Patent US3695650A successfully refreshed from Google Patents.
US3695650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball joint for omni-directional motion attachments
Assignee: TRW Fahrwerksysteme GmbH and Co KG
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Filing: 1970-09-22
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Granted: 1972-10-03
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Expires: 1990-09-22
Abstract
Abstract A ball joint having a ball element surrounded by a pair of ball cups of plastic material which are friction welded along the equator of the ball element and having a sleeve surrounding the ball cups.
Inventors
- 👤 Klaus Stuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:24
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; B; B60; B60G; B60G7/00; B60G7/005; F16C2326/00; F16C2326/01; F16C2326/05; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32778
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A ball and socket joint unit comprising: a. a ball element, b. a pair of ball cup members surrounding said ball element, said ball cup members being of weldable resilient plastic material, and having mating surfaces, said mating surfaces being bonded together by a friction weld, c. an open ended cylindrical sleeve surrounding said ball cup members so as to expose the entire end face of each cup member to provide maximum gripping surfaces for rotary tools, and d. hollow trunnion extensions on said ball element extending coaxially from each end of said ball element, said trunnion extensions each having an outer cylindrical surface which extends substantially normal to said end faces whereby said trunnion extensions extend a sufficient distance from said ball element to provide a guide surface for the rotary tools acting on said end faces.
Claim 2
Dependent Claim
138 words
A ball and socket joint unit comprising: a. a ball element, b. a pair of ball cup members surrounding said ball element, said ball cup members being of weldable resilient plastic material, and having mating surfaces, said mating surfaces being bonded together by a friction weld, c. an open ended cylindrical sleeve surrounding said ball cup members so as to expose the entire end face of each cup member to provide maximum gripping surfaces for rotary tools, and d. hollow trunnion extensions on said ball element extending coaxially from each end of said ball element, said trunnion extensions each having an outer cylindrical surface which extends substantially normal to said end faces whereby said trunnion extensions extend a sufficient distance from said ball element to provide a guide surface for the rotary tools acting on said end faces.
Claim 3
Dependent Claim
24 words
A ball and socket joint as defined in claim 1 wherein said extensions have a central bore extending therethrough and through said ball element.
Claim 4
Dependent Claim
30 words
A ball and socket joint as defined in claim 1 wherein said ball cups are substantially symmetrical and said mating surfaces are substantially along the equator of said ball element.
References Cited (Backward Citations)
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |