US5267629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary steering system for a vehicle
Assignee: Nissan Motor Co Ltd
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Filing: 1992-06-01
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Granted: 1993-12-07
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Expires: 2012-06-01
Abstract
Abstract An auxiliary steering system for a vehicle is adapted to additionally steer the front wheels and/or rear wheels of a vehicle upon the main steering of the front wheels by a steering maneuver of a steering wheel, while an auxiliary steer angle is determined in accordance with a differential value of a main steer angle of the front wheels. An auxiliary steering system further includes a limiter means adapted to restrict an upper limit of the differential value in accordance with a main steer speed or in accordance with both of the main steer speed and the main steer angle, whereby the auxiliary steer angle does not become too large and a jerk of the vehicle is prevented even if the main steer speed is high, while within a large main steer angle range the auxiliary steer angle is not suppressed and remains capable of compensating for a lowering of a tire cornering power.
Inventors
- 👤 Hiroshi Mouri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:23
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/06; B62D7/14; B62D7/15; B62D7/159; B62D6/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
An auxiliary steering system for additionally steering front wheels and/or rear wheels of a vehicle upon main steering of the front wheels by steering maneuver of a steering wheel, an auxiliary steer angle of the front wheels and/or rear wheels to be steered in addition to said main steering of the front wheels being determined on the basis of a differential value of a main steer angle of the front wheels, comprising: a limiter for restricting an upper limit of said differential value of the main steer angle of the front wheels as a first order differential value of the main steer angle of the front wheels increases.
Claim 2
Dependent Claim
108 words
An auxiliary steering system for additionally steering front wheels and/or rear wheels of a vehicle upon main steering of the front wheels by steering maneuver of a steering wheel, an auxiliary steer angle of the front wheels and/or rear wheels to be steered in addition to said main steering of the front wheels being determined on the basis of a differential value of a main steer angle of the front wheels, comprising: a limiter for restricting an upper limit of said differential value of the main steer angle of the front wheels as a first order differential value of the main steer angle of the front wheels increases.
Claim 3
Dependent Claim
32 words
An auxiliary steering system for a vehicle as set forth in claim 1, wherein said differential value is a first order differential value of the main steer angle of the front wheels.
Claim 4
Dependent Claim
119 words
An auxiliary steering system for additionally steering front wheels and/or rear wheels of a vehicle upon main steering of the front wheels by steering maneuver of a steering wheel, an auxiliary steer angle of the front wheels and/or rear wheels to be steered in addition to said main steering of the front wheels being determined on the basis of a differential value of a main steer angle of the front wheels, comprising: a limiter for restricting an upper limit of said differential value of the main steer angle of the front wheels as a first order differential value of the main steer angle of the front wheels becomes higher and the main steer angle of the front wheels decreases.
Claim 5
Dependent Claim
119 words
An auxiliary steering system for additionally steering front wheels and/or rear wheels of a vehicle upon main steering of the front wheels by steering maneuver of a steering wheel, an auxiliary steer angle of the front wheels and/or rear wheels to be steered in addition to said main steering of the front wheels being determined on the basis of a differential value of a main steer angle of the front wheels, comprising: a limiter for restricting an upper limit of said differential value of the main steer angle of the front wheels as a first order differential value of the main steer angle of the front wheels becomes higher and the main steer angle of the front wheels decreases.
Claim 6
Dependent Claim
32 words
An auxiliary steering system for a vehicle as set forth in claim 3, wherein said differential value is a first order differential value of the main steer angle of the front wheels.
References Cited (Backward Citations)
US4757869A
Cited
JPS63251374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |