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US3633933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering mechanism for motor vehicles
Assignee: Adwest Engineering Ltd
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Filing: 1970-02-02
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Granted: 1972-01-11
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Expires: 1990-02-02
Abstract
Abstract A motor vehicle steering mechanism having a first toothed rack with at least one end connectable to two steerable road wheels of the vehicle. A first pinion engages the teeth of this rack. There is a second toothed rack with a second pinion engaging its teeth. A transmission connects together the first and second pinion and a third pinion engaging the teeth of the second toothed rack is mounted on an input member. The first rack and the steerable wheels are thus controlled from the input member.
Inventors
- 👤 Barry John Millard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:27
CPC Classifications
B; B62; B62D; B62D3/00; B62D3/02; B62D3/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
A motor vehicle steering mechanism comprising: a first toothed rack having at least one of its ends adapted to be connected to two steerable road wheels of a motor vehicle; a first pinion engaging the teeth of said first rack; a second toothed rack; a second pinion engaging the teeth of said second toothed rack; a transmission connecting together said first and second pinions, and a third pinion engaging the teeth of said second toothed rack and mounted on an input member, whereby said first rack and steerable wheels are controlled from said input member.
Claim 2
Dependent Claim
95 words
A motor vehicle steering mechanism comprising: a first toothed rack having at least one of its ends adapted to be connected to two steerable road wheels of a motor vehicle; a first pinion engaging the teeth of said first rack; a second toothed rack; a second pinion engaging the teeth of said second toothed rack; a transmission connecting together said first and second pinions, and a third pinion engaging the teeth of said second toothed rack and mounted on an input member, whereby said first rack and steerable wheels are controlled from said input member.
Claim 3
Dependent Claim
22 words
A steering mechanism according to claim 1, wherein said first rack is mounted directly on a vehicle axle and parallel to it.
Claim 4
Dependent Claim
18 words
A steering mechanism according to claim 1, wherein said second rack lies substantially parallel to said first rack.
Claim 5
Dependent Claim
29 words
A steering mechanism according to claim 1, wherein said transmission is constituted by a coupling shaft upon the opposite ends of which said first and second pinions are mounted.
Claim 6
Dependent Claim
18 words
A steering mechanism according to claim 1, wherein said coupling shaft is split and includes a universal joint.
Claim 7
Dependent Claim
18 words
A steering mechanism according to claim 1, wherein said coupling shaft is split and includes a sliding joint.
Claim 8
Dependent Claim
29 words
A steering Mechanism according to claim 1, wherein said third pinion has fewer teeth than said second pinion so as to increase the steering ratio of the steering mechanism.
Claim 9
Dependent Claim
37 words
A steering mechanism according to claim 1, which is fitted in a motor vehicle which has a rigid axle fitted with steerable road wheels at its ends, said first rack being mounted directly on the front axle.
Claim 10
Dependent Claim
17 words
A steering mechanism according to claim 1, further comprising power assistance means associated with said first rack.
Claim 11
Dependent Claim
19 words
A steering mechanism according to claim 1 which is fitted to a motor vehicle which has independent front suspension.
References Cited (Backward Citations)
FR1194066A
Cited
US1872714A
Cited
GB451813A
Cited
US2859628A
Cited
US3298708A
Cited
US3279813A
Cited
DE1933402A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |