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US4879919A
Expired / Lapsed
US
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Transmission equipped with reverse mechanism
Assignee: Honda Motor Co Ltd
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Filing: 1987-08-07
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Granted: 1989-11-14
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Expires: 2007-08-07
Abstract
Abstract A transmission having a reverse mechanism for use in an automotive vehicle which includes a forward shift drum both ends of which are rotatably supported by an engine case, and a reverse shift drum concentrically arranged with the forward shift drum and relatively rotatably fitted to the peripheral surface of the forward shift drum. This transmission comprises a first rotation positioning mechanism provided on one end portion of the foward shift drum and adapted to regulate a rotary position of the drum, and a second rotation positioning mechanism provided on the reverse shift drum at an end portion thereof opposite to the one end portion and adapted to regulate a rotary position of the reverse shift drum. These first and second rotation positioning mechanisms are disposed at the outer side of the engine case respectively.
Inventors
- 👤 Satoshi Sekizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:46
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/302; F16H63/08; F16H63/16; F16H63/18; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19279
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A transmission having a reverse mechanism including a forward shift drum both ends of which are rotatably supported by an engine case, and a reverse shift drum concentrically arranged with said forward shift drum and relatively rotatably fitted to the peripheral surface of said forward shift drum, said transmission comprising a first rotation positioning mechanism provided on one end portion of said forward shift drum for regulating a rotary position of said forward shift drum; and a second rotation positioning mechanism provided on said reverse shift drum at an end portion thereof opposite to said one end portion for regulating a rotary position of said reverse shift drum; said first and second rotation positioning mechanisms being disposed at an outer side of said engine case, respectively.
Claim 2
Dependent Claim
126 words
A transmission having a reverse mechanism including a forward shift drum both ends of which are rotatably supported by an engine case, and a reverse shift drum concentrically arranged with said forward shift drum and relatively rotatably fitted to the peripheral surface of said forward shift drum, said transmission comprising a first rotation positioning mechanism provided on one end portion of said forward shift drum for regulating a rotary position of said forward shift drum; and a second rotation positioning mechanism provided on said reverse shift drum at an end portion thereof opposite to said one end portion for regulating a rotary position of said reverse shift drum; said first and second rotation positioning mechanisms being disposed at an outer side of said engine case, respectively.
Claim 3
Dependent Claim
21 words
The transmission as claimed in claim 1, wherein an exterior of said rotation positioning mechanisms is covered with a cover respectively.
Claim 4
Dependent Claim
104 words
The transmission as claimed in claim 1, wherein said rotation positioning mechanism of said reverse shift drum comprises a connecting member secured to an end portion of said reverse shift drum and having a boss projecting outwards of said engine case piercing through an arcuate through hole formed in the engine case; a positioning member secured to an external end of said boss and provided on peripheral surface thereof with a depressed reverse positioning portion and a depressed neutral positioning portion; and a positioning arm swingably mounted on said engine case and selectively engaged with said reverse positioning portion and said neutral positioning portion.
Claim 5
Dependent Claim
37 words
The transmission as claimed in claim 3, wherein said rotation positioning mechanism of said reverse shift drum includes a reverse lock adapted to lock said positioning member when said reverse shift drum is in the neutral position.
Claim 6
Dependent Claim
41 words
The transmission as claimed in claim 3, wherein said reverse shift drum and said connecting member have an outer race of a ball bearing held therebetween, and an inner race of said ball bearing is secured to said forward shift drum.
References Cited (Backward Citations)
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |