Patent US3722931A successfully refreshed from Google Patents.
US3722931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel joint
Assignee: Ishikawa Tekko KK
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Filing: 1971-10-26
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Granted: 1973-03-27
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Expires: 1991-10-26
Abstract
Abstract A swivel joint comprising a stud having an upper cylindrical stem portion, a lower cylindrical stem portion and a substantially spherical member disposed between said upper and lower cylindrical stem portions, an annular upper bearing member and an annular lower bearing member, and a socket receiving therein and supporting said upper and lower bearing members. Said annular upper bearing member and an annular lower bearing member receive therein and support an upper half of said substantially spherical member and said upper cylindrical stem portion contiguous therewith and a lower half of said substantially cylindrical member and said lower cylindrical stem portion contiguous therewith respectively to act as a bearing.
Inventors
- 👤 Y Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:46
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0619; F16C11/0623; F16C11/0628; F16C11/0633; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32778
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
219 words
A swivel joint comprising a stud having an upper cylindrical stem portion, a lower cylindrical stem portion of the same diameter with said upper cylindrical stem portion and a substantially spherical member disposed between said upper and lower cylindrical stem portions; an annular upper bearing member and an annular lower bearing member made of a polyurethane elastomer receiving therein and supporting an upper half of said substantially spherical member and said upper cylindrical stem portion contiguous therewith and a lower half of said substantially spherical member and said lower cylindrical stem portion contiguous therewith respectively to act as a bearing, said upper and lower bearing members having the same configuration; a ring made of a hard plastic and interposed between said upper and lower bearing members to act as a bearing; and a socket receiving therein and supporting said upper and lower bearing members, said socket being formed at one end thereof with an opening for permitting said upper cylindrical stem portion of said stud to extend therethrough and at the other end thereof with an opening which is closed by a closure member in such a way that said upper and lower bearing members are preloaded by said closure member and a gap in which a lubricant is sealed is provided between said bearing members and closure member.
Claim 2
Dependent Claim
219 words
A swivel joint comprising a stud having an upper cylindrical stem portion, a lower cylindrical stem portion of the same diameter with said upper cylindrical stem portion and a substantially spherical member disposed between said upper and lower cylindrical stem portions; an annular upper bearing member and an annular lower bearing member made of a polyurethane elastomer receiving therein and supporting an upper half of said substantially spherical member and said upper cylindrical stem portion contiguous therewith and a lower half of said substantially spherical member and said lower cylindrical stem portion contiguous therewith respectively to act as a bearing, said upper and lower bearing members having the same configuration; a ring made of a hard plastic and interposed between said upper and lower bearing members to act as a bearing; and a socket receiving therein and supporting said upper and lower bearing members, said socket being formed at one end thereof with an opening for permitting said upper cylindrical stem portion of said stud to extend therethrough and at the other end thereof with an opening which is closed by a closure member in such a way that said upper and lower bearing members are preloaded by said closure member and a gap in which a lubricant is sealed is provided between said bearing members and closure member.
Claim 3
Dependent Claim
15 words
The swivel joint of claim 1, wherein said hard plastic ring is made of polyacetal.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |