US4285514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ramp device for practicing wheeled sports
Assignee: Individual
•
Filing: 1980-01-25
•
Granted: 1981-08-25
•
Expires: 2000-01-25
Abstract
Abstract A ramp on which bicycle riding, skateboarding, and rollerskating etc. may be practiced comprising two rectangular plates placed in juxtaposition to one another and interconnected by an elongated hinge capable of forming triangularly inclining surfaces having supporting side strips and flaps, or an apertured stick adjustably attachable to projections on the plates to vary the angles of the inclined surfaces for placement on the ground. Jointed knee braces are mounted between the triangular flaps and the underside of the rectangular plates.
Inventors
- 👤 Robert Romero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:58
CPC Classifications
A; A63; A63G; A63G31/00; A63C; A63C19/00; A63C19/10; E; E01; E01C; E01C13/00; E01C13/003; A63C2203/00; A63C2203/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A ramp device for practicing wheeled sports thereon, comprising: (a) A plurality of rectangular plates of rigid material, edge portions of which are arranged in juxtaposition to each other; (b) a continuous hinge, extending connectively along and between the juxtaposed edge portions of the rectangular plates; (c) triangularly shaped flaps of rigid material, one edge portion of which is connected hingedly and supportively to oppositely extending edge side portions of the rectangular plates, respectively, whereby the rectangular plates may be placed stationarily in inclined positions relative to each other.
Claim 2
Dependent Claim
89 words
A ramp device for practicing wheeled sports thereon, comprising: (a) A plurality of rectangular plates of rigid material, edge portions of which are arranged in juxtaposition to each other; (b) a continuous hinge, extending connectively along and between the juxtaposed edge portions of the rectangular plates; (c) triangularly shaped flaps of rigid material, one edge portion of which is connected hingedly and supportively to oppositely extending edge side portions of the rectangular plates, respectively, whereby the rectangular plates may be placed stationarily in inclined positions relative to each other.
Claim 3
Dependent Claim
31 words
A ramp device, according to claim 1, wherein jointed knee braces are, respectively pivotably mounted to and between the rear sides of the flaps and the underside of the rectangular plates.
References Cited (Backward Citations)
US1232437A
Cited
US1855949A
Cited
US2141529A
Cited
FR939623A
Cited
FR1255035A
Cited
US3663015A
Cited
US3831949A
Cited
US4121821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |