US4386521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator for lock-up state of lock-up type automatic transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1981-08-10
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Granted: 1983-06-07
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Expires: 2001-08-10
Abstract
Abstract An indicator system includes an indicator mounted near a driver's seat and arranged to be responsive to a lock-up permission signal which is to appear when the vehicle is operating within a lock-up range.
Inventors
- 👤 Hideo Hamada
- 👤 Yoshiro Morimoto
- 👤 Masaaki Suga
- 👤 Masaaki Futagi
- 👤 Tadashi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/14; F16H61/143
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
An indicator system for a lock-up type automatic transmission for an automotive vehicle, the lock-up type automatic transmission including means for generating a lock-up permission signal, means for generating a gear shifting signal representing that a gear shift is made within the automatic transmission, and means for causing the lock-up type automatic transmission to operate in a lock-up state when the lock-up permission signal is generated unless the gear shifting signal is generated and for temporarily suspending the lock-up state to cause the lock-up type automatic transmission to operate in a converter state in response to the gear shifting signal even if the lock-up permission signal is generated, the indicator system comprising: an indicator; and means for energizing said indicator in response to said lock-up permission signal.
Claim 2
Dependent Claim
127 words
An indicator system for a lock-up type automatic transmission for an automotive vehicle, the lock-up type automatic transmission including means for generating a lock-up permission signal, means for generating a gear shifting signal representing that a gear shift is made within the automatic transmission, and means for causing the lock-up type automatic transmission to operate in a lock-up state when the lock-up permission signal is generated unless the gear shifting signal is generated and for temporarily suspending the lock-up state to cause the lock-up type automatic transmission to operate in a converter state in response to the gear shifting signal even if the lock-up permission signal is generated, the indicator system comprising: an indicator; and means for energizing said indicator in response to said lock-up permission signal.
Claim 3
Dependent Claim
23 words
An indicator system as claimed in claim 1, wherein said energizing means includes a NOT gate and a delay circuit connected in series.
Claim 4
Dependent Claim
47 words
An indicator system as claimed in claim 1, wherein said energizing means includes an AND gate means responsive to said gear shifting signal and said lock-up permission signal, an OR gate means connected with said AND gate and a delay circuit connected to said OR gate means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |