US4293974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arm to blade connector
Assignee: Trico Products Corp
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Filing: 1980-05-19
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Granted: 1981-10-13
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Expires: 2000-05-19
Abstract
Abstract A windshield wiper arm includes a free end which is U-shaped in cross section to form depending ears. The ears include slots open at the free end and detents adjacent the rear edges. The depending ears are received in an opening of the web of the central portion of a channel shaped blade and straddle a flat leaf spring. The open ended slots engage a cross pin extending through the webs of the blade and the detents engage the underside of the flat leaf spring to limit angular displacement of the blade relative to the arm. A pair of shoulders formed on the inner surfaces of the side walls of the blades engage the rear edge of the depending ears to restrict longitudinal movement of the arm relative to the blade.
Inventors
- 👤 Neil A. Gowans
- 👤 William C. Riester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:56
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/40; B60S1/4038; B60S1/4064
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A connector assembly for connecting a windshield wiper arm and a windshield wiper blade, said arm having a free end U-shaped in cross section, forming depending ears, a slot in each of said depending ears, said slot being open at the free end of said arm tip, said wiper blade having a channel-shaped central portion with depending side walls connected by a web at the upper edge of said side walls, elongate longitudinally extending aperture means extending over a central portion of said web for receiving said depending ears and a cross pin exposed to said aperture means for receiving said slots; characterized in that a strike is disposed intermediate the side walls exposed to said aperture means, detent means are positioned on said ears disposed for engagement with said strike, said ears include shoulder means positioned to engage an abutting part of said blade for limiting longitudinal movement of the blade relative to the arm when in operative position.
Claim 2
Dependent Claim
160 words
A connector assembly for connecting a windshield wiper arm and a windshield wiper blade, said arm having a free end U-shaped in cross section, forming depending ears, a slot in each of said depending ears, said slot being open at the free end of said arm tip, said wiper blade having a channel-shaped central portion with depending side walls connected by a web at the upper edge of said side walls, elongate longitudinally extending aperture means extending over a central portion of said web for receiving said depending ears and a cross pin exposed to said aperture means for receiving said slots; characterized in that a strike is disposed intermediate the side walls exposed to said aperture means, detent means are positioned on said ears disposed for engagement with said strike, said ears include shoulder means positioned to engage an abutting part of said blade for limiting longitudinal movement of the blade relative to the arm when in operative position.
Claim 3
Dependent Claim
25 words
A connector assembly according to claim 1 characterized in that said strike comprises a flat leaf spring underlying said cross pin and spanning said aperture.
Claim 4
Dependent Claim
26 words
A connector assembly according to claim 1 characterized in that said detent means comprises a depressed portion on said depending ears extending internally in opposed relation.
Claim 5
Dependent Claim
35 words
A connector assembly according to claim 1 wherein said shoulder means comprises the rear edge of each of said depending ears and said abutting part comprises an internal shoulder on each of said side walls.
Claim 6
Dependent Claim
27 words
A connector assembly according to claim 1 wherein said aperture means comprise a pair of longitudinally extending slots transversely spaced apart, positioned to accomodate said depending ears.
Claim 7
Dependent Claim
40 words
A connector assembly according to claim 1 characterized in that the major portion of said aperture means extends in one direction longitudinally from said pin whereby a blade designed for directional installation can only be installed in the designed direction.
Claim 8
Dependent Claim
29 words
A connector assembly according to claim 1 wherein said aperture extends longitudinally in opposite directions from said pin whereby a symmetrically designed blade can be installed from either direction.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |