Patent US4362522A successfully refreshed from Google Patents.
US4362522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derailleur for a chainwheel assembly for a bicycle
Assignee: Individual
•
Filing: 1979-11-29
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Granted: 1982-12-07
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Expires: 1999-11-29
Abstract
Abstract This invention relates to a chainwheel derailleur for a bicycle, characterized in that at least one of the fingers of the fork member is mounted pivotally on an axis perpendicular to its plane.
Inventors
- 👤 Roger H. M. Huret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:19
CPC Classifications
B; B62; B62M; B62M9/00; B62M9/04; B62M9/06; B62M9/10; B62M9/12; B62M9/131; B62M9/134; B62M9/1344; B62M9/1348; B62M9/1342; B62M9/136
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
A chainwheel derailleur for a bicycle comprising a guide fork member, having two fingers, each of said fingers lying substantially in a plane, and extending on a respective side of the traction drive run of the chain upstream of the chainwheels, the fork member being movable transversely with respect to its plane under the action of an actuating means, characterised in that one at least of the fingers of the fork member is mounted pivotally to rotate about an axis perpendicular to its plane and means is provided for rotating said one of said fingers about its axis in response to the action of the actuating means.
Claim 2
Dependent Claim
107 words
A chainwheel derailleur for a bicycle comprising a guide fork member, having two fingers, each of said fingers lying substantially in a plane, and extending on a respective side of the traction drive run of the chain upstream of the chainwheels, the fork member being movable transversely with respect to its plane under the action of an actuating means, characterised in that one at least of the fingers of the fork member is mounted pivotally to rotate about an axis perpendicular to its plane and means is provided for rotating said one of said fingers about its axis in response to the action of the actuating means.
Claim 3
Dependent Claim
28 words
A derailleur according to claim 1 characterised in that the pivotally mounted finger of the fork member comprises the finger which is most remote from the actuating means.
Claim 4
Dependent Claim
24 words
A derailleur according to claim 1 characterised in that the pivoting finger of the fork member comprises a pivotal portion and a fixed portion.
Claim 5
Dependent Claim
14 words
A derailleur according to claim 1 characterised in that both fingers are mounted pivotally.
Claim 6
Dependent Claim
34 words
A derailleur according to claim 3 characterized in that the pivotal portion of the pivoting finger is connected for actuation thereof to the actuating means which provides for transverse displacement of the fork member.
Claim 7
Dependent Claim
44 words
A derailleur according to claim 5 characterised in that the actuating means providing for transverse displacement of the fork memeber comprises a deformable parallelogram, one of the arms of which is connected by a linkage system to the pivotal finger of the fork member.
Claim 8
Dependent Claim
29 words
A derailleur according to claim 5 characterised in that the connection between the pivotal portion of the pivoting finger and the actuating means is formed by a ramp means.
Claim 9
Dependent Claim
27 words
A derailleur according to claim 7 characterised in that the actuating means comprises a sliding shaft and the ramp means is formed by a helicoidal ramp means.
Claim 10
Dependent Claim
19 words
A derailleur according to claim 8 characterised in that the helicoidal ramp means is formed on the sliding shaft.
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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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |