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US4542898A
Expired / Lapsed
US
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Combination manually and inertia propelled ski-motion exercise machine
Assignee: Individual
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Filing: 1981-10-05
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Granted: 1985-09-24
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Expires: 2001-10-05
Abstract
Abstract This machine is manually and inertia operated, the movement of the use being like that of a skier traveling down a typical ski-slope. It contains primarily of a vertical and rectangular frame, having a board pivotal on the top in a see-saw like fashion by the user. It further includes roller mounted footrests, and a connecting rod is secured to the board and is secured to a crank arm and sprocket, which by a chain, drives a second sprocket attached to a flywheel, which will cause the ski-motion to continue, after a few applied motions of the user to the board of the machine.
Inventors
- 👤 Harold Grushkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:09
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/18; A63B21/00; A63B21/22; A63B21/225; A63B22/00; A63B22/16; A63B2208/00; A63B2208/02; A63B2208/0228
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
A combination manually and enertia propelled ski-motion excercise machine, comprising, in combination, a rectangular frame, a pair of legs secured to said frame, providing lateral stabilizing and support means for said frame, a seat and post secured to said frame, for the user to sit upon, a pivotal board secured to said frame, with footrest members for the users feet to operate said machine, a pair of sprockets with chain means secured to said frame, for rotating a flywheel, which stores energy for continuing the pivoting motion of said board after said machine is operated several revolutions of said pair of sprockets, said flywheel, and crank means, that are secured to said frame.
Claim 2
Dependent Claim
113 words
A combination manually and enertia propelled ski-motion excercise machine, comprising, in combination, a rectangular frame, a pair of legs secured to said frame, providing lateral stabilizing and support means for said frame, a seat and post secured to said frame, for the user to sit upon, a pivotal board secured to said frame, with footrest members for the users feet to operate said machine, a pair of sprockets with chain means secured to said frame, for rotating a flywheel, which stores energy for continuing the pivoting motion of said board after said machine is operated several revolutions of said pair of sprockets, said flywheel, and crank means, that are secured to said frame.
Claim 3
Dependent Claim
77 words
The combination according to claim 1, wherein said board is secured above the upper longitudinal portion of said frame by a pair of spaced apart bearing members, which are fixedly secured to the bottom of said board by suitable fasteners, and said upper portion of said frame is freely and rotatably received in said bearing members, so as to enable said board to be pivotal laterally about the longitudinal axis of said upper portion of said frame.
Claim 4
Dependent Claim
54 words
The combination according to claim 2, wherein a plurality of suitable pins are fixedly secured, transversely through said upper portion of said frame in a suitable manner, and are adjacent to each side of said bearing members, so as to prevent forward and aft sliding of said board when said machine is in operation.
Claim 5
Dependent Claim
100 words
The combination according to claim 3, wherein said crank means comprises a connecting rod secured at one end, to a universal joint member, which is fixedly secured to the bottom of one side portion of said board by suitable fasteners, and the opposite end of said connecting rod is pivotally secured by pivot pin means, to one end of a crank arm, and the opposite end of said crank arm is rotatably received in a bearing containing hub and a vertical tube, which is fixedly secured to and between said upper longitudinal and the lower longitudinal portion of said frame.
Claim 6
Dependent Claim
106 words
The combination according to claim 4, wherein said opposite end of said crank arm is fixedly secured in one of said sprockets, which includes said chain means that is received on the other of said sprockets, and said other of said sprockets is secured to a shaft rotatably secured by suitable means, to a hub fixedly secured in a suitable manner to the upper rear corner of said frame, and said flywheel is secured stationary to said shaft by suitable fastening means, so as to be rotated by said crank means, when said board is pivoted from side to side on said frame by said use.
Claim 7
Dependent Claim
62 words
The combination according to claim 5, wherein said footrest members are a pair, which are spaced above said board, and each includes a projecting central pin, fixedly secured in each end by suitable means, and each of said pins is rotatably secured in the center upper portion of a truck member, which supports said footrest members above said board, by roller means.
Claim 8
Dependent Claim
75 words
The combination according to claim 6, wherein said roller means are a pair, secured spaced apart to each of said truck members by pin means, and said roller means are in engagement with the bottom of a groove extending along the longitudinal sides of the top of said board, and a projection on each corner of said board, provides stop means for said rollers, so as to prevent said footrest members from leaving said board.
Claim 9
Dependent Claim
47 words
The combination according to claim 7, wherein said footrest members are tiltable, laterally by said pin means, so as to enable said user to keep his feet comfortable in a toe and heel receiving member, which is fixedly secured to the top surface of each said footrests.
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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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |