US5165708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-foot plate pedaling skate
Assignee: Individual
•
Filing: 1991-08-28
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Granted: 1992-11-24
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Expires: 2011-08-28
Abstract
Abstract A double-foot plate pedaling skate, comprising two foot plates alternatively pedaled to force three sets of wheels to run. The three sets of wheels include a first set of wheels mounted on the wheel axles of one foot plate at one side, a second set of wheels mounted on the wheel axles of the other foot plate at the opposite side, and a third set of wheels respectively secured to and retained between the two food plates permitting the two foot plates to be alternatively disposed at two different angular positions at 180° from each other so that the two foot plates can be alternatively pedaled to provide axle and wheel rotation.
Inventors
- 👤 Chan I-Chuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:19
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20888; Y10T74/21; Y10T74/2164; Y10T74/2168
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
A double-foot plate pedaling skate, comprising two foot pates mounted on a plurality of sets of wheels and alternatively pedaled to provide wheel rotation, said foot plates each having a plurality of axle seats transversely disposed on the bottom edge thereof at two opposite ends each of which define therein an elongated groove for rotatably holding a wheel axle by clamps secured to said foot plate bottom edge, said wheel axle having two square blocks at two opposite ends each of which having a forked terminal end with two raised portions made thereon at two opposite sides; said wheels each having two square holes symmetrically disposed at two eccentric locations, said square holes each having two raised blocks at an inside surface at two opposite locations, said wheels being respectively mounted on said wheel axles at two opposite ends by inserting each square block at either end on either of said wheel axles in either of said square holes on either of said wheels permitting said two raised portions to engaged with said two raised blocks.
Claim 2
Dependent Claim
176 words
A double-foot plate pedaling skate, comprising two foot pates mounted on a plurality of sets of wheels and alternatively pedaled to provide wheel rotation, said foot plates each having a plurality of axle seats transversely disposed on the bottom edge thereof at two opposite ends each of which define therein an elongated groove for rotatably holding a wheel axle by clamps secured to said foot plate bottom edge, said wheel axle having two square blocks at two opposite ends each of which having a forked terminal end with two raised portions made thereon at two opposite sides; said wheels each having two square holes symmetrically disposed at two eccentric locations, said square holes each having two raised blocks at an inside surface at two opposite locations, said wheels being respectively mounted on said wheel axles at two opposite ends by inserting each square block at either end on either of said wheel axles in either of said square holes on either of said wheels permitting said two raised portions to engaged with said two raised blocks.
Claim 3
Dependent Claim
111 words
The double-foot plate pedaling skate of claim 1 wherein said plurality of sets of wheels include a first set of wheels secured to one foot plate at one side, a second set of wheels secured to the other foot plate at the opposite side and a third set of wheels respectively secured to and retained between said two foot plates, the two square holes on each of said third set of wheels being respectively connected to a corresponding wheel axle on each foot plate permitting said two foot plates to be alternatively disposed at two different angular positions at 180° from each other for alternate pedalling motion to rotate the wheels.
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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) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |