US4741578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly of composite materials forming a spoke wheel rim
Assignee: Individual
•
Filing: 1985-08-19
•
Granted: 1988-05-03
•
Expires: 2005-08-19
Abstract
Abstract A composite material assembly forming a spoked wheel rim comprising carbon fibers disposed about shock resistant glass or synthetic fiber layers, these layers absorbing the tension exerted by the nuts tightening the spokes and thus providing good cohesion of the assembly forming the rim by compression of the carbon fibers situated between the heads of the nuts and the rings.
Inventors
- 👤 Paul-Henri Viellard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
B; B60; B60B; B60B1/00; B60B1/003; B60B5/00; B60B5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A spoke wheel rim assembly made of light composite material which comprises: (a) a rim portion made of carbon fibers embedded in harden resins, (b) at least a pair of shock resistant layers, one of said layers being embedded within said rim portion and another of said layers on an outer surface of said rim portion, (c) spokes extending through said rim portion, and (d) nut heads for tightening said spokes and pressing on said embedded shock resistant layer to pinch the carbon fibers between said layers to provide a good cohesion of the assembly even if the carbon fibers are broken.
Claim 2
Dependent Claim
102 words
A spoke wheel rim assembly made of light composite material which comprises: (a) a rim portion made of carbon fibers embedded in harden resins, (b) at least a pair of shock resistant layers, one of said layers being embedded within said rim portion and another of said layers on an outer surface of said rim portion, (c) spokes extending through said rim portion, and (d) nut heads for tightening said spokes and pressing on said embedded shock resistant layer to pinch the carbon fibers between said layers to provide a good cohesion of the assembly even if the carbon fibers are broken.
Claim 3
Dependent Claim
16 words
The spoke wheel rim as claimed in claim 1 wherein said layers are made of metal.
Claim 4
Dependent Claim
17 words
The spoke wheel rim as claimed in claim 1 wherein said layers are made of glass fibers.
Claim 5
Dependent Claim
17 words
The spoke wheel rim as claimed in claim 1 wherein said layers are made of synthetic fibers.
Claim 6
Dependent Claim
16 words
The spoke wheel rim as claimed in claim 1 wherein said layers have a flat profile.
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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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |