US3123262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Douglass
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A FLOW CONTROL DEVICE COMPRISING A NORMALLY STATIONARY, INNER ANNULAR MEMBER, AN OUTER ANNULAR MEMBER ROTATABLY MOUNTED EXTERNALLY OF THE INNER MEMBER AND BEING RADIALLY SPACED THEREFROM AND SLIDABLE AXIALLY THEREOF FROM AN OPERATIVE POSITION TO A RETRACTED POSITION, A FOLDED-BACK FLEXIBLE TAPERED SLEEVE, MEANS SECURING THE SMALLER END OF THE TAPERED SLEEVE TO THE INNER ANNULAR MEMBER, AND MEANS SECURING THE LARGE, FOLDED-BACK END OF THE TAPERED SLEEVE TO THE OUTER ANNULAR MEMBER, AND MEANS FOR ROTATING SAID OUTER ANNULAR MEMBER IN SAID OPERATIVE POSITION RELATIVE TO THE INNER ANNULAR MEMBER TO EFFECT TWISTING OF THE TAPERED SLEEVE BETWEEN AN OPEN POSITION AND A CLOSED POSITION IN WHICH THE SLEEVE EXTENDS ACROSS THE INNER ANNULAR MEMBER.
Claim 2
Dependent Claim
117 words
A FLOW CONTROL DEVICE COMPRISING A NORMALLY STATIONARY, INNER ANNULAR MEMBER, AN OUTER ANNULAR MEMBER ROTATABLY MOUNTED EXTERNALLY OF THE INNER MEMBER AND BEING RADIALLY SPACED THEREFROM AND SLIDABLE AXIALLY THEREOF FROM AN OPERATIVE POSITION TO A RETRACTED POSITION, A FOLDED-BACK FLEXIBLE TAPERED SLEEVE, MEANS SECURING THE SMALLER END OF THE TAPERED SLEEVE TO THE INNER ANNULAR MEMBER, AND MEANS SECURING THE LARGE, FOLDED-BACK END OF THE TAPERED SLEEVE TO THE OUTER ANNULAR MEMBER, AND MEANS FOR ROTATING SAID OUTER ANNULAR MEMBER IN SAID OPERATIVE POSITION RELATIVE TO THE INNER ANNULAR MEMBER TO EFFECT TWISTING OF THE TAPERED SLEEVE BETWEEN AN OPEN POSITION AND A CLOSED POSITION IN WHICH THE SLEEVE EXTENDS ACROSS THE INNER ANNULAR MEMBER.
References Cited (Backward Citations)
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Cited
GB592388A
Cited
US2663467A
Cited
GB634975A
Cited
US2695605A
Cited
US2846179A
Cited
US2857071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |