US4184693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truck for a skateboard
Assignee: LEXIQUE Ltd
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Filing: 1978-05-08
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Granted: 1980-01-22
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Expires: 1998-05-08
Abstract
Abstract In a truck having a base plate for securing to the underside of a skateboard deck, a spring member such as a plate spring is joined to the base plate by one end and carries a wheel axle near an opposite end. The axle-carrying end is flexed away from the base plate to be biassed into engagement with a post secured to the base plate to depend from it. In use, the spring member is adapted to twist about its longitudinal axis whenever the skater shifts his weight on the deck, the spring member riding on the post either directly or through the intermediary of a bearing member.
Inventors
- 👤 Denis H. Whitmarsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:58
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/01; A63C17/011; A63C17/012
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
107 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and a stop means preventing flexure of said plate spring out of engagement with said post.
Claim 2
Dependent Claim
107 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and a stop means preventing flexure of said plate spring out of engagement with said post.
Claim 3
Dependent Claim
113 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second location spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and a bearing member secured to said plate spring at its said opposite end so as to ride on said post.
Claim 4
Dependent Claim
113 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second location spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and a bearing member secured to said plate spring at its said opposite end so as to ride on said post.
Claim 5
Dependent Claim
110 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second location spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and abutments depending from said base plate to serve as stops for limiting twisting of said plate spring.
Claim 6
Dependent Claim
110 words
A truck for a skateboard deck, comprising a base plate for securing to the underside of said deck, a spring member joined to said base plate at a first location by one end and carrying a wheel axle near an opposite end, said spring member comprising a plate spring, a post depending from said base plate at a second location spaced from said first location, said spring member being pre-stressed by its said axle-carrying end being flexed away from said base plate so that it is biassed into engagement with said post, and abutments depending from said base plate to serve as stops for limiting twisting of said plate spring.
Claim 7
Dependent Claim
109 words
A truck for a skateboard deck, comprising a base plate adapted to be secured to the underside of said deck, a plate spring joined by one end to said base plate at a first location, a wheel axle carried by said spring near an opposite end thereof, and a post fixed to depend from said base plate at a second location, said spring being permanently stressed as a result of its said opposite end being flexed away from said base plate out of an unflexed position so that it is permanently biassed towards said post and is held away from said unflexed position by the tip of said post.
Claim 8
Dependent Claim
109 words
A truck for a skateboard deck, comprising a base plate adapted to be secured to the underside of said deck, a plate spring joined by one end to said base plate at a first location, a wheel axle carried by said spring near an opposite end thereof, and a post fixed to depend from said base plate at a second location, said spring being permanently stressed as a result of its said opposite end being flexed away from said base plate out of an unflexed position so that it is permanently biassed towards said post and is held away from said unflexed position by the tip of said post.
Claim 9
Dependent Claim
28 words
The truck as defined in claim 4 including a bearing member secured to said plate spring at its said opposite end so as to ride on said post.
Claim 10
Dependent Claim
25 words
The truck as defined in claim 4, including abutments depending from said base plate to serve as stops for limiting twisting of said plate spring.
Claim 11
Dependent Claim
17 words
The truck as defined in claim 2 or claim 5, wherein said bearing member is of nylon.
Claim 12
Dependent Claim
29 words
The truck as defined in claim 2 or claim 5, wherein said bearing member is a block containing an aperture in which the tip of said post is captive.
Claim 13
Dependent Claim
30 words
The truck as defined in claim 5 or claim 6, including a removable stiffener insert disposed adjacent said plate spring and having locating heels and toes engaged with said abutments.
Claim 14
Dependent Claim
14 words
The truck as defined in claim 4, wherein said plate spring is of polypropylene.
Claim 15
Dependent Claim
21 words
The truck as defined in claim 4, wherein said axle is releasably clamped to said plate spring by a U-shaped strap.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |