Patent DE1607802C3 successfully refreshed from Google Patents.
US4721301A
Expired / Lapsed
US
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Exercise machine
Assignee: CALAR HOME PRODUCTS Ltd
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Filing: 1986-08-13
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Granted: 1988-01-26
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Expires: 2006-08-13
Abstract
Abstract An exercise machine comprising a frame for supporting the vertical lifting of a stack of weights. The stack of weights are connected to a cable which passes through a pulley for multiplying the amount of force necessary to lift the stack of weights when a person using the exercise machine pulls on the end of a cable remote the stack of weights. The mass of the weights necessary for lifting in order to achieve the same force to be exerted by a person is thereby reduced.
Inventors
- 👤 Thomas P. Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:24
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/06; A63B21/062; A63B21/0626; A63B21/0628
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
287 words
An exercise machine comprising in combination: (a) a fixed frame for supporting the vertical lifting of a movable weight, (b) a movable weight supported in said frame for vertical lifting, (c) first cable means attached at a first end ot the movable weight, (d) a first pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the first pulley receiving the first cable means; (e) a second pulley and movable block therefor, the movable block mounted at an uppermost portion to a second end remote the first end of the first cable means and mounted at a lowermost portion to a first end of second cable means, the second pulley receiving the first cable means; (f) a third pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the third pulley receiving the portion of the first cable means intermediate the portion thereof received by the second pulley and the second end of the first cable means; (g) second cable means attached at a first end to the lowermost portion of the movable block of the second pulley; (h) at least a fourth pulley and fixed block therefor attached to the frame at a position spaced vertically below the first fixed pulley and third fixed pulley, the fourth pulley receiving the second cable means (i) handle means attached to a second end of the second cable means, suitable for grasping by a person applying force to the handle means for lifting the movable weight whereby the amount of force applied by a person grasping the handle means necessary for lifting the weight is multiplied by a factor of about three (3).
Claim 2
Dependent Claim
287 words
An exercise machine comprising in combination: (a) a fixed frame for supporting the vertical lifting of a movable weight, (b) a movable weight supported in said frame for vertical lifting, (c) first cable means attached at a first end ot the movable weight, (d) a first pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the first pulley receiving the first cable means; (e) a second pulley and movable block therefor, the movable block mounted at an uppermost portion to a second end remote the first end of the first cable means and mounted at a lowermost portion to a first end of second cable means, the second pulley receiving the first cable means; (f) a third pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the third pulley receiving the portion of the first cable means intermediate the portion thereof received by the second pulley and the second end of the first cable means; (g) second cable means attached at a first end to the lowermost portion of the movable block of the second pulley; (h) at least a fourth pulley and fixed block therefor attached to the frame at a position spaced vertically below the first fixed pulley and third fixed pulley, the fourth pulley receiving the second cable means (i) handle means attached to a second end of the second cable means, suitable for grasping by a person applying force to the handle means for lifting the movable weight whereby the amount of force applied by a person grasping the handle means necessary for lifting the weight is multiplied by a factor of about three (3).
Claim 3
Dependent Claim
298 words
An exercise machine comprising in combination: (a) a fixed frame for supporting the vertical lifting of a movable weight; (b) a movable weight supported in said frame for vertical lifting; (c) first cable means attached at a first end to the movable weight; (d) a first pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the first pulley receiving the first cable means; (e) a second pulley and movable block therefor, the movable block mounted solely at a lowermost portion to a first end of second cable means, the second pulley receiving the first cable means; (f) a third pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the third pulley receiving the portion of the first cable means of (c) intermediate the portion thereof received by the second pulley and the second end of the first cable means; (g) a second end of the first cable means attached to the frame at a position about intermediate the first fixed pulley and the third fixed pulley; (h) second cable means attached at a first end to the lowermost portion of the movable block of the second pulley; (i) at least a fourth pulley and fixed block therefor attached to the frame at a position spaced vertically below the first fixed pulley and third fixed pulley; the fourth pulley receiving the second cable means; (j) handle means attached to a second end of the second cable means, suitable for grasping by a person applying force to the handle means for lifting the movable weight; whereby the amount of force applied by a person grasping the handle means necessary for lifting the weight is multiplied by a factor of about two (2).
Claim 4
Dependent Claim
298 words
An exercise machine comprising in combination: (a) a fixed frame for supporting the vertical lifting of a movable weight; (b) a movable weight supported in said frame for vertical lifting; (c) first cable means attached at a first end to the movable weight; (d) a first pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the first pulley receiving the first cable means; (e) a second pulley and movable block therefor, the movable block mounted solely at a lowermost portion to a first end of second cable means, the second pulley receiving the first cable means; (f) a third pulley and fixed block therefor attached to the frame at a position spaced vertically above the movable weight, the third pulley receiving the portion of the first cable means of (c) intermediate the portion thereof received by the second pulley and the second end of the first cable means; (g) a second end of the first cable means attached to the frame at a position about intermediate the first fixed pulley and the third fixed pulley; (h) second cable means attached at a first end to the lowermost portion of the movable block of the second pulley; (i) at least a fourth pulley and fixed block therefor attached to the frame at a position spaced vertically below the first fixed pulley and third fixed pulley; the fourth pulley receiving the second cable means; (j) handle means attached to a second end of the second cable means, suitable for grasping by a person applying force to the handle means for lifting the movable weight; whereby the amount of force applied by a person grasping the handle means necessary for lifting the weight is multiplied by a factor of about two (2).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |