Patent US4431204A successfully refreshed from Google Patents.
US4431204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front wheel suspension system for motorcycles
Assignee: Honda Motor Co Ltd
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Filing: 1982-06-01
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Granted: 1984-02-14
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Expires: 2002-06-01
Abstract
Abstract A front wheel suspension system for motorcycles which cooperates with a front wheel suspension including an upper fork supported by a motorcycle frame and a lower fork supporting the front wheel. The system includes a rotary lever type damper operatively coupled to the lower fork. The rotary lever type damper is disposed between a pair of side members comprising the upper fork, thus reducing unsprung weight.
Inventors
- 👤 Shinichi Miyakoshi
- 👤 Tokio Isono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/12; B62K25/22; B62K25/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A front wheel suspension system for motorcycles comprising: a motorcycle frame; an upper fork rotatably supported in said frame and comprising a pair of side members; a lower fork supporting a front wheel at one end and coupled at the other end to said upper fork; said lower fork being capable of swinging up and down to allow vertical displacement of said front wheel following irregular road surfaces; said upper and lower forks defining a front wheel suspension; a rotary lever type damper cooperating with said front wheel suspension and operatively coupled to said lower fork; said rotary lever type damper being disposed between said pair of side members; said rotary lever type damper including a case; said case defining a bottom bridge connecting said pair of side members of said upper fork; and said rotary lever type damper being housed within said case defining said bottom bridge.
Claim 2
Dependent Claim
148 words
A front wheel suspension system for motorcycles comprising: a motorcycle frame; an upper fork rotatably supported in said frame and comprising a pair of side members; a lower fork supporting a front wheel at one end and coupled at the other end to said upper fork; said lower fork being capable of swinging up and down to allow vertical displacement of said front wheel following irregular road surfaces; said upper and lower forks defining a front wheel suspension; a rotary lever type damper cooperating with said front wheel suspension and operatively coupled to said lower fork; said rotary lever type damper being disposed between said pair of side members; said rotary lever type damper including a case; said case defining a bottom bridge connecting said pair of side members of said upper fork; and said rotary lever type damper being housed within said case defining said bottom bridge.
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) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |