US4560023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power assisted steering gear
Assignee: Ford Motor Co
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Filing: 1984-07-12
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Granted: 1985-12-24
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Expires: 2004-07-12
Abstract
Abstract A rack and pinion steering gear mechanism for a wheeled vehicle comprising an input shaft, a rotary fluid pressure control valve and a drive pinion for a rack wherein the pinion is located between the input shaft and the valve and wherein the pinion has a central opening for receiving therethrough a valve actuator rod and a torsion bar that connects the input shaft to the pinion.
Inventors
- 👤 Ian G. Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:15
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/20; B62D5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A power assisted steering gear having a pinion meshing with a steering rack, an input shaft and a control valve for controlling the flow of hydraulic fluid which, in use, moves the rack, the pinion and rack being positioned between the input shaft and the valve, the pinion being hollow and accommodating a torsion bar, the steering gear further comprising an input shaft extension which connects the input shaft to the valve, one end of the torsion bar being rotationally fast with respect to the input shaft and the other end being rotationally fast with respect to the pinions, the torsion bar being tubular, and the input shaft extension passing through the torsion bar.
Claim 2
Dependent Claim
114 words
A power assisted steering gear having a pinion meshing with a steering rack, an input shaft and a control valve for controlling the flow of hydraulic fluid which, in use, moves the rack, the pinion and rack being positioned between the input shaft and the valve, the pinion being hollow and accommodating a torsion bar, the steering gear further comprising an input shaft extension which connects the input shaft to the valve, one end of the torsion bar being rotationally fast with respect to the input shaft and the other end being rotationally fast with respect to the pinions, the torsion bar being tubular, and the input shaft extension passing through the torsion bar.
References Cited (Backward Citations)
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Cited
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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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |