Patent US4073500A successfully refreshed from Google Patents.
US4073500A
Expired / Lapsed
US
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Wheel board undulating coaster
Assignee: CAMPEAU LEO
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Filing: 1976-08-24
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Granted: 1978-02-14
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Expires: 1996-08-24
Abstract
Abstract This disclosure pertains to a rigid board-like surface having three casters affixed to the undermost surface thereof. Two of the casters are disposed in spaced apart relationship and co-axially aligned at one end of the board. The remaining caster is located at the other end of the board. Each caster utilizes an eccentric wheel, causing the board to undulate when rolling down an inclined surface. An inverted U-shaped rail is affixed to the uppermost surface of the board to which is attached a rope-like cord utilized to provide a grasp for the user of the apparatus.
Inventors
- 👤 Leo Campeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:40
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/0033; A63C17/0073; A63C17/01; A63C17/014; A63C17/26; A63C17/265
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A wheel board undulating coaster comprising a generally planar platform, three ground contacting wheels mounted for rotation on the underside of the platform and positioned in a triangular arrangement, means for mounting one of the three wheels for swiveling movement about a vertical axis normal to the axis of rotation thereof, and all three wheels having peripheral surfaces eccentric to the axes of rotation thereof, a generally U-shaped support member, said support member affixed on the uppermost side of the platform, the free ends of the U-shaped member being disposed fixedly secured to said uppermost side of said platform, said platform having a generally rectangular shape, said free ends being disposed adjacent diametrically opposed corners of said platform.
Claim 2
Dependent Claim
118 words
A wheel board undulating coaster comprising a generally planar platform, three ground contacting wheels mounted for rotation on the underside of the platform and positioned in a triangular arrangement, means for mounting one of the three wheels for swiveling movement about a vertical axis normal to the axis of rotation thereof, and all three wheels having peripheral surfaces eccentric to the axes of rotation thereof, a generally U-shaped support member, said support member affixed on the uppermost side of the platform, the free ends of the U-shaped member being disposed fixedly secured to said uppermost side of said platform, said platform having a generally rectangular shape, said free ends being disposed adjacent diametrically opposed corners of said platform.
Claim 3
Dependent Claim
22 words
The device as claimed in claim 1 further comprising a line, a portion of said line being disposed tied to said member.
Claim 4
Dependent Claim
43 words
The device as claimed in claim 1 wherein the other two of said three wheels are disposed having a common axis of rotation, said common axis of rotation being disposed adjacent and parallel to one of the shorter marginal edges of said platform.
References Cited (Backward Citations)
US2198667A
Cited
US3152813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |