US4337963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skateboard structure
Assignee: Individual
•
Filing: 1979-08-13
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Granted: 1982-07-06
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Expires: 1999-08-13
Abstract
Abstract A skateboard structure is provided which is formed of a top piece and a bottom piece, the pieces being formed of appropriate injection molded plastic material, such as polypropylene, polyethylene, polycarbonate, "Plexiglass", or other plastic material which is susceptible to injection molding; or aluminum casting or compression molded fiberglass; or any other material which may be molded or cast. The inner surface of each piece is formed with a lattice-work of integral webs, so that when the pieces are fitted together they define a reinforcing honeycomb-like core.
Inventors
- 👤 Richard L. Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/01; A63C17/017
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
In a skateboard which comprises a platform and wheels mounted at each end of the platform, said platform being formed of a top piece and a bottom piece, each of the two pieces having intersecting lattice-work formed integral with the inner surface thereof, said pieces being fitted to one another to cause the lattice work of each piece to be contiguous to one another and to form a reinforcing honeycomb-like cellular core therebetween, a plurality of bushings formed integral with one of the pieces, and a plurality of nipples formed integral with the other of the pieces to be received in the bushings when the pieces are fitted together, and a plurality of screws extending through one of the pieces and through the nipples to be received in corresponding ones of said bushings to hold the two pieces together.
Claim 2
Dependent Claim
139 words
In a skateboard which comprises a platform and wheels mounted at each end of the platform, said platform being formed of a top piece and a bottom piece, each of the two pieces having intersecting lattice-work formed integral with the inner surface thereof, said pieces being fitted to one another to cause the lattice work of each piece to be contiguous to one another and to form a reinforcing honeycomb-like cellular core therebetween, a plurality of bushings formed integral with one of the pieces, and a plurality of nipples formed integral with the other of the pieces to be received in the bushings when the pieces are fitted together, and a plurality of screws extending through one of the pieces and through the nipples to be received in corresponding ones of said bushings to hold the two pieces together.
Claim 3
Dependent Claim
25 words
The skateboard defined in claim 1, in which each of said pieces and the lattice-work integral therewith is formed of an injection molded plastic material.
Claim 4
Dependent Claim
32 words
The skateboard defined in claim 1, in which the top piece has a rim which extends over and encompasses the rim of the bottom piece when the two pieces are fitted together.
Claim 5
Dependent Claim
19 words
The skateboard defined in claim 1, in which said bottom piece defines a longitudinal beam at the bottom thereof.
Claim 6
Dependent Claim
98 words
In a skateboard which comprises a platform and wheels mounted at each end of the platform, said platform being formed of a top piece and a bottom piece, each of the two pieces having intersecting lattice-work formed integral with the inner surface thereof, said pieces being fitted to one another to cause the lattice-work of each piece to be contiguous to one another and to form a reinforcing honeycomb-like cellular core therebetween, and a plurality of screws extending through one of the pieces to be received by the other of the pieces to hold the two pieces together.
Claim 7
Dependent Claim
98 words
In a skateboard which comprises a platform and wheels mounted at each end of the platform, said platform being formed of a top piece and a bottom piece, each of the two pieces having intersecting lattice-work formed integral with the inner surface thereof, said pieces being fitted to one another to cause the lattice-work of each piece to be contiguous to one another and to form a reinforcing honeycomb-like cellular core therebetween, and a plurality of screws extending through one of the pieces to be received by the other of the pieces to hold the two pieces together.
Claim 8
Dependent Claim
19 words
The skateboard defined in claim 5, in which said bottom piece defines a longitudinal beam at the bottom thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |