Patent US3630540A successfully refreshed from Google Patents.
US3630540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified skate board to provide stopping action
Assignee: Individual
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Filing: 1970-01-20
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Granted: 1971-12-28
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Expires: 1990-01-20
Abstract
Abstract An exerciser is disclosed which includes a top board for engagement by the foot, the board having therebelow a centrally disposed longitudinally movable roller to provide a foot and end rollers to provide control: the board can be moved forward, stopped, steered and maneuvered by the flexing of the ankles of the user.
Inventors
- 👤 William J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:23
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/16; A63B2208/00; A63B2208/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
An exerciser which comprises a top board for engagement by the foot, central supporting means for said board intermediate the ends of the board for permitting forward and rearward tilting of the board, said means comprising at least one set of rollers longItudinally movable in guided relation to said board, and means for controlling the longitudinal movement of said rollers with respect to the board, said roller being carried on a bracket longitudinally movable on said board, and said bracket being slidably carried on a rod extending longitudinally on the bottom of the board.
Claim 2
Dependent Claim
94 words
An exerciser which comprises a top board for engagement by the foot, central supporting means for said board intermediate the ends of the board for permitting forward and rearward tilting of the board, said means comprising at least one set of rollers longItudinally movable in guided relation to said board, and means for controlling the longitudinal movement of said rollers with respect to the board, said roller being carried on a bracket longitudinally movable on said board, and said bracket being slidably carried on a rod extending longitudinally on the bottom of the board.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |