Patent US3157203A successfully refreshed from Google Patents.
US3157203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for closing side openings in pipelines
Assignee: TD Williamson Inc
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Filing: 1961-05-09
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Granted: 1964-11-17
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Expires: 1981-05-09
Abstract
No abstract record available.
Inventors
- 👤 Nooy Burton Ver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/11; F16L55/1108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PLUG FOR AN INTERNALLY THREADED NIPPLE HAVING A CYLINDRICAL BORE WHICH COMPRISES, IN COMBINATION, AN EXTERIORLY THREADED HOLLOW CYLINDRICAL BODY HAVING A CLOSED BOTTOM, A PLATE EXTENDING ACROSS THE INTERIOR OF THE BODY WITH AT LEAST A CENTRAL PART OF THE PLATE SPACED FROM THE BOTTOM OF THE BODY, AN OPENING THROUGH SAID CENTRAL PART OF THE PLATE, SAID OPENING HAVING A CENTRAL PORTION AND LATERAL EXTENSIONS THEREFROM, AN ABUTMENT BENEATH THE PLATE POSITIONED LATERALLY FROM ONE SIDE OF ONE OF SAID LATERAL EXTENSIONS OF SAID OPENING AND ADAPTED TO ENGAGE A CROSSBAR ON A TOOL FOR TURNING THE PLUG, AND A DOWNWARD PROJECTION ON THE UNDERSIDE OF THE PLATE FACING THE BOTTOM OF THE BODY AND POSITIONED INTERMEDIATE SAID ABUTMENT AND SAID ONE SIDE OF SAID ONE OF SAID LATERAL EXTENSIONS OF THE OPENING.
Claim 2
Dependent Claim
136 words
A PLUG FOR AN INTERNALLY THREADED NIPPLE HAVING A CYLINDRICAL BORE WHICH COMPRISES, IN COMBINATION, AN EXTERIORLY THREADED HOLLOW CYLINDRICAL BODY HAVING A CLOSED BOTTOM, A PLATE EXTENDING ACROSS THE INTERIOR OF THE BODY WITH AT LEAST A CENTRAL PART OF THE PLATE SPACED FROM THE BOTTOM OF THE BODY, AN OPENING THROUGH SAID CENTRAL PART OF THE PLATE, SAID OPENING HAVING A CENTRAL PORTION AND LATERAL EXTENSIONS THEREFROM, AN ABUTMENT BENEATH THE PLATE POSITIONED LATERALLY FROM ONE SIDE OF ONE OF SAID LATERAL EXTENSIONS OF SAID OPENING AND ADAPTED TO ENGAGE A CROSSBAR ON A TOOL FOR TURNING THE PLUG, AND A DOWNWARD PROJECTION ON THE UNDERSIDE OF THE PLATE FACING THE BOTTOM OF THE BODY AND POSITIONED INTERMEDIATE SAID ABUTMENT AND SAID ONE SIDE OF SAID ONE OF SAID LATERAL EXTENSIONS OF THE OPENING.
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |