Patent US4926994A successfully refreshed from Google Patents.
US4926994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic clutch control apparatus
Assignee: Isuzu Motors Ltd
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Filing: 1989-09-12
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Granted: 1990-05-22
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Expires: 2009-09-12
Abstract
Abstract Basic clutch control data is stored in an electronic control unit which controls a clutch actuator. An automatic clutch control apparatus has a setting unit for setting an amount of fine adjustment of an amount or speed of engagement of a clutch. The basic clutch control data is corrected by an amount of fine adjustment set by the setting unit for controlling the operation of the clutch.
Inventors
- 👤 Toshifumi Koshizawa
- 👤 Kiyomi Ohkawa
- 👤 Teruhiko Horiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:31
CPC Classifications
B; B60; B60K; B60K23/00; B60K23/02; F; F16; F16D; F16D48/00; F16D48/06; F16D48/066; F16D2500/00; F16D2500/30; F16D2500/302; F16D2500/3026; F16D2500/31; F16D2500/314; F16D2500/31493; F16D2500/50; F16D2500/501; F16D2500/5018; F16D2500/508; F16D2500/50858; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7042
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: means for automatically determining a basic amount of engagement of the clutch from a position to start engaging the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the automatically determined amount of engagement of the clutch; and control means for controlling an amount of engagement of the clutch based on the automatically determined basic amount of engagement and the manually set amount of fine adjustment.
Claim 2
Dependent Claim
95 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: means for automatically determining a basic amount of engagement of the clutch from a position to start engaging the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the automatically determined amount of engagement of the clutch; and control means for controlling an amount of engagement of the clutch based on the automatically determined basic amount of engagement and the manually set amount of fine adjustment.
Claim 3
Dependent Claim
16 words
An automatic clutch control apparatus according to claim 1, wherein said setting means comprises a potentiometer.
Claim 4
Dependent Claim
18 words
An automatic clutch control apparatus according to claim 1, wherein said setting means comprises a multiple-contact selector switch.
Claim 5
Dependent Claim
95 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: means for automatically determining a basic speed of operation of the clutch actuator from a position to start engaging the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the speed of operation of the clutch actuator; and control means for controlling an amount of operation of the clutch based on the automatically determined basic speed of operation and the manually set amount of fine adjustment.
Claim 6
Dependent Claim
95 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: means for automatically determining a basic speed of operation of the clutch actuator from a position to start engaging the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the speed of operation of the clutch actuator; and control means for controlling an amount of operation of the clutch based on the automatically determined basic speed of operation and the manually set amount of fine adjustment.
Claim 7
Dependent Claim
16 words
An automatic clutch control apparatus according to claim 4, wherein said setting means comprises a potentiometer.
Claim 8
Dependent Claim
18 words
An automatic clutch control apparatus according to claim 4, wherein said setting means comprises a multiple-contact selector switch.
Claim 9
Dependent Claim
130 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: an electronic control unit including means for automatically determining and outputting a control signal indicative of a basic amount of engagement of the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the amount of engagement of the clutch and outputting a setting signal indicative of the set amount of fine adjustment; and means, for comparing the control signal indicative of the basic amount of engagement and the setting signal indicative of the amount of fine adjustment, and means, for determining an adjustment of the basic amount of engagement corresponding to a difference between the setting signal and the control signal.
Claim 10
Dependent Claim
130 words
An automatic clutch control apparatus for controlling a clutch actuator for engaging and disengaging a clutch on a vehicle, comprising: an electronic control unit including means for automatically determining and outputting a control signal indicative of a basic amount of engagement of the clutch based on operating conditions of the vehicle; means for manually setting an amount of fine adjustment of the amount of engagement of the clutch and outputting a setting signal indicative of the set amount of fine adjustment; and means, for comparing the control signal indicative of the basic amount of engagement and the setting signal indicative of the amount of fine adjustment, and means, for determining an adjustment of the basic amount of engagement corresponding to a difference between the setting signal and the control signal.
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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) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |