US4299582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain drive for motorcycle rear wheels carried by swing arms
Assignee: Individual
•
Filing: 1979-03-02
•
Granted: 1981-11-10
•
Expires: 1999-03-02
Abstract
Abstract A chain drive is proposed for motorcycle rear wheels carried by swing arms. The chain is deflected by means which are rigidly secured to a swing arm carrying the rear wheel so that the resiliency of the rear wheel suspension is independent of the forces exerted by the chain during an acceleration and deceleration of the motor.
Inventors
- 👤 Horst Leitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:09
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/28; B62K25/283; B62M; B62M9/00; B62M9/16; F; F16; F16H; F16H7/00; F16H7/08; F16H2007/0863; F16H2007/0874
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
140 words
A chain drive for motorcycle rear wheels carried by swing arms mounted on a frame by a swing arm bearing, comprising a swing arm is pivotally mounted on the swing arm bearing on the frame, a rear wheel chain sprocket is disposed on said swing arm, two chain-deflecting means at least in part are rigidly secured to said swing arm and are spaced apart substantially directly above and below the swing arm bearing respectively on both sides thereof, a drive chain having upper and lower courses trained around both of said chain-deflection means at contact points therewith, said chain-deflecting means are aligned relative to said swing arm bearing such that an imaginary line between said contact points of said upper and lower courses of said drive chain with said two chain-deflecting means respectively substantially passes through said swing arm bearing.
Claim 2
Dependent Claim
140 words
A chain drive for motorcycle rear wheels carried by swing arms mounted on a frame by a swing arm bearing, comprising a swing arm is pivotally mounted on the swing arm bearing on the frame, a rear wheel chain sprocket is disposed on said swing arm, two chain-deflecting means at least in part are rigidly secured to said swing arm and are spaced apart substantially directly above and below the swing arm bearing respectively on both sides thereof, a drive chain having upper and lower courses trained around both of said chain-deflection means at contact points therewith, said chain-deflecting means are aligned relative to said swing arm bearing such that an imaginary line between said contact points of said upper and lower courses of said drive chain with said two chain-deflecting means respectively substantially passes through said swing arm bearing.
Claim 3
Dependent Claim
36 words
A chain drive according to claim 1, characterized in that the distance between the chain-engaging surfaces of the chain-deflecting means is substantially as large as the diameter of the chain sprocket secured to the rear wheel.
Claim 4
Dependent Claim
21 words
A chain drive according to claim 1 or 2, wherein at least one of the chain-deflecting means comprise a slideway member.
Claim 5
Dependent Claim
17 words
A chain drive according to claim 1 or 2, wherein said chain-deflecting means comprise rotatably mounted wheels.
Claim 6
Dependent Claim
56 words
A chain drive according to claim 4, characterized in that the chain-deflecting means comprising two chain sprockets, which are symmetrical to the swing arm bearing and have axes lying on a plane which is at right angles to the longitudinal direction of the swing arm and which contains also the axis of the swing arm bearing.
Claim 7
Dependent Claim
41 words
A motorcycle having a rear wheel carried by swing arms, including a chain drive according to claims 1, 2 or 5 further comprising the frame and swing arm bearing mounted on the frame and motor means for driving said drive chain.
Claim 8
Dependent Claim
13 words
A chain drive according to claim 4, wherein said wheels comprise chain sprockets.
Claim 9
Dependent Claim
17 words
The chain drive according to claims 1 or 5, wherein the drive chain forms substantially a parallelogram.
Claim 10
Dependent Claim
31 words
The chain drive as set forth in claim 1, wherein each of said chain-deflecting means respectively press said upper and lower courses of the drive chain outwardly apart from one another.
Claim 11
Dependent Claim
51 words
A drive chain according to claim 1, comprising a member rigidly connected to said swing arm, said chain-deflecting means are mounted on said member spaced apart from one another between the upper and lower courses of said drive chain and pressing said upper and lower courses outwardly apart from one another.
Claim 12
Dependent Claim
40 words
A chain drive according to claim 2, further comprising said chain-deflecting means include, mounting arms rigidly connected with said swing arm, said mounting arms are pivotable about said swing arm bearing, chain contact members mounted on said mounting arms, respectively.
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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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |