US3196897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling with compressible packing
Assignee: Mannin Engineering Ltd
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Filing: 1962-10-15
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Granted: 1965-07-27
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hodson Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:56
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/32; F16L37/22; F16L37/23; Y; Y10; Y10T; Y10T137/00; Y10T137/5762; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A SELF-SEALING PIPE COUPLING COMPRISING A SOCKET TERMINAL AND A COMPLEMENTAL SPIGOT TERMINAL EACH FORMED WITH A VALVE SEAT, A VALVE IN EACH TERMINAL RESILIENTLY URGED TOWARDS ITS SEAT, AND SEATING THEREON WHEN THE TERMINALS ARE NOT COUPLED TOGETHER, TO PREVENT LOSS OF FLUID SAID BEING RELATIVELY OF SUCH LENGTH AS TO MUTUALLY ENGAGE AND BE FORCED OFF THEIR RESPECTIVE SEATS WHEN THE TERMINALS ARE COUPLED TOGETHER, AND A MEMBER OF RESILIENT FLUID-ABSORBING MATERIAL CARRIED BY THE SOCKET TERMINAL INTERMEDIATE THE TWO VALVE SEATS, SAID MEMBER BEING OF A THICKNESS TO BE COMPRESSED BETWEEN THE TERMINALS WHEN THEY ARE COUPLED TOGETHER, AND TO EXPAND INTO THE SPACE BETWEEN THE VALVES AS THE TERMINALS ARE BEING SEPARATED, PRIOR TO SEATING OF THE VALVES, AND TO COMPLETE ITS EXPANSION AFTER THE VALVES HAVE SEATED TO ABSORB ANY FLUID WHICH MAY HAVE ESCAPED PAST THE VALVE SEATS AS THE VALVES APPROACH THEIR SEATS.
Claim 2
Dependent Claim
150 words
A SELF-SEALING PIPE COUPLING COMPRISING A SOCKET TERMINAL AND A COMPLEMENTAL SPIGOT TERMINAL EACH FORMED WITH A VALVE SEAT, A VALVE IN EACH TERMINAL RESILIENTLY URGED TOWARDS ITS SEAT, AND SEATING THEREON WHEN THE TERMINALS ARE NOT COUPLED TOGETHER, TO PREVENT LOSS OF FLUID SAID BEING RELATIVELY OF SUCH LENGTH AS TO MUTUALLY ENGAGE AND BE FORCED OFF THEIR RESPECTIVE SEATS WHEN THE TERMINALS ARE COUPLED TOGETHER, AND A MEMBER OF RESILIENT FLUID-ABSORBING MATERIAL CARRIED BY THE SOCKET TERMINAL INTERMEDIATE THE TWO VALVE SEATS, SAID MEMBER BEING OF A THICKNESS TO BE COMPRESSED BETWEEN THE TERMINALS WHEN THEY ARE COUPLED TOGETHER, AND TO EXPAND INTO THE SPACE BETWEEN THE VALVES AS THE TERMINALS ARE BEING SEPARATED, PRIOR TO SEATING OF THE VALVES, AND TO COMPLETE ITS EXPANSION AFTER THE VALVES HAVE SEATED TO ABSORB ANY FLUID WHICH MAY HAVE ESCAPED PAST THE VALVE SEATS AS THE VALVES APPROACH THEIR SEATS.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |