 Wind instrument toy |
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| Method and apparatus for starting a model vehicle on a race track |
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| Toy track presenting interference to passage of toy vehicles thereon |
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| Intra-uterine contraceptive device |
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| Multiple magnetic transducer head, particularly for use with multi-track video tape recording apparatus |
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| Apparatus for driving objective lens in tracking direction |
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Exercise or therapy device or apparatus
| Details |
Inventors: Ray, David B.;
Assignee: Versatile Equipment Co., Inc. (Oxford, AL)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
An exercise or therapy device provides for the foot to be fixed and the knee to be biased to a flexed position such that the quadriceps muscles straighten the leg or extend the knee against resistance. Preferably the user is seated with his foot or feet fixed against a foot support, and the posterior of the knee is engaged by a movable member which biases the knee in a flexing direction with a selectable force. The seat preferably is movable back and forth to accommodate the flexing and extending of the knee. The femur is not fixed as in many machines where the knee is fixed and the foot moves. The device is particularly suited for strengthening of the quadriceps, but is useful in connection with many different types of knee therapy or knee strengthening. The device is also effective for strengthening the hip flexors and extensors and the hamstrings. A basic concept of the device involves its simulation of natural sports activity involving running, in which the foot is planted and the knee moves to accommodate the activity. Various adjustments are provided on the device to accommodate different users. Preferred versions of the device are assembled in a unitary frame. |
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DETAILED DESCRIPTION OF EMBODIMENTS Referring to FIG.
1 of the drawings, the illustrated embodiment comprises a framework made up of two forward vertical members 1 and 4 and two rear vertical members 2 and 3, interconnected by side base members 5 and 6, cross base members 7 and 8, upper cross members 10 and 11, and cross member 9.
All of these members are steel members of square or rectangular section.
Metal rods 12 and 13 are connected between upper cross members 10 and 11.
This assemblage of interconnected members forms a strong rigid frame.
A seat 14 is slidably supported on rods 12 and 13 by a metal base 15 which carries sleeve bearing members 16, so as to permit free movement of seat 14 forwardly and rearwardly along guide rods 12 and 13.
A conventional locking member, not shown, may be provided as part of the seat to lock the seat in position at selected locations, although in the normal use of the device, seat 14 moves freely back and forth with the user.
Side handles, one of which is shown at 26, extend from the rigid structure of seat 14 at both sides for grasping by the user.
A guide rod 17 is connected to and extends between lower and upper cross members 9 and 11.
Knee engaging padded roller members 20 are rotatably mounted to upright mounting member 18 which, at its lower end, carries sleeve bearing members 19 for slidably and guidably mounting roller members 20 to guide rod 17 so as to permit the assembly comprising knee engaging roller members 20 to move vertically upwardly and downwardly.
Upward force is applied to the knee engaging members 20 by a roller chain or the like 21 which is connected at one end to one of the sleeve bearing members 19, and passes around a sprocket 22 to connect with a weight selection pin which extends down through weight members 23, this arrangement constituting a conventional weight selection system whereby a selected number of weights to be lifted is effected by removal and reinsertion of a pin or the like through openings in or between the weight members 23 to engage with the pin carried by chain 21
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Exercise Devices 
