Patent US5160155A successfully refreshed from Google Patents.
US5160155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skateboard having two wheels in tandem
Assignee: Individual
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Filing: 1989-01-11
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Granted: 1992-11-03
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Expires: 2009-01-11
Abstract
Abstract Skateboard comprising a board (13, 14) mounted only on two wheels (4, 9) positioned in tandem, one at the front and the other at the rear, with a means suitable for providing steering, characterized in that the rear wheel (4) is fixed in direction while the front wheel (9) is freely self-steering, its axle (8) being mounted in a fork (7) capable of pivoting freely about a pivot axis (10) whose point of contact (11) with the ground is situated in front of the point of contact (12) of the front wheel (9) with the ground, and in that the board possesses a front part (13) and a rear part (14) situated on either side of the perpendicular line through the axis of the rear wheel (4).
Inventors
- 👤 Jacques Barachet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:56
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/01; A63C17/0033; A63C17/014; A63C17/016
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A skateboard comprising: a board having a front end for receiving a first foot of a user, a back end for receiving a second foot of a user, and a longitudinal axis; front and rear wheels having respective axles and positioned in tandem and mounted to said board, said front wheel mounted at said front end and said rear wheel mounted on an axle in an opening in said board provided intermediate said front end and said back end, said wheels being aligned along said longitudinal axis, said rear wheel being mounted with a fixed axis of rotation relative to said longitudinal axis; and a fork pivotally mounted on said front end of said board and having an axis of pivoting, said front wheel being carried on its axle by said fork and having a point of contact on the ground which is to the rear of an extended point of contact of the axis of pivoting of the fork, whereby said front wheel si self-steering.
Claim 2
Dependent Claim
166 words
A skateboard comprising: a board having a front end for receiving a first foot of a user, a back end for receiving a second foot of a user, and a longitudinal axis; front and rear wheels having respective axles and positioned in tandem and mounted to said board, said front wheel mounted at said front end and said rear wheel mounted on an axle in an opening in said board provided intermediate said front end and said back end, said wheels being aligned along said longitudinal axis, said rear wheel being mounted with a fixed axis of rotation relative to said longitudinal axis; and a fork pivotally mounted on said front end of said board and having an axis of pivoting, said front wheel being carried on its axle by said fork and having a point of contact on the ground which is to the rear of an extended point of contact of the axis of pivoting of the fork, whereby said front wheel si self-steering.
Claim 3
Dependent Claim
22 words
A skateboard according to claim 1 further comprising means for restoring said fork to a median position aligned with said longitudinal axis.
Claim 4
Dependent Claim
42 words
A skateboard according to claim 2 wherein said means for restoring comprises means for mounting said axis of pivoting such that said axis of pivoting is inclined from the top to bottom and from front to back with respect to said board.
Claim 5
Dependent Claim
15 words
A skateboard according to claim 2, wherein said means for restoring comprises an elastic member.
Claim 6
Dependent Claim
13 words
A skateboard according to claim 4, wherein said elastic member comprises a spring.
Claim 7
Dependent Claim
37 words
A skateboard according to any one of claims 1 through 5, wherein said wheels comprise elastic tires, and wherein said board is located above to the ground a distance less than a diameter of said rear wheel.
Claim 8
Dependent Claim
48 words
A skateboard according to any one of claims 1 through 5, further comprising a brake shoe positioned beneath the back end of said board, whereby rocking said board about the axle of said rear wheel brings said brake shoe into contact with the ground for braking said skateboard.
Claim 9
Dependent Claim
27 words
A skateboard according to any one of claim 1 through 5, wherein a rearmost part of said back end is raised upwardly with respect to said board.
References Cited (Backward Citations)
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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) | 1995-11-03 | 1996-05-04 | 1996-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-03 | 2000-05-04 | 2000-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-03 | 2004-05-04 | 2004-11-03 | $7700.00 | Window Closed / Lapsed |