US3790985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiper arrangement for windshields and the like
Assignee: Robert Bosch GmbH
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Filing: 1972-06-12
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Granted: 1974-02-12
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Expires: 1992-06-12
Abstract
Abstract A bushing is to be mounted in a wall of the vehicle, and the wiper assembly is journalled in the bushing for oscillatory rotation. The assembly includes an arm which carries a wiper blade, and which is in turn mounted on a shaft journalled in the bushing. A sealing device is provided to prevent the entry of contaminants at the axial end of the bushing from which the shaft extends to the arm. The sealing device is in form of a sleeve of elastomeric or similar material with one end of the sleeve surrounding the axial end of the bushing and being connected therewith, and the other end surrounding the shaft and being connected with the latter in the region of the arm, or with the hub of the arm itself, in such a manner that the sleeve will tend to follow the rotation of the shaft and flex in response to such rotation.
Inventors
- 👤 P Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:47
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/34; B60S1/3425; B60S1/3445; B60S1/3459; B60S1/3488; B60S1/349; B60S1/3479; B60S1/3481
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
In a wiper arrangement for windshields and the like, in combination, a bushing adapted to be mounted in a structural element of a vehicle; a wiper assembly, including a shaft journalled in said bushing for oscillatory rotation and having a projecting portion extending beyond an axial end of said bushing, a wiper arm movable with said shaft and including a hub mounted on the same, and a wiper blade carried by said wiper arm; and means for preventing the entry of contaminants at said axial end of said bushing, said means comprising a sealing component sealingly engaging said bushing and having a resiliently deformable portion surrounding said axial end and said projecting portion of said shaft, and a fastening portion fastening said deformable portion to said hub so that said deformable portion undergoes resilient deformation in response to oscillatory rotation of said wiper assembly.
Claim 2
Dependent Claim
144 words
In a wiper arrangement for windshields and the like, in combination, a bushing adapted to be mounted in a structural element of a vehicle; a wiper assembly, including a shaft journalled in said bushing for oscillatory rotation and having a projecting portion extending beyond an axial end of said bushing, a wiper arm movable with said shaft and including a hub mounted on the same, and a wiper blade carried by said wiper arm; and means for preventing the entry of contaminants at said axial end of said bushing, said means comprising a sealing component sealingly engaging said bushing and having a resiliently deformable portion surrounding said axial end and said projecting portion of said shaft, and a fastening portion fastening said deformable portion to said hub so that said deformable portion undergoes resilient deformation in response to oscillatory rotation of said wiper assembly.
Claim 3
Dependent Claim
35 words
In an arrangement as defined in claim 1, said hub having a bore for said projecting shaft portion, and a collar surrounding said bore; and wherein said fastening portion is annular and engages said collar.
Claim 4
Dependent Claim
20 words
In an arrangement as defined in claim 1, said sealing component being tubular and having a resiliently flexible circumferential wall.
Claim 5
Dependent Claim
25 words
In an arrangement as defined in claim 1, said sealing component being of a resiliently flexible material which is at least resistant to lubricating agents.
Claim 6
Dependent Claim
33 words
In an arrangement as defined in claim 1, said sealing component being tubular and having opposite open ends, and resiliently distendable annular reinforcing ribs provided at the respective ends encircling the openings thereof.
Claim 7
Dependent Claim
38 words
In an arrangement as defined in claim 5, said bushing and said wiper assembly each having at least one circumferential groove; and wherein said annular reinforcing ribs are each received in distended condition in one of said grooves.
Claim 8
Dependent Claim
43 words
In an arrangement as defined in claim 5, said sealing component having a resiliently deformable circumferential wall, and a plurality of circumferentially offset elongated reinforcing ribs extending longitudinally of said tubular sealing component from one to the other of said annular reinforcing ribs.
Claim 9
Dependent Claim
26 words
In an arrangement as defined in claim 7, said circumferential wall having an inner side, and said elongated reinforcing ribs being provided on said inner side.
Claim 10
Dependent Claim
22 words
In an arrangement as defined in claim 7, wherein said wall constitutes intermediate said reinforcing ribs a readily foldable and flexible skin.
Claim 11
Dependent Claim
24 words
In an arrangement as defined in claim 5, said tubular sealing component having intermediate said annular reinforcing ribs at least one circumferentially extending corrugation.
Claim 12
Dependent Claim
32 words
In an arrangement as defined in claim 7, said circumferentIal wall being provided intermediate at least two circumferentially adjacent ones of said elongated reinforcing ribs with at least one longitudinally extending corrugation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |