US3155369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe line stopper
Assignee: Individual
•
Filing: 1962-02-09
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Granted: 1964-11-03
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Paul C Wright
- 👤 Orval V Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A CYLINDRICAL PIPE STOPPER ADAPTED TO BE INSERTED INTO, AND HAVING A MINIMUM OUTER DIAMETER LESS THAN, A TRANSVERSE CIRCULAR OPENING THROUGH A PIPE LINE AND TO BE EXPANDED INTO FLOW-STOPPING SEALING ENGAGEMENT WITH THE EDGES OF THE OPENING COMPRISING: A LONGITUDINALLYSPLIT EXPANSION CYLINDRICAL SLEEVE; A MEMBER MOUNTED FOR MOVEMENT COAXIALLY OF SAID SLEVE; A JACK SCREW THREADEDLY ENGAGED WITH SAID MEMBER FOR EFFECTING MOVEMENT THEREOF; A SET OF SUBSTANTIALLY UNIFORMLY ANGULARLY SPACED TOGGLE ARMS PIVOTALLY CONNECTED TO SAID MEMBER AND TO SAID SLEEVE, WHEREBY MOVEMENT OF SAID MEMBER IN ONE DIRECTION EXPANDS SAID SLEEVE AND MOVEMENT OF SAID MEMBER IN THE OPPOSITE DIRECTION POSITIVELY CONTRACTS SAID SLEEVE; AND BALL AND SOCKET JOINTS CONNECTING ALL OF SAID ARMS, SAVE ONE, WITH SAID MEMBER AND SAID SLEEVE, SAID ONE ARM BEING CONNECTED FOR ONLY SUBSTANTIALLY PIVOTAL MOVEMENT IN A SINGLE PLANE IN ORDER TO RESTRAIN COAXIAL RELATIVE ROTATION BETWEEN SAID SLEEVE AND SAID MEMBER.
Claim 2
Dependent Claim
153 words
A CYLINDRICAL PIPE STOPPER ADAPTED TO BE INSERTED INTO, AND HAVING A MINIMUM OUTER DIAMETER LESS THAN, A TRANSVERSE CIRCULAR OPENING THROUGH A PIPE LINE AND TO BE EXPANDED INTO FLOW-STOPPING SEALING ENGAGEMENT WITH THE EDGES OF THE OPENING COMPRISING: A LONGITUDINALLYSPLIT EXPANSION CYLINDRICAL SLEEVE; A MEMBER MOUNTED FOR MOVEMENT COAXIALLY OF SAID SLEVE; A JACK SCREW THREADEDLY ENGAGED WITH SAID MEMBER FOR EFFECTING MOVEMENT THEREOF; A SET OF SUBSTANTIALLY UNIFORMLY ANGULARLY SPACED TOGGLE ARMS PIVOTALLY CONNECTED TO SAID MEMBER AND TO SAID SLEEVE, WHEREBY MOVEMENT OF SAID MEMBER IN ONE DIRECTION EXPANDS SAID SLEEVE AND MOVEMENT OF SAID MEMBER IN THE OPPOSITE DIRECTION POSITIVELY CONTRACTS SAID SLEEVE; AND BALL AND SOCKET JOINTS CONNECTING ALL OF SAID ARMS, SAVE ONE, WITH SAID MEMBER AND SAID SLEEVE, SAID ONE ARM BEING CONNECTED FOR ONLY SUBSTANTIALLY PIVOTAL MOVEMENT IN A SINGLE PLANE IN ORDER TO RESTRAIN COAXIAL RELATIVE ROTATION BETWEEN SAID SLEEVE AND SAID MEMBER.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |