Patent US4469479A successfully refreshed from Google Patents.
US4469479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle derailleur
Assignee: Maeda Industries Ltd
•
Filing: 1982-09-28
•
Granted: 1984-09-04
•
Expires: 2002-09-28
Abstract
Abstract A bicycle derailleur comprises a stationary member to be fixed to a bicycle frame, a first shaft integral with and extending from the stationary member, a spring-biased swing member pivotally supported at one end by the first shaft, a second shaft extending through the swing member at a position spaced apart from the first shaft in parallel relation with respect to the first shaft and in relatively rotatable relation with respect to the swing member, a movable member fixedly connected to and carried by the second shaft, and a restricting mechanism for restricting the second shaft from rotating about its own axis, so that a chain guide, which is operatively supported by the movable member, can move laterally with maintaining a certain constant positional relation with respect to a multi-speed driving gears of a bicycle.
Inventors
- 👤 Nobuo Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:04
CPC Classifications
B; B62; B62M; B62M9/00; B62M9/04; B62M9/06; B62M9/10; B62M9/12; B62M9/121; B62M9/124; B62M9/1244; B62M9/1242
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
A bicycle derailleur comprising a stationary member to be fixed to a bicycle frame, a first shaft integral with and extending from said stationary member, a spring-biased swing member pivotally supported at one end by said first shaft, a second shaft supported by said swing member at a position spaced apart from said first shaft and extending in parallel relation with respect to said first shaft and in relatively rotatable relation with respect to said swing member, a movable member fixedly mounted to said second shaft, a chain guide means carried by said movable member, and a restricting means for restricting said second shaft from rotating about its own axis during pivotal movement of said swing member about said first shaft.
Claim 2
Dependent Claim
121 words
A bicycle derailleur comprising a stationary member to be fixed to a bicycle frame, a first shaft integral with and extending from said stationary member, a spring-biased swing member pivotally supported at one end by said first shaft, a second shaft supported by said swing member at a position spaced apart from said first shaft and extending in parallel relation with respect to said first shaft and in relatively rotatable relation with respect to said swing member, a movable member fixedly mounted to said second shaft, a chain guide means carried by said movable member, and a restricting means for restricting said second shaft from rotating about its own axis during pivotal movement of said swing member about said first shaft.
Claim 3
Dependent Claim
28 words
The derailleur as defined in claim 1, wherein said swing member is substantially box-shaped for housing at least said first and second shafts, and said restricting means therein.
Claim 4
Dependent Claim
34 words
The derailleur as defined in claims 1 or 2, wherein said swing member includes a hollow body having a top wall and an open bottom, and a cover plate for closing said open bottom.
Claim 5
Dependent Claim
19 words
The derailleur as defined in claim 3, wherein said swing member is formed with a control cable guiding means.
Claim 6
Dependent Claim
19 words
The derailleur as defined in claim 4, wherein said swing member is provided with a control cable fixing means.
Claim 7
Dependent Claim
36 words
The derailleur as defined in claims 1 or 2, wherein said restricting means comprises a connecting bar whose one end is linked to said first shaft and whose other end is linked to said second shaft.
Claim 8
Dependent Claim
49 words
The derailleur as defined in claims 1 or 2, wherein said restricting means comprises a first toothed disk rigidly secured to said first shaft, a second toothed disk rigidly secured to said second shaft, and a pinion which is in mesh with both of said first and second disks.
Claim 9
Dependent Claim
29 words
The derailleur as defined in claims 1 or 2, wherein said restricting means comprises an endless member which is in engagement with both of said first and second shafts.
Claim 10
Dependent Claim
27 words
The derailleur as defined in claim 1, wherein an adjustable stopper means is provided for restricting said pivotal movement of said swing member about said first shaft.
Claim 11
Dependent Claim
50 words
The derailleur as defined in claim 9, wherein said adjustable stopper means comprises a first stopper bolt operatively supported by said swing member so as to act upon said first shaft, and a second stopper bolt operatively supported by said swing member so as to act upon said second shaft.
Claim 12
Dependent Claim
26 words
The derailleur as defined in claim 1, wherein said chain guide means is a tensioner having a guide roller and a tension roller rotatably supported thereby.
Claim 13
Dependent Claim
24 words
The derailleur as defined in claim 1, wherein said chain guide means is a chain guide having a pair of spaced, parallel guide plates.
References Cited (Backward Citations)
US3402942A
Cited
US4027542A
Cited
US3979962A
Cited
US4038878A
Cited
US4384864A
Cited
US4406643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |