US4527654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering control system for automotive vehicle or the like
Assignee: Nissan Motor Co Ltd
•
Filing: 1983-03-18
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Granted: 1985-07-09
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Expires: 2003-03-18
Abstract
Abstract A delay which may take the form of a hydraulic flow restriction (either fixed or variable with a given parameter such as vehicle speed) or a suitable electronic delay circuit, is interposed between a device which outputs a signal indicative of the front wheels being steered and a device which is operatively connected with the rear wheels and which varies the orientation of the rear wheels in a manner to "steer" same in response to the signal to control the yawing of the vehicle.
Inventors
- 👤 Yasuji Shibahata
- 👤 Namio Irie
- 👤 Kazuo Ikawa
- 👤 Yohsuke Akatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/06; B62D7/14; B62D7/146; B62D6/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A steering system for a vehicle having a forward wheel, a rear wheel, and a longitudinal axis, comprising: a power steering servomechanism, including a power steering control valve, operatively connected to said front wheel for steering said front wheel in response to a manually-produced steering signal; a rear wheel suspension, including an expandable member having a variable volume chamber in fluid communication with said power steering control valve through a conduit so as to be expanded by a pressure signal produced by said power steering control valve when said front wheel is steered for applying a bias to said rear wheel acting to vary the orientation of said rear wheel with respect to said longitudinal axis; and a flow restrictor interposed in said conduit for modifying said pressure signal produced by said power steering control valve.
Claim 2
Dependent Claim
136 words
A steering system for a vehicle having a forward wheel, a rear wheel, and a longitudinal axis, comprising: a power steering servomechanism, including a power steering control valve, operatively connected to said front wheel for steering said front wheel in response to a manually-produced steering signal; a rear wheel suspension, including an expandable member having a variable volume chamber in fluid communication with said power steering control valve through a conduit so as to be expanded by a pressure signal produced by said power steering control valve when said front wheel is steered for applying a bias to said rear wheel acting to vary the orientation of said rear wheel with respect to said longitudinal axis; and a flow restrictor interposed in said conduit for modifying said pressure signal produced by said power steering control valve.
Claim 3
Dependent Claim
19 words
A steering system as claimed in claim 1, wherein said flow restrictor has an orifice of a predetermined size.
Claim 4
Dependent Claim
18 words
A steering system as claimed in claim 1, wherein said flow restrictor has an orifice of variable size.
Claim 5
Dependent Claim
30 words
A steering system as claimed in claim 3 further comprising a vehicle speed responsive device operatively connected to said flow restrictor for controlling the size of said variable size orifice.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |