US3751078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joints
Assignee: Individual
•
Filing: 1971-08-26
•
Granted: 1973-08-07
•
Expires: 1991-08-26
Abstract
Abstract The invention provides a spigot and joint wherein an internal sealing ring between the spigot and joint is retained in position by an insertable latched ring. In another modification the sealing ring is retained in position between the spigot and socket members by a gland ring and separate wedges. Axial displacement of the gland ring to compress the sealing ring is achieved by disposing the wedges between a beveled lug at the mouth of the socket and a lug on the outer face of the gland ring.
Inventors
- 👤 Brian J O
- 👤 B Finnimore
- 👤 D Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:19
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/04; Y; Y10; Y10S; Y10S285/00; Y10S285/921
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
A spigot and socket joint construction wherein the spigot is located in the socket, the construction including a resilient sealing ring surrounding the spigot within the socket and means for retaining the sealing ring in this position, the retaining means comprising a gland ring surrounding the spigot within the socket and engaging the sealing ring, circumferentially spaced radially inward lugs on the open end of the socket, each lug having a ramp on its axially inward face, circumferentially spaced radially outward lugs on the gland ring equal in number to the socket lugs and each shorter than the socket lug spacing and wedges, each located between a socket lug and a corresponding gland ring lug and displaceable circumferentially and having one face engaging the gland ring lug and an inclined face engaging the ramp of the corresponding socket lug so that circumferential displacement of the wedges causes axial displacement of the gland ring.
Claim 2
Dependent Claim
153 words
A spigot and socket joint construction wherein the spigot is located in the socket, the construction including a resilient sealing ring surrounding the spigot within the socket and means for retaining the sealing ring in this position, the retaining means comprising a gland ring surrounding the spigot within the socket and engaging the sealing ring, circumferentially spaced radially inward lugs on the open end of the socket, each lug having a ramp on its axially inward face, circumferentially spaced radially outward lugs on the gland ring equal in number to the socket lugs and each shorter than the socket lug spacing and wedges, each located between a socket lug and a corresponding gland ring lug and displaceable circumferentially and having one face engaging the gland ring lug and an inclined face engaging the ramp of the corresponding socket lug so that circumferential displacement of the wedges causes axial displacement of the gland ring.
Claim 3
Dependent Claim
26 words
A spigot and socket joint construction as claimed in claim 1, said axially inward face of each lug having two ramps inclined in opposite directions circumferentially.
References Cited (Backward Citations)
CA735754A
Cited
US1588444A
Cited
US1474437A
Cited
US2145645A
Cited
US2992839A
Cited
FR1250879A
Cited
US3480302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |