Patent US3910388A successfully refreshed from Google Patents.
US3910388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shifter with switches for sequentially operating a transmission and clutch
Assignee: Nissan Motor Co Ltd
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Filing: 1974-05-14
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Granted: 1975-10-07
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Expires: 1994-05-14
Abstract
Abstract Switches which quickly disengage a clutch when a gearshift lever is moved, and engage the clutch when the shifting operation is completed.
Inventors
- 👤 Yooichi Moori
- 👤 Tooji Takemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:05
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/068; F16H; F16H59/00; F16H59/02; F16H59/04; F16H59/044; F16H63/00; F16H63/40; F16H63/46; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/104; F16D2500/10406; F16D2500/10412; F16D2500/30; F16D2500/314; F16D2500/3146; F16D2500/31466; F16D2500/50; F16D2500/502; F16D2500/50239; F16D2500/506; F16D2500/50653; F16D2500/50684; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/70418; F16H59/0217
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
An electric control device to control a clutch of a power transmission having a gearshift lever movable to first, second, third and fourth gear positions, a neutral position and a reverse drive position, said device comprising, in combination, an electric power source, a first switch connected to said electric power source and cooperating with said gearshift lever, said first switch closing when said gearshift lever is moved in one direction, a second switch connected to said first switch and cooperating with said gearshift lever, said Second switch closing when said gearshift lever is moved in another direction, a third switch connected in parallel with said second switch and cooperating with said gearshift lever, said third switch closing when said gearshift lever is moved to one of said second and third gear positions, said neutral position and said reverse drive position, a fourth switch connected in parallel with said first switch and cooperating with said gearshift lever, said fourth switch closing when said gearshift lever is moved to one of said first and third gear positions and said neutral position, and an electric actuator connected to said second and third switches to actuate said clutch of said power transmission.
Claim 2
Dependent Claim
198 words
An electric control device to control a clutch of a power transmission having a gearshift lever movable to first, second, third and fourth gear positions, a neutral position and a reverse drive position, said device comprising, in combination, an electric power source, a first switch connected to said electric power source and cooperating with said gearshift lever, said first switch closing when said gearshift lever is moved in one direction, a second switch connected to said first switch and cooperating with said gearshift lever, said Second switch closing when said gearshift lever is moved in another direction, a third switch connected in parallel with said second switch and cooperating with said gearshift lever, said third switch closing when said gearshift lever is moved to one of said second and third gear positions, said neutral position and said reverse drive position, a fourth switch connected in parallel with said first switch and cooperating with said gearshift lever, said fourth switch closing when said gearshift lever is moved to one of said first and third gear positions and said neutral position, and an electric actuator connected to said second and third switches to actuate said clutch of said power transmission.
Claim 3
Dependent Claim
233 words
An electric control device to control a clutch of a power transmission having a gearshift lever movable to first, second, third, and fourth gear positions, a neutral position and a reverse drive position, said device comprising, in combination, an electric power source, a first switch connected to said electric power source and cooperating with said gearshift lever, said first switch closing when said gearshift lever is moved in one direction, a second switch connected to said electric power source and cooperating with said gearshift lever, said second switch closing when said gearshift lever is moved in another direction, a third switch connected to said first switch and cooperating with said gearshift lever, said third switch closing when said gearshift lever is moved to one of said second and fourth gear positions and said reverse drive position, a fourth switch connected to said second switch and cooperating with said gearshift lever, said fourth switch closing when said gearshift lever is moved to one of said first and third gear positions, a fifth switch connected to said electric power source in parallel with said first and third switches and said second and fourth switches respectively and cooperating with said gearshift lever, said fifth switch closing when said gearshift lever is moved to said neutral position, and an electric actuator connected to said third, fourth and fifth switches to actuate said clutch of said power transmission.
Claim 4
Dependent Claim
233 words
An electric control device to control a clutch of a power transmission having a gearshift lever movable to first, second, third, and fourth gear positions, a neutral position and a reverse drive position, said device comprising, in combination, an electric power source, a first switch connected to said electric power source and cooperating with said gearshift lever, said first switch closing when said gearshift lever is moved in one direction, a second switch connected to said electric power source and cooperating with said gearshift lever, said second switch closing when said gearshift lever is moved in another direction, a third switch connected to said first switch and cooperating with said gearshift lever, said third switch closing when said gearshift lever is moved to one of said second and fourth gear positions and said reverse drive position, a fourth switch connected to said second switch and cooperating with said gearshift lever, said fourth switch closing when said gearshift lever is moved to one of said first and third gear positions, a fifth switch connected to said electric power source in parallel with said first and third switches and said second and fourth switches respectively and cooperating with said gearshift lever, said fifth switch closing when said gearshift lever is moved to said neutral position, and an electric actuator connected to said third, fourth and fifth switches to actuate said clutch of said power transmission.
References Cited (Backward Citations)
US2846036A
Cited
US2945100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |