US3687494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper compression ring
Assignee: Canadian Brass Ltd
•
Filing: 1970-09-14
•
Granted: 1972-08-29
•
Expires: 1990-09-14
Abstract
Abstract A tube coupling consists of an externally threaded body and cooperating nut bearing on an interposed ring which contains a rubber gasket to provide a seal on compression of the ring by the interaction of the body and the nut.
Inventors
- 👤 Elmer Graff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:54
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10; F16L19/12; Y; Y10; Y10S; Y10S285/00; Y10S285/917; Y10S285/918
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
A tube coupling comprising an externally threaded body member enclosing a tube, said body member having a flared mouth, an internally threaded nut having an integral tail, threads on said nut cooperating with the external threads on said body member, said tail and said nut forming an internally camming shoulder, and a ring member of deformable material interposed between said body member and said nut; said ring member having an annulus containing a ring of resilient material maintained in contact with said annulus and a flange formed integrally therewith and embracing said tube in substantially close parallel relationship thereto, said flange embracing said tube so as to be directed axially along said tube toward said flared mouth of said body member so that, on threaded engagement of said nut and said body member, said shoulder of said nut bears against said annulus and said flared mouth bears against said flange so as to deform said flange into intimate contact with said tube and to distort said resilient ring into a sealing relationship with said tube.
Claim 2
Dependent Claim
175 words
A tube coupling comprising an externally threaded body member enclosing a tube, said body member having a flared mouth, an internally threaded nut having an integral tail, threads on said nut cooperating with the external threads on said body member, said tail and said nut forming an internally camming shoulder, and a ring member of deformable material interposed between said body member and said nut; said ring member having an annulus containing a ring of resilient material maintained in contact with said annulus and a flange formed integrally therewith and embracing said tube in substantially close parallel relationship thereto, said flange embracing said tube so as to be directed axially along said tube toward said flared mouth of said body member so that, on threaded engagement of said nut and said body member, said shoulder of said nut bears against said annulus and said flared mouth bears against said flange so as to deform said flange into intimate contact with said tube and to distort said resilient ring into a sealing relationship with said tube.
Claim 3
Dependent Claim
18 words
A tube coupling according to claim 1, wherein the flared mouth has a conical pitch of approximately 20*.
Claim 4
Dependent Claim
23 words
A tube coupling according to claim 1, wherein said ring member interposed between said body member and said nut is made of copper.
Claim 5
Dependent Claim
17 words
A tube coupling according to claim 1, wherein said ring of resilient material is made of rubber.
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) | 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 |