one of three different exercise methods or techniques. They include, the motion simulation technique, the push-then-pull technique, and the full range or circular motion technique. 
         [0008]    The motion simulation technique, requires using a detachable accessory like a hand grip or ankle strap, which can be attached to the free end of a flexible accessory cable. Depending on the type of exercise being performed, the accessory cable can be routed through one, or through a variety of different pulleys, to then rest in a channel situated on the periphery of the resistance disk assembly. Lastly, the tail end of the accessory cable is attached to a pawl, mounted to pivot on the outermost end of the rewind arm assembly. 
         [0009]    To perform a motion simulation exercise, the user can pull against an accessory cable using an accessory. Which, urges the pawl mechanism of the rewind arm assembly, to pivot inward and engage a complementary shaped gear situated on the periphery of the resistance disk assembly. This forces both, the resistance disk assembly and the newly engaged rewind arm assembly to rotate in unison about a mounted non-rotative spindle as the user pulls against the accessory cable. When the user stops pulling against the accessory cable, the resistance disk assembly immediately stops rotating. Then the spring loaded pawl pivots outward and disengages the gear on the periphery of the resistance disk assembly. Instantaneously, the rewind arm assembly starts to rewind back around the stopped resistance disk assembly by means of a coil spring. Which pulls the accessory cable that has been unwound from the channel, back into the channel situated on the periphery of the resistance disk assembly, in preparation for another pull. Exercising with the motion simulation technique, can strengthen the specific muscles or muscle groups used to perform a particular sports, therapeutic or exercise motion or action safely. Without the pulling back reaction one encounters during the backward motion of an exercise, which is common with most other resistance exercise equipment. 
         [0010]    The push-then-pull technique, basically works in the same manner as the motion simulation technique, except the push-then-pull technique requires using two separate resistance disk assemblies alternately, which are controlled by just one accessory. For example, resistance disk assembly # 1  applies a resistive force during the pushing motion, as the accessory cable of resistance disk assembly # 2  is being pulled back into a channel situated on it&#39;s periphery by the rewind arm assembly through the duration of the pushing motion. Then, as the user starts the pulling motion, resistance disk assembly # 2  applies the resistive force, as the accessory cable of resistance disk assembly # 1  is being pulled back into a channel situated on it&#39;s periphery by it&#39;s rewind arm assembly. 
         [0011]    The circular motion technique, requires rotating an exercise resistance disk using any one of a variety of detachable accessories, like a handle grip or foot pedal. The exercise resistance disk is mounted to a universal frame assembly that&#39;s also height adjustable. Enabling the user to exercise in a circular motion at any angle in relation to the user. The exercise resistance disks can be rotated in a clockwise or counterclockwise direction while the user is either standing, sitting or lying down. Exercising in a circular motion, automatically coordinates many smaller one directional exercises into a complex multi-directional exercise. Which, strengthens many muscles or muscle groups at the same time. 
         [0012]    The motion simulation, push-then-pull, and circular motion techniques all utilize the same type of frictional resistance. Which is created from tension produced at the center portion of the resistance disk assembly, or the exercise resistance disk by means of a pressure plate and brake disk arrangement. In operation, the pressure plates mounted to the rotating disk are in frictional contact with the non-rotative brake disks, causing drag. The tensional pressure between the pressure plates and brake disks can be varied by turning a threaded tension knob. 
         [0013]    More specifically, the invention is an exercise apparatus comprising: a resistance disk including an aperture for receiving a non-rotative spindle therethrough for rotation of the resistance disk on the non-rotative spindle; and a pair of brake disk pads mounted on opposite sides of the resistance disk and coupled to the spindle for non-rotation therewith when the spindle is received in the resistance disk aperture such that the pair of brake disk pads frictionally oppose rotation of the resistance disk on the spindle. 
         [0014]    A pair of pressure plates can be fixedly mounted on opposite sides of the resistance disk between the pair of brake disk pads. A bushing can be fixedly mounted in the resistance disk aperture for rotation of the bushing and the resistance disk about the non-rotative spindle disposed in an aperture of the bushing. The pair of brake disk pads can be mounted between a pair of brake disks coupled to the brake disk pads and to the spindle when the spindle is received in the resistance disk aperture. 
         [0015]    A tension assembly can be coupled between the spindle and the resistance disk and operative for increasing or decreasing a frictional force applied by the brake disk pads to the resistance disk. The tension assembly can include a spring mounted between the spindle and the resistance disk, and a knob for adjusting the frictional force that the spring causes the brake disk pads to apply to the resistance disk. A handle can be coupled to the resistance disk. Means can be provided for adjusting a position of the handle on the resistance disk. 
         [0016]    A cable can be coupled to a device which is responsive to tension applied to the cable for coupling the cable to the resistance disk, whereupon movement of the tensioned cable causes the resistance disk to move in a first direction, wherein the device is further responsive to no tension applied to the cable for either uncoupling the cable from the resistance disk or maintaining the cable uncoupled from the resistance disk. The device can be a toothed pawl that is pivotable against a spring force in response to the tension applied to the cable for meshing with a toothed gear of the resistance disk. 
         [0017]    A rewind arm can be coupled between the spindle and the device. The rewind arm can be responsive to movement of the tensioned cable for movement of the rewind arm in the first direction against a spring bias between the rewind arm and the spindle. The rewind arm can further be responsive to the spring bias after release of the tension applied to the cable after said movement for moving the rewind arm in a second direction opposite the first direction. 
         [0018]    In operation, the device and the resistance disk move in the first direction with the rewind arm in response to movement of the tensioned cable, and the device moves in the second direction with the rewind arm while the resistance disk remains stationary in response to release of the tension applied to the cable after said movement. 
         [0019]    The spindle can be mounted to a stationary or movable object. 
         [0020]    The exercise apparatus can further include a universal frame assembly coupled between the resistance disk and a stationary or moveable object. The universal frame assembly defines at least two independent rotational axes for the resistance disk with respect to an axis of the object. 
         [0021]    The universal frame assembly can include: a T-arm including a first section and a second, transverse section, wherein the first section of the T-arm is rotatable about the axis of the object, and the second section of the T-arm is rotatable about an axis of the first section of the T-arm during rotation of the first section of the T-arm about the axis of the object; an elbow having a first end and a second end that faces in a direction transverse to the first end, wherein the first end of the elbow is coupled for rotation with the second section of the T-arm; and a sleeve having first and second ends, the first end of the sleeve coupled for rotation with the second end of the elbow, wherein the non-rotative spindle is coupled to the second end of the sleeve. 
         [0022]    The invention is also a method of exercising comprising: (a) frictionally opposing rotation of a disk in response to movement of a cable tensioned in a first direction; (b) following step (a), causing the tension on the cable to be reversed to a second, opposite direction from the first direction; and (c) following step (b), while the disk remains stationary, causing the cable tensioned in the second direction to move in the second direction. 
         [0023]    The method can further include: (d) frictionally opposing rotation of the disk in response to movement of the cable tensioned in the first direction; (e) following step (d), causing the tension on the cable to be reversed to a second, opposite direction from the first direction; and (f) following step (e), while the disk remains stationary, causing the cable tensioned in the second direction to move in the second direction. 
         [0024]    The method can include repeating steps (d)-(f). 
         [0025]    Lastly, the invention is an exercise apparatus comprising: a disk rotatable in a first direction against a frictional force; a device disposed between a cable and the disk, said device responsive to tensioning and movement of the cable in the first direction for coupling the cable to the disk whereupon the disk rotates against the frictional force with movement of the cable in the first direction, said device further responsive to release of the tension in the cable in the first direction for uncoupling the cable from the disk; and a rewind arm coupled between the disk and the device and responsive to the release of the tension in the cable in the first direction for tensioning and moving the cable in a second direction. 
         [0026]    The disk can include a toothed gear and the device can comprise a toothed pawl that engages the toothed gear in response to tensioning of the cable in the first direction and which disengages the toothed gear in response to tensioning of the cable in the second direction. 
         [0027]    The rewind arm can be biased against movement of the cable in the first direction and biased to move the cable in the second direction. 
         [0028]    The disk can have a non-circular shape. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]      FIG. 1  is a side view of the exercise machine, and a person performing an exercise by pulling against an accessory cable. 
           [0030]      FIG. 2  is an exploded perspective view of a resistance disk assembly. 
           [0031]      FIG. 3  is a perspective view of an exercise resistance disk and a mounted handle grip accessory. 
           [0032]      FIG. 4  is an exploded perspective view of the tension assembly and a perspective view of the resistance disk assembly. 
           [0033]      FIG. 5  is a side view of the outer portion of both, the resistance disk assembly and the rewind arm assembly. 
           [0034]      FIG. 6  is a top view of the outer portion of the transparent resistance disk assembly and the rewind arm assembly shown in  FIG. 5 , and the attached accessory cable. 
           [0035]      FIG. 7  is a top view of the pawl mechanism of the rewind arm assembly engaged to a gear situated on the periphery of the transparent resistance disk assembly. 
           [0036]      FIG. 8  is a perspective view of the resistance disk assembly and the tension assembly, and an exploded perspective view of the inner portion of the rewind arm assembly. 
           [0037]      FIG. 9  is a side view of the exercise machine, to show the rewind arm assembly has engaged the periphery of the resistance disk assembly by the pull of the accessory cable, as depicted in  FIG. 7 . 
           [0038]      FIG. 10  is a cross section view of the tension assembly, the resistance disk assembly, and the inner portion of the rewind arm assembly fully assembled. 
           [0039]      FIG. 11  is a top view of an extension channel and an extension arm that&#39;s attached by a curved handle grip accessory, which is used to rotate the exercise resistance disk. 
           [0040]      FIG. 12  is a side view of the extension channel and paired extension arm, mounted to the exercise resistance disk shown in  FIG. 11 , and a side view of the detached curved handle grip accessory. 
           [0041]      FIG. 13  is a cross section view of the tension assembly, the center section of the exercise resistance disk, and the outermost ends of the T-arm sleeve and elbow frame sections. 
           [0042]      FIG. 14  is a top view of the elevation bar, and the T-arm, elbow, and T-arm sleeve frame sections of the universal frame assembly, also shows the exercise resistance disk mounted to the T-arm sleeve. 
           [0043]      FIG. 15  is a front view of the exercise machine. 
           [0044]      FIG. 16  is a side view of the exercise machine. 
           [0045]      FIG. 17  is a top view of the exercise machine. 
           [0046]      FIG. 18  is a top view of a modified version of the exercise resistance disk. 
           [0047]      FIG. 19  is a side view of a detachable curved handle grip accessory. 
           [0048]      FIG. 20  is a side view of a detachable swinging hand grip accessory. 
           [0049]      FIG. 21  is a top view of a bat simulator accessory and an attached accessory cable. 
           [0050]      FIG. 22  is a side view of a racket simulator accessory and an attached accessory cable. 
           [0051]      FIG. 23  is a side view of a golf club simulator accessory and an attached accessory cable. 
           [0052]      FIG. 24  is a side view of a two-way bar accessory, attached by a cable adapter and accessory cable on the top side, and an accessory cable on the bottom side. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0053]      FIG. 1  shows a side view of the invention  01  (hereafter referred to as exercise machine  01 ). A person  02  (hereafter referred to as user  02 ), can stand on the platform  03  and hold onto a detachable accessory like a hand grip  04  for example, to perform an exercise. The detachable accessory  04  can be attached to an eye loop connector  05 , situated at the free end of a flexible steel cable, cord, strap, or the like (hereafter referred to as accessory cable  06 ). In the particular set-up shown, the accessory cable  06  is routed through a suspended pivot pulley  07 , a non-pivotal pulley  08 , and lastly a non-pivotal primary pulley  09 , which is always aligned with the cable channel  10  situated on the periphery of the resistance disk  11  (see  FIG. 5 ). A cable stop  12  is situated on each accessory cable  06 , and sets the length of extended accessory cable  06  the user  02  desires to exercise with, by sliding it  12  along the accessory cable  06  to lengthen or shorten it  06 . The user  02 , is shown performing a lat exercise by pulling the hand grip accessory  04  and the attached accessory cable  06  in the advanced direction from above the user&#39;s  02  head, down to the user&#39;s  02  mid thigh. 
         [0054]      FIG. 2  shows an exploded perspective view of the resistance disk assembly  13 , used to motion simulate various bodily, sports like, or therapeutic actions, motions or exercises. It is understood, that an accessory cable  06  can either rest in, be unwound from, or can be slid back into the cable channel  10  situated around the periphery of the resistance disk  11  (see  FIG. 5 ). It is understood, that a gear  14  is situated around the periphery of the resistance disk  11 . An oil impregnated coaxial brass bushing  15 , ball bearings or the like, is coaxially mounted in a complementary sized hole  16  at the center of the resistance disk  11  for the smooth rotation of the resistance disk assembly  13  about a non-rotative spindle  23 . A flat, metal or the like, disk shaped pressure plate  17 A is coaxially mounted to the top side of the resistance disk  11 , and a flat, metal or the like, disk shaped pressure plate  17 B is coaxially mounted to the bottom side of the resistance disk  11  using flat head screws  18  or the like. The resistance disk  11 , the cable channel  10 , and the gear  14  can all be of the same embodiment. For example, made from injection molded plastic, cast aluminum, cast iron, cast steel, composites, epoxy, fiberglass, polycarbonate, graphite or other materials like wood, particle board and can be made in different size diameters, depending on the model or application. 
         [0055]      FIG. 3  shows a perspective view of an exercise resistance disk  19 , used to perform circular motion or full range exercises. An oil impregnated coaxial brass bushing  15 , ball bearings or the like, is coaxially mounted in a complementary sized hole  16  at the center of the exercise resistance disk  19  for it&#39;s  19  smooth rotation. A flat, metal or the like, disk shaped pressure plate  17 A is coaxially mounted to the top side of exercise resistance disk, and a flat, metal or the like, disk shaped pressure plate  17 B is understood to be coaxially mounted to the bottom side of the exercise resistance disk  19  using flat head screws  18  or the like. The exercise resistance disk  19  can be made from the same materials as the resistance disk  11  (described in  FIG. 2 ). An accessory extension channel  71  (hereafter referred to as extension channel  71 ), is shown mounted to the top face of the exercise resistance disk  19 . A detachable curved handle grip accessory  129 , is one example of several different kinds of detachable accessories which can be used to rotate the exercise resistance disk  19  in a clockwise or counterclockwise direction about a non-rotative spindle  90 . An extension channel  71  can also be mounted to the top face of the resistance disk assembly  13 , making it a two-in-one or combination resistance disk. Which, enables the user  02  to motion simulate various bodily, sports like, or therapeutic actions, motions or exercises, or perform circular motion or full range exercises. 
         [0056]      FIG. 4  shows an exploded perspective view of the tension assembly  22 , and a perspective view of the resistance disk assembly  13 . It is understood, that frictional resistance is produced in the same manner for both, the resistance disk assembly  13  and the exercise resistance disk  19 . However, is illustrated using only the resistance disk assembly  13 . Frictional resistance is produced by the tension assembly  22 , and pressure plates  17 A and  17 B mounted on either side of the resistance disk assembly  13 , or the exercise resistance disk  19 . The upper brake disk assembly  24 , consists of a non-rotative upper brake disk  24 A and paired brake disk pad  24 B. The lower brake disk assembly  25 , consists of a non-rotative lower brake disk  25 A and paired brake disk pad  25 B. The brake disk pads  24 B and  25 B can be adhered to the brake disks  24 A and  25 A using an adhesive or the like, or they can be made to be non-rotative, in the same manner as the non-rotative brake disks  24 A and  25 A for easy removal and replacement if the brake disk pads wear out. It is understood, that if the manufacturer makes the pressure plates  17 A and  17 B and brake disks  24 A and  25 A from certain compatible metals recommended for use in frictional conditions, the brake disk pads  24 B and  25 B may not be used. In operation, the user  02  forces the resistance disk assembly  13  or the exercise resistance disk  19  to rotate, as pressure plate  17 A is in frictional contact with brake disk pad  24 B of brake disk assembly  24  or brake disk  24 A, and pressure plate  17 B is in frictional contact with brake disk pad  25 B of brake disk assembly  25  or brake disk  25 A. The action of the brake disk assemblies  24  and  25 , or brake disks  24 A and  25 A, pressing against pressure plates  17 A and  17 B mounted on either side of the rotating resistance disk assembly  13  or the rotating exercise resistance disk  19  creates frictional drag, thus a resistive force retarding the rotation of the resistance disk assembly  13 , or the exercise resistance disk  19 . This resistive force is constant, and can be adjusted by turning the tension knob  27  about a non-rotative threaded spindle  23  (refer to  FIG. 10 ), or non-rotative threaded spindle  90  (refer to  FIG. 13 ). Turning the tension knob  27  clockwise, increases the pressure between the tension knob  27  and the compression spring  28 . Which, compresses the compression spring  28  against the top brake disk  24 A. Thus, increasing the tension between brake disk assembly  24  and pressure plate  17 A, and between brake disk assembly  25  and pressure plate  17 B (refer to  FIG. 10  or  13 ). A dial  29 , situated on top of the tension knob  27 , and a pointer  30  situated on top of the pointer  30  body coaxially aligned through a hole in the center of the tension knob  27  body and also coaxially mounted on the top end of the non-rotative spindle  23  or non-rotative spindle  90 . Indicates the tension setting set against the rotation of the resistance disk assembly  13  or the exercise resistance disk  19  (refer to  FIG. 10  or  13 ). A lubricated washer  31 , coaxially mounted on the underside of the tension knob  27 , helps ease in turning the tension knob  27 , and keeps the compression spring  28  evenly centered on the brake disk  24 A. The metal E-clip  32 A which sits in groove  33 A, and metal E-clip  32 B which sits in groove  33 B around the non-rotative spindle  23  or non-rotative spindle  90 , holds one half of a hardened steel key  34  or the like, in a key way  35 . While, the other half of the steel key  34  sits in a notch  36  situated on one side of the center hole in the upper brake disk  24 A, preventing it  24 A from rotating about the non-rotative spindle  23  or the non-rotative spindle  90 . The lower brake disk  25 A, is thicker than the upper brake disk  24 A for added strength, and is coaxially mounted atop a shelf  37  on the non-rotative spindle body  23  or the non-rotative spindle body  90 . The metal E-clip  32 C which sits in groove  33 C, is situated lower on the non-rotative spindle body  23  or the non-rotative spindle body  90 , and holds one half of a hardened steel key  39  or the like, in a key way  40 . While, the other half of the steel key  39  sits in a notch  41  situated on one side of the center hole in the lower brake disk  25 A, preventing it  25 A from rotating about the non-rotative spindle  23  or the non-rotative spindle  90 . It is understood, that both the resistance disk assembly  13  and the exercise resistance disk  19 , use the same tension assembly  22  configuration in the same manner to create frictional resistance. 
         [0057]      FIG. 5  shows a side view of the outer section of both, the resistance disk assembly  13  and the rewind arm assembly  42 . An eye loop cable connector  43  or the like, at the tail end of an accessory cable  06 , is connected to a pawl  44  body by means of a securely fastened shoulder screw cable connector  45 , or the like. The accessory cable  06  is shown at rest in a cable channel  10 , that is understood to extend around the periphery of the resistance disk  11 . A shoulder screw  46  or the like, is understood to be aligned through a curved slot  48  in the pawl  44  body (see  FIG. 6 ), and securely fastened to the rewind arm  47 . Washers  49 , coaxially situated on shoulder screws  46 , and  53  are used as spacers to support and hold the pawl  44  body loosely in position. An L-bracket  50  or the like, can be fastened to the rewind arm  47  using small screws, rivets or the like, or the L-bracket  50  can be molded as part of the same rewind arm  47  embodiment. A small compression spring  51 , rests against the pawl  44  body and is understood to be secured to the L-bracket  50  using a screw fastener or the like. The compression spring  51  is fully extended and the pawl  44  is at rest, when the accessory cable  06  is at rest and not pulled against by the user  02 . 
         [0058]      FIG. 6  shows a top view of the outer section of both, the resistance disk assembly  13  and the rewind arm assembly  42  shown in  FIG. 5 . Shows the resistance disk  11 , is made of a transparent see through material to better show the hard to see gear  14 , and the hard to see inside wall  52  of the cable channel  10  where the accessory cable  06  rests against. Shows the eye loop cable connector  43 , at the tail end of the accessory cable  06  is connected to the toothed pawl  44  by means of the shoulder screw cable connector  45 . The pawl  44 , is mounted to pivot about a shoulder screw  53  or the like, which is securely fastened to the rewind arm  47 . The securely fastened shoulder screw  46  limits the outward pivoting motion of the pawl  44 , and is aligned in a curved slot  48  in the pawl  44  body. The arc of the curved slot  48  is relative to the axis point of shoulder screw  53 . The pawl  44 , is understood to be resting against the shoulder of shoulder screw  46  by the expanding force of the small compression spring  51 . 
         [0059]      FIG. 7  shows a top view of the outer section of both, the resistance disk assembly  13  and the rewind assembly  42  shown in  FIG. 6 . Shows the resistance disk  11 , is made of a transparent see through material to better show how the hard to see toothed pawl  44  has engaged the gear  14  situated on the periphery of the resistance disk assembly  13 . In operation, the user  02  starts pulling against the accessory cable  06  in the advanced direction. By this action, slack in the accessory cable  06  tightens up as the eye loop cable connector  43  pulls against the shoulder screw cable connector  45 . Which, urges the pawl  44  to pivot about shoulder screw  53  in an inwardly direction towards the gear  14  on the periphery of the resistance disk assembly  13 . Simultaneously, the curved slot  48  in the pawl  44  body pulls away from resting against shoulder screw  46 , and the pawl  44  body depresses the small compression spring  51  against the L-bracket  50  as the teeth  54  of the pawl  44  body come to fully engage a complementary toothed gear  14  on the periphery of the resistance disk assembly  13 . Thereby, joining the rewind arm  47  of the rewind arm assembly  42  to the periphery of the resistance disk assembly  13 . At this point, the resistance disk assembly  13  and joined rewind arm  47  start to rotate in unison about a mounted non-rotative spindle  23  as the user  02  pulls against the accessory cable  06  in the advanced direction and against an applied frictional resistive force (refer to description of the invention in  FIG. 4 ). It is understood, that a frictional resistive force is being applied against the pull of the accessory cable  06  in the advanced direction only, and not in the retracting direction as the user  02  returns to the original position to repeat another repetition during an exercise routine. 
         [0060]      FIG. 8  shows a perspective view of the resistance disk assembly  13  and the tension assembly  22 , and an exploded perspective view of the inner section of the rewind arm assembly  42 . It is understood, that an oil impregnated coaxial brass bushing  55 , ball bearing or the like, is coaxially mounted in a complementary shaped hole  56  towards the innermost part of the rewind arm  47 , and is coaxially mounted on a spindle  23 . The rewind arm assembly  42  is held in location on the spindle  23  by means of a metal E-clip  57 A mounted in a groove  58 A above the rewind arm  47 , and a metal E-clip  57 B mounted in a groove  58 B below the rewind arm  47 , along with washers  59  used as spacers between the E-clips  57 A and  57 B and the rewind arm  47  (refer to  FIG. 10 ). A coil spring  60  is disposed concentrically around the spindle  23 . The inner end of the coil spring  60  is mounted to an L-bracket  61  or the like, using pop-rivets  62  or the like. The L-bracket  61  is mounted to the underside of both, the disk shaped coil spring housing cover  63  and the rewind arm  47  using flat head screws  64  or the like. The rewind arm  47 , the coil spring housing cover  63 , and the L-bracket  61  could all be of the same embodiment, made from cast aluminum, injection molded plastic or the like. The outer end of the coil spring  60  is mounted to the coil spring housing  65  using pop-rivets  62  or the like. The bottom end of the spindle  23  is threaded, and can be secured to a mounting hole  66  in a mounting bracket  67  mounted inside a resistance disk encasement  68  (refer to  FIG. 9 ), inside a platform  03 , or to any frame, frame section or mounting bracket with a mounting hole, by using a lock nut  69  or the like. 
         [0061]      FIG. 9  shows a side view of the exercise machine  01  and the user  02  exercising. The side panel of a resistance disk encasement  68  has been partially removed to show the exercise machine  01  in operation. As the resistance disk assembly  13  and joined rewind arm  47  start to rotate in unison about a mounted non-rotative spindle  23  by the user  02  pulling against the accessory cable  06  in the advanced direction, as mentioned earlier (in  FIG. 7 ). Simultaneously, the accessory cable  06  is starting to be unwound from the cable channel  10  situated on the periphery of the rotating resistance disk assembly  13 , and a cable stop  12  situated towards the free end of the accessory cable  06  is being lifted away from resting against the particular pulley it&#39;s  06  routed through. It is understood, that the coil spring  60 , already preloaded with a small amount of tension, is being wound tighter and increases with more and more tension the further the resistance disk assembly  13  and joined rewind arm  47  are being rotated in the advance direction by the pull of the accessory cable  06 . The amount of increased tension in the coil spring  60  being applied against the pull of the accessory cable  06  is nominal The user  02 , can pull and unwind the accessory cable  06  from the cable channel  10  to any length between one and sixty-five inches if using a disk measuring about twenty-one inches in diameter. The diameter of the resistance disk assembly  13  and the cable channel  10  determines the length of cable  06  that can be extended. However, a longer length of accessory cable  06  can be used if the cable channel  10  is made wide enough to hold more adjoining windings of accessory cable  06 . When the accessory cable  06  reaches the limit to which it can be pulled, or upon the user  02  stopping the pull against the accessory cable  06 , the resistance disk assembly  13  immediately stops rotating. By this action, the pawl  44  disengages the gear  14  on the periphery of the resistance disk assembly  13  by the small amount of slack that&#39;s now in the accessory cable  06 , and by the deformed compression spring  51  expanding outward. Thus, urging the pawl  44  body to pivot away from the gear  14  on the periphery of the resistance disk assembly  13 . Simultaneously, the tension that has built up in the coil spring  60  from the rotation of the resistance disk assembly  13  and joined rewind arm  47  pulled in the advanced direction, forces the rewind arm  47  and attached accessory cable  06  to rewind back in the opposite direction. Thereby, retracting or pulling the accessory cable  06  back into the cable channel  10  situated on the periphery of the stopped or non-rotating resistance disk assembly  13 , in preparation for another pull of the accessory cable  06 . 
         [0062]      FIG. 10  shows a cross section view of the resistance disk assembly  13  (in  FIG. 2 ), the tension assembly  22  (in  FIG. 4 ), and the inner section of the rewind arm assembly  42  (in  FIG. 8 ) in their assembled configuration. Shows the outer section of the rewind arm assembly  42  and the cut end of the accessory cable  06  (in  FIG. 5 ). Also shows the upper brake disk assembly  24 , and the lower brake disk assembly  25  (in  FIG. 4 ). It is understood, that the threaded spindle  23  of the resistance disk assembly  13  embodiment is mountable to any stationary or portable body harness, object or surface with a mounting hole using a lock nut  69 , or is mountable to a mounting bracket with a mounting hole that&#39;s mounted to another stationary or movable object or surface using a lock nut  69 . 
         [0063]      FIG. 11  shows a top view, of the extension channel  71 , the extension arm  77 , a detachable curved handle grip accessory  129 , and a section of the exercise resistance disk  19 . In operation, the user  02  can use a curved handle grip accessory  129  for example, to exercise their arm in a circular motion by applying enough physical force against the curved handle grip accessory  129  to rotate the exercise resistance disk  19  against an applied frictional resistive force (refer to description of the invention in  FIG. 4 ). The exercise resistance disk  19  can be rotated in a clockwise or counterclockwise direction. One or more extension channels  71  can be fastened to the top face of the exercise resistance disk  19  using flat head screws  73  or the like. The extension channel(s)  71  and the exercise resistance disk  19  can all be of the same embodiment, made of cast aluminum, molded plastic or the like. The detachable curved handle grip accessory  129  can be screwed onto or off of the threaded non-rotative accessory mount  74  by turning the lever arm  75  or the like, situated on the base  70  of the curved handle grip accessory  129  (refer to  FIG. 12 ). The curved handle grip accessory  129 , or any detachable accessory, can be changed to another position within the elongated slot  76  in the extension arm  77  body by turning the lever arm  75 , then sliding the loosened accessory mount  74  and accessory  129  to a desired setting. Which, is indicated by a diameter gauge  78  situated on the face of the extension channel  71 , and a pointer  79  situated on the accessory mount  74 . Then, can turn the lever arm  75  to lock the curved handle grip accessory  129  in place. For the user  02 , to exercise in a circular motion wider than the diameter of the exercise resistance disk  19  itself. The user  02 , can unlock the extension arm  77  that rests in a complementary shaped channel  80  situated in the extension channel  71  body by loosening a studded wing knob  81  that&#39;s aligned through a hole in the extension arm  77  body, and screwed to a T-nut that&#39;s understood to be able to slide along the underside of the elongated slot  82  in the extension channel  71  body. The user  02 , can then slide and extend the loosened extension arm  77  outward to a desired setting indicated by a diameter gauge  78  situated on the face of the extension channel  71  that corresponds to a pointer  83  situated on the face of the extension arm  77 . It is understood that a ball plunger, index pin or the like, extends outward and engages an index hole understood to be in the extension channel  71  body, helping assist in the fast and easy positioning of the extension arm  77 . A stabilizer pin  84 , understood to be part of the extension arm  77  embodiment, is understood to be aligned in the elongated slot  82  in the extension channel  71  body, which helps support the extension arm  77  when it&#39;s  77  fully extended. 
         [0064]      FIG. 12  shows a side view, of the extension channel  71 , the outer section of the extension arm  77 , a section of the exercise resistance disk  19 , and an unattached curved handle grip accessory  129 . It is understood, that a threaded hole coaxially situated in the base  70  of detachable accessories  129  or  145  can be screwed onto the non-rotative accessory mount  74  by turning the lever arm  75  until the base  70  is on tight. It is understood that the slide adjustable accessory mount  74  can also be mounted to the elongated slot  82  in the extension channel  71  for mounting a detachable accessory to the extension channel  71 .  FIG. 13  shows a cross section view, of the exercise resistance disk  19  (in  FIG. 3 ), and the tension assembly  22  (in  FIG. 4 ) in their assembled configuration. Also shows a cross section view of the outer section of the T-arm sleeve  85  frame section, and the elbow  86  frame section of the universal frame assembly  92  (in  FIG. 14 ) loosely held together by means of a retaining ring  98  arranged in radial grooves  98 A. It is understood, a retaining ring  98  arranged in radial grooves  98 A, loosely holds the elbow frame section  86  and the T-arm frame section  87  together. Spherical washer  88  and lock nut  89  fastens the threaded spindle  90  to mounting bracket  93  and the T-arm sleeve  85 , or  90  is mountable to any stationary or portable object or harness with a mounting hole, or is mountable to a mounting bracket with a mounting hole mounted to another stationary or movable object or surface. 
         [0065]      FIG. 14  shows the top view, of the center section of the elevation bar  91 , and an universal frame assembly  92 . An exercise machine may consist of one, or many universal frame assemblies  92  and paired exercise resistance disks  19 . The three independently adjustable frame sections  85 ,  86  and  87  of the universal frame assembly  92 , enables the exercise resistance disk  19  to be adjusted to any angle in relation to the user  02 . The elevation bar  91  adjusts the height of the universal frame assembly  92 . The exercise resistance disk  19 , is fastened to a mounting bracket  93  and the T-arm sleeve  85  using a spherical washer  88  and a lock nut  89  (refer to  FIG. 13 ). The round tubular inner end of the T-arm sleeve  85 , is coaxially situated to rotate about the smaller round tubular outer end of an L-shaped frame section  86  (referred to as elbow  86 ). To change the angle of the exercise resistance disk  19  using the T-arm sleeve  85 , the user  02  can slightly unscrew and loosen a threaded collar  94  that&#39;s coaxially situated on the threaded innermost end of the T-arm sleeve  85 . Then, can disengage a ball plunger  95 , index pin or the like, to unlock the set position of the T-arm sleeve  85 . Which, is now free to be rotated on an axis three hundred sixty degrees in either a clockwise or counterclockwise direction about the elbow  86  to a desired position. Indicated by a pointer  96  located on the elbow  86 , which corresponds to the dial  97  setting located on the T-arm sleeve  85 . Simultaneously, the ball plunger  95  extends outward and into the corresponding index hole understood to be radially arranged around the elbow  86  body, holding the T-arm sleeve  85  in position. Then, can screw tighten the collar  94  to firmly lock the T-arm sleeve  85  in place. The round tubular inner end of the elbow  86 , is coaxially situated inside the larger round tubular outer end of the T-shaped frame section  87  (referred to as T-arm  87 ). To change the position of the exercise resistance disk  19  using the elbow  86 , the user  02  can slightly unscrew and loosen a threaded collar  99 , that&#39;s coaxially situated on the threaded outermost end of the T-arm  87 . Then, can disengage a ball plunger  100 , index pin or the like, to unlock the set position of the elbow  86 . Which, is now free to be rotated on an axis three hundred sixty degrees, in a clockwise or counterclockwise direction about the T-arm  87  to a desired position. Indicated by a pointer  101  located on the T-arm  87 , which corresponds to the dial  102  setting located on the elbow  86 . Simultaneously, the ball plunger  100  extends outward and into the corresponding index hole or the like, understood to be radially arranged around the elbow  86  body, holding the elbow  86  in position. Then, can screw tighten the collar  99  to firmly lock the elbow  86  in place. To change the angle of the exercise resistance disk  19  using the T-arm  87 , the user  02  can slightly unscrew and loosen a studded wing knob  103 . Which, increases the lengthwise separation that is understood to be between the bottom and top flanges  104 , situated at the top end of the T-arm  87 . Thus, lessening the clamping pressure of the T-arm  87  around the round tubular elevation bar  91 , making it  87  loose. Then, the user  02  can rotate the loosened T-arm  87  three hundred sixty degrees in a clockwise or counterclockwise direction about the axis of the elevation bar  91 , or can slide it  87  along sideways, to a desired position. Indicated when the desired setting on the dial  105  is aligned with a line marker  106  situated lengthwise along the elevation bar  91 . Then the T-arm  87  can be locked in place by tightening the wing knob  103 . The elevation bar  91  can be a horizontal or vertical support, depending on the frame&#39;s configuration. 
         [0066]      FIG. 15  shows the front view of the exercise machine  01 . It is understood, that the resistance disk encasements  68  can be mounted to either side of the platform  03  using fasteners. Shows the front cover of a resistance disk encasement  68  has been removed, to show that one or more resistance disk assemblies  13  can be mounted to a mounting bracket  67  or the like, situated inside a resistance disk encasement  68 . Shows part of the platform&#39;s  03  front cover  107  has been cut away, to show that a resistance disk assembly  13  can be mounted to the inside of a platform  03 , like to a crossbar  108  or the like. Also shows that the platform&#39;s  03  metal frame can be covered by plywood  109  or the like, and a skid proof rubber mat  110 , which have been cut away to show a hole  111  situated in the top of the platform  03 . Enabling the user  02  to access the resistance disk assembly&#39;s  13  tension knob  27  by opening a small hinged access door  112 . A studded wing knob  113 , used to loosen and slide a mounted pulley  09 , located inside the platform  03 , along an elongated slot  114  in the front cover  107  of the platform  03 . A rail  115  or the like, understood to be situated down the center of the platform  03 , enables the user  02  to use accessories like a rower seat or workout bench with wheels to roll back and forth on while exercising. It is understood, that a square tubular support column  117  is securely fastened to either side of the platform  03  using fasteners  123 . A slightly bent square tubular crossbar  118 , is securely fastened to both side columns  117  and the upper cross piece  119  using fasteners  123 . It  118 , also supports two stationary pulleys  08 , and two suspended pivot pulleys  121  being slide adjustable within two elongated slots understood to be running lengthwise on the underside of the crossbar  118 . It is understood, two crossbars  122  are fastened between the rear column  116  and each side column  117  situated on either side of the exercise machine  01  using fasteners  123 . It is understood, that the rear column  116 , the two side columns  117 , crossbars  122  and  118 , and the upper cross piece  119 , can be made of square or round tubular metal, or the like. The height adjustable elevation bar  91 , has a square tubular column sleeve  124  perpendicularly situated at each end. A hanging ring pull  125  is attached to the ends of two steel cables  126  or the like. Which, are routed through a small hole, understood to be situated at the center on the underside of the elevation bar  91 . To change the height of the resistance disk assemblies  13  using the elevation bar  91 , the user  02  can pull against the ring pull  125 . By this action, the two steel cables  126  separately routed in opposite directions through the inside of the hollow elevation bar  91  and linked to spring loaded index pins or the like, understood to be situated on the innermost side of each column sleeve  124 . Are disengaged from resting inside the index holes  133  of both height gauges  134 , understood to be situated on the innermost side of both side columns  117 . Thus, freeing the elevation bar  91 , which enables the user  02  to raise or lower the elevation bar  91  to a desired height. Then, can release the ring pull  125 , which urges both spring loaded index pins to extend outward and into the index holes  133  of both height gauges  134 , thereby locking the elevation bar  91  in position. The index holes  133  and height gauge  134 , are also situated on the rear column  116 . It is understood, that a counterweight  140  is suspended inside each side column  117  using a cable  128 . Each cable  128  is routed through a pulley  141  situated at the top of each side column  117 (refer to  FIG. 17 ), and then connected to each end of the elevation bar  91 . The counterweights  140 , will counter the weight of the elevation bar  91 , the universal frame assemblies  92  and the exercise resistance disks  19  for the easy positioning of the elevation bar  91 . Similar to how counterweights work in the opening and closing of a double hung window. A curved handle grip accessory  129 , is shown attached to each exercise resistance disk  19 . A stationary pulley  120 , is mounted to a square tubular column sleeve  130  situated on each side column  117 . A stationary pulley  120 , is mounted on either side of the square tubular column sleeve  131 , situated on the rear column  116 . The height of the stationary pulleys  120  can be adjusted by pulling out a release pin  132 , index pin or the like. Then, can raise or lower column sleeve  130  or  131  to the desired height, and reinsert the release pin  132  into the corresponding index hole  133  of the height gauge  134  situated on columns  116  or  117 . 
         [0067]      FIG. 16  shows a side view of the exercise machine  01 . It is understood, that two resistance disk encasements  68  are mounted to both sides of this particular type exercise machine  01 . It is understood, that one or more resistance disk encasements  68  can be mounted to any frame type structure, or to any surface like a wall, floor, or ceiling, depending on the configuration of exercise machine and or the application. Shows the side cover of a rear resistance disk encasement  68  is cut away, to show the accessory cable  06 , understood to be situated on the periphery of a resistance disk assembly  13 , is at rest and is routed to a stationary pulley  120  that&#39;s mounted to a column sleeve  130 . The cover of the front resistance disk encasement  68  is also cut away, to show the accessory cable  06  and the resistance disk assembly  13  at rest. The resistance disk assemblies  13  in both encasements  68  are understood to be mounted to mounting holes in the mounting brackets  67  using lock nuts  69 . The mounting brackets  67 , are understood to be mounted to the frame of the platform  03  using fasteners  123 . It also shows the side cover and frame of the platform  03  have been removed, to show that an accessory cable  06  is routed from the periphery of a resistance disk assembly  13  to a stationary primary pulley  09  mounted on a crossbar  108 . Then, continues to a pivot pulley  135 , that&#39;s mounted to a pulley assembly bracket  136 , and out through an elongated opening  137  understood to be in the top of the front cover  107  of the platform  03  (refer to  FIG. 17 ). To change the position of that particular accessory cable  06 , the user  02  can slightly unscrew and loosen a studded wing knob  113  situated on the front cover  107  of the platform  03 . Which, loosens the pulley assembly bracket  136  situated inside the platform  03 . Enabling the user  02  to slide the loosened wing knob  113  along the outside of the elongated slot  114  in the front cover  107  (refer to  FIG. 15 ), while the attached pulley assembly bracket  136  is being slid along the inside of the elongated slot  114  inside the platform  03 . Thus, changing the position of the accessory cable  06 . Then, the user  02  can lock the pulley assembly bracket  136  in place and the pulley  135  in position by tightening the wing knob  113 . Shows a crossbar  122  is fastened between a side column  117  and the rear column  116  for added structural support using fasteners  123 .  FIG. 17  shows a top view of the exercise machine  01 . Shows the upper cross piece  119  is fastened to both, the rear column  116  and the crossbar  118  using fasteners  123 . Shows part of the platform  03  is cut away, to better show the accessory cable  06  is routed from the periphery of the resistance disk assembly  13  to a primary pulley  09 , then to a pivot pulley  135 , and lastly out through an elongated opening  137  situated in the top of the front cover  107 , described in (description of the invention for  FIG. 16 ). The elongated slot  114 , understood to be situated on the front of the front cover  107  of the platform  03  (see  FIG. 15 ), is relative to the elongated opening  137  situated on the top of the front cover  107  of the platform  03 . Shows a ring  138 , hole or the like, used to open an access door  112  in the platform  03  in order to adjust the tension knob  27 . Shows index holes  139  aligned down the center of the rail  115 , which are used to lock an accessory like a rower seat or workout bench with wheels in position. It is understood, that there can be one or more resistance disk assemblies  13  mounted inside a platform  03 . Shows this exercise machine  01  has four resistance disk assemblies  13  understood to be mounted to cross bars  108  or the like, situated inside the platform  03 . A small portable model my have one or two lightweight resistance disk assemblies  13  mounted per platform. An even smaller portable model may consist of just one resistance disk assembly  13 , mountable to any stationary or movable object, surface or mounting bracket with a mounting hole like a body harness, a wall, floor or ceiling, or the like. Shows the four wing knobs  113  outside the platform  03 , are relative to the four resistance disk assemblies  13  mounted inside the platform  03 . Also shows the counterweights  140  suspended inside the two side columns  117 , the two pulleys  141  and the cables  128  used to counter the weight of the elevation bar  91 , the universal frame assemblies  92 , and the exercise resistance disks  19  (refer to  FIG. 15 ). 
         [0068]      FIG. 18  shows the top view of a modified version of the exercise resistance disk  19 , reduced in mass to a pear shaped disk  142  (hereafter referred to as modified resistance disk  142 ). However, it works in the same manner as the circular shaped exercise resistance disk  19 , being comprised of the same components including, the pressure plates  17 A and  17 B, the tension assembly  22 , the extension channel  71 , and the extension arm  77 . The modified resistance disk  142  can be reduced even further to a skeleton like frame. Where, just the extension channel  71  and bottom pressure plate  17 B are combined together to be of the same embodiment, and comprised of little or no modified resistance disk  142  body. The rest of the tension assembly  22  (refer to  FIG. 4 ), and the extension arm  77  are basically in the same configuration.  FIG. 19  shows the side view of a detachable curved handle grip accessory  129 , used to rotate the exercise resistance disk  19  repeatedly. The curved handle grip accessory  129  consists of a base  70  with a threaded hole understood to be coaxially situated at it&#39;s  70  center. A lever arm  75 , used to tighten the base  70  of the curved handle grip accessory  129  to an accessory mount  74 . A curved handle  144  with a foam rubber grip. The straight part of the curved handle  144  is coaxially mounted to rotate about an inner shaft understood to be part of the base  70 . The shape of the curved handle grip accessory  129 , enables the user  02  to grip the curved handle grip accessory  129  from different angles. Therefore, the user  02  can exercise their arm in a circular motion at broader angles in relation to the exercise resistance disk  19 . 
         [0069]      FIG. 20  shows the side view of a detachable swinging hand grip accessory  145 , used to rotate the exercise resistance disk  19  repeatedly. The swinging hand grip accessory  145  consists of a base  70  with a threaded hole understood to be coaxially situated at it&#39;s  70  center. A lever arm  75 , used to tighten the base  70  of the swinging hand grip accessory  145  to an accessory mount  74 . A center section  146 , that is coaxially mounted to rotate about the base  70  by means of a heavy duty pin, rivet or the like. Which, is understood to be aligned through center holes in both, the top of the base  70  and the bottom of the center section  146 , holding them securely together, but loose enough for the center section  146  to rotate freely about the base  70 . The innermost end of the hand grip frame  147  is loosely joined to the top of the center section  146  by means of a pin  149  or the like, forming a movable joint. Which, enables the hand grip frame  147  to swing or rock back and forth on the axis of pin  149 . The hand grip  148  is mounted on the outermost end of the hand grip frame  147 . The relative position of the swinging hand grip accessory  145 , enables the user  02  to grip the swinging hand grip accessory  145  from broad angles. Therefore, the user  02  can exercise their arm in a circular motion at many different angles in relation to the exercise resistance disk  19 . 
         [0070]      FIG. 21  shows the top view of a bat simulator accessory  150 . Which, strengthens the particular muscles used to swing a baseball or softball bat. It is understood, that a resistive force is applied against the user&#39;s  02  swing (refer to description of the invention in  FIG. 7 ). The bat simulator body  155  weighs as much as an average baseball bat by means of implanted weights, and is about half the length of an average baseball bat. It can be made from wood, plastic, aluminum or the like. A clasp  15 , fastener or the like, attached to the free end of the accessory cable  06 , can be attached to an eye bolt cable connector  152  or the like. The threaded end of the eye bolt cable connector  152  is aligned through an elongated slot  153  in the bat simulator body  155  and screwed to a threaded wing knob  154  or the like. To change the leverage applied to the user&#39;s  02  wrists, the user  02  can slightly unscrew and loosen the wing knob  154 . Then, can slide the loosened eye bolt cable connector  152  along the elongated slot  153 , either inward for more leverage or outward for less leverage. Then, can screw tighten the wing knob  154 , which also tightens the eye bolt cable connector  152  in place. 
         [0071]      FIG. 22  shows the side view of a racket simulator accessory  156 . Which, strengthens the particular muscles used to swing a tennis racket, racket ball racket or a squash racket. It is understood, that a resistive force is applied against the user&#39;s  02  swing (refer to description of the invention in  FIG. 7 ). The racket simulator body  157  weighs as much as an average racket by means of implanted weights, and is about half the length of an average tennis racket. It can be made from wood, plastic, aluminum or the like. A clasp  158 , fastener or the like, attached to the free end of the accessory cable  06 , can be attached to an eye bolt cable connector  159  or the like. The threaded end of the eye bolt cable connector  159  is aligned through an elongated slot  160  in the racket simulator body  157  and is understood to be screwed to a threaded wing knob  161  or the like. To change the leverage applied to the user&#39;s  02  wrists, the user  02  can slightly unscrew and loosen the wing knob  161 . Then, can slide the loosened eye bolt cable connector  159  along the elongated slot  160 , either inward for more leverage or outward for less leverage. Then, can screw tighten the wing knob  161 , which also tightens the eye bolt cable connector  159  in place. 
         [0072]      FIG. 23  shows the side view of a golf club simulator accessory  162 . Which, strengthens the particular muscles used to swing a golf club. It is understood, that a resistive force is applied against the user&#39;s  02  swing (refer to description of the invention in  FIG. 7 ). The golf club simulator body  163  weighs about as much as an average golf club by means of implanted weights, and is about half the length of an average golf club. It can be made from wood, plastic, aluminum or the like. A clasp  164 , fastener or the like, attached to the free end of an accessory cable  06 , can be attached to an eye bolt cable connector  165  or the like. The threaded end of the eye bolt cable connector  165  is aligned through an elongated slot  166  in the golf club simulator body  163  and is understood to be screwed to a threaded wing knob  167  or the like. To change the leverage applied to the user&#39;s  02  wrists, the user  02  can slightly unscrew and loosen the wing knob  167 . Then, can slide the loosened eye bolt cable connector  165  along the elongated slot  166 , either inward for more leverage or outward for less leverage. Then, can screw tighten the wing knob  167 , which also tightens the eye bolt cable connector  165  in place. 
         [0073]      FIG. 24  shows the side view of a two-way extension bar accessory  168  (hereafter referred to as two-way bar  168 ). The two-way bar body  173  can be straight or bent and made of round tubular lightweight aluminum tubing or the like, and can be a long or short in length. Regularly spaced foam rubber hand grips  169 , enables the user  02  to grip the two-way bar  168  at different points along it&#39;s  168  length to perform various exercises. Eye bolt cable connectors  170  or the like, are situated on both, the top and bottom sides of the two-way bar  168 , at the center, and half way towards either end. Enabling the user  02  to attach accessory cables  06  to either the top, the bottom, or both the top and bottom sides of the two-way bar  168  at the same time. Which, enables the user  02  to push against the two-way bar  168  in one direction, urging a resistance disk assembly  13  to rotate. Then, the user  02  can pull against the two-way bar  168  in the opposite direction, urging a second resistance disk assembly  13  to rotate. Therefore, the user  02  can perform two-way or push-then-pull exercises by using two separate resistance disk assemblies  13 , alternately. An accessory cable adapter  171  with clasp connectors  172  or the like, can be used to connect an accessory cable  06  to two eye bolt cable connectors  170  at one time, to evenly distribute the load forced on the two-way bar  168  while performing heavy duty exercises. There are other common exercise accessories the user  02  can attach to the accessory cable adapter  171  like hand grips  04 , loops, wrist straps, ankle straps, etc. 
         [0074]    The invention has been described with reference to preferred embodiments. Obvious modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the invention be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.