US3687014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo-steering system for motor vehicles
Assignee: Daimler Benz AG
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Filing: 1971-10-29
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Granted: 1972-08-29
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Expires: 1991-10-29
Abstract
Abstract A servo-steering device for motor vehicles in which a steering spindle part adapted to be connected with the steering wheel is rotatably supported within the steering gear housing while a working piston, drivingly connected with the steering gear output shaft, is displaceably arranged within the housing; at least one seal is arranged between the working piston and the steering spindle part; the steering spindle part is also pivotally supported at least in the housing of the steering gear. The pivotal support includes a bearing race which permits a slight radial movement of the steering spindle such that the steering spindle is both rotatably and pivotally supported in the housing.
Inventors
- 👤 Hans-Joachim M Forster
- 👤 Klaus Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/20; B62D5/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A servo-steering device for motor vehicles comprising a steering gear housing, a steering spindle rotatably supported within said housing, means adjacent one end of said spindle outside of said housing for connecting the spindle to a steering wheel, said spindle being pivotally supported at least at a first support in said housing, a working piston displaceably mounted within said housing, said working piston being drivingly connected with an output shaft of the steering gear for assisting manual turning forces introduced to the steering spindle through the steering wheel, seal means arranged for sealing the spindle with respect to the space between the working piston and the housing, said seal means operatively engaging said spindle at a place spaced from said first support.
Claim 2
Dependent Claim
122 words
A servo-steering device for motor vehicles comprising a steering gear housing, a steering spindle rotatably supported within said housing, means adjacent one end of said spindle outside of said housing for connecting the spindle to a steering wheel, said spindle being pivotally supported at least at a first support in said housing, a working piston displaceably mounted within said housing, said working piston being drivingly connected with an output shaft of the steering gear for assisting manual turning forces introduced to the steering spindle through the steering wheel, seal means arranged for sealing the spindle with respect to the space between the working piston and the housing, said seal means operatively engaging said spindle at a place spaced from said first support.
Claim 3
Dependent Claim
74 words
A servo-steering device according to claim 1, wherein said first support includes ball-bearing means, said ball-bearing means including a first and second set of ball-bearings engaged on opposite sides of a ridge provided on the spindle, said first set being in engagement with a first bearing race fixed to said housing, said second set being in engagement with a second bearing race, and wherein said second bearing race is radially movable within said housing.
Claim 4
Dependent Claim
26 words
A servo-steering device according to claim 2, wherein said second bearing race is disposed outwardly from the first bearing race toward the steering wheel connecting means.
Claim 5
Dependent Claim
49 words
A servo-steering device according to claim 1, wherein said seal means includes at least one seal arranged inside of said housing between the working piston and the steering spindle, said at least one seal being arranged for operatively engaging said spindle at a place spaced from said first support.
Claim 6
Dependent Claim
36 words
A servo-steering device according to claim 1, wherein said seal means comprises seal support means arranged between the working piston and said steering spindle part, said seal support means being pivotally connected with said working piston.
Claim 7
Dependent Claim
16 words
A servo-steering device according to claim 5, wherein said seal support means is of annular shape.
Claim 8
Dependent Claim
37 words
A servo-steering device according to claim 5, wherein said seal support means includes flange means and bearing means threadably connected with said piston and provided with radial groove means, said flange means engaging in said groove means.
Claim 9
Dependent Claim
17 words
A servo-steering device according to claim 7, further comprising additional seal means arranged in said flange means.
Claim 10
Dependent Claim
32 words
A servo-steering device according to claim 8, wherein said seal support means includes sleeve means accommodating therein the first-mentioned seal which is effective between said sleeve means and said steering spindle part.
Claim 11
Dependent Claim
19 words
A servo-steering device according to claim 9, wherein the working piston is substantially concentric to the steering spindle part.
Claim 12
Dependent Claim
32 words
A servo-steering device according to claim 5, wherein Said seal support means includes sleeve means accommodating therein the first-mentioned seal which is effective between said sleeve means and said steering spindle part.
Claim 13
Dependent Claim
19 words
A servo-steering device according to claim 5, wherein the working piston is substantially concentric to the steering spindle part.
Claim 14
Dependent Claim
33 words
A servo-steering device according to claim 12, wherein said seal support means includes sleeve means accommodating therein the first-mentioned seal means which is effective between said sleeve means and said steering spindle part.
Claim 15
Dependent Claim
23 words
A servo-steering device according to claim 1, wherein said first support includes radially movable bearing means for rotatably and pivotally supporting said spindle.
Claim 16
Dependent Claim
36 words
A servo-steering device according to claim 2, wherein said seal means comprises seal support means arranged between the working piston and said steering spindle part, said seal support means being pivotally connected with said working piston.
References Cited (Backward Citations)
US845778A
Cited
US2695203A
Cited
US2765778A
Cited
US3010335A
Cited
US3054136A
Cited
DE1138652B
Cited
DE1139399B
Cited
US3002501A
Cited
US3365253A
Cited
US3457796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |