US3221758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sealing a pipe line
Assignee: OMCO Inc
•
Filing: 1962-03-22
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Granted: 1965-12-07
•
Expires: 1982-03-22
Abstract
No abstract record available.
Inventors
- 👤 Lynn H Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:03
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/16; F16L55/162; F16L55/165; F16L55/1657; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0441; Y10T137/0452; Y10T137/1624; Y10T137/1797; Y10T137/1812
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
SEALING MEANS FOR A PIPE LINE HAVING IN COMBINATION A T HAVING TWO COAXIAL HUBS, A PIPE HAVING ONE END FIXED IN ONE HUB, A PLUG IN THE OTHER HUB, A COIL SPRING IN COAXIAL RELATION WITH THE PIPE AND LOCATED BETWEEN THE PIPE AND THE PLUG, A CYLINDRICALLY AXIALLY EXPANDIBLE HEAT-RESPONSIVE ELEMENT COAXIALLY AND SLIDABLY DISPOSED IN THE COIL SPRING AND MOVABLE INDEPENDENTLY OF THE LATTER, AND CLOSURE MEANS FOR THE PIPE ON THE END OF THE ELEMENT CONFRONTING THE END OF THE PIPE.
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |