Patent US4057063A successfully refreshed from Google Patents.
US3206157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed control valve
Assignee: Individual
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Filing: 1961-12-20
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Granted: 1965-09-14
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Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Charles R Reading
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A VALKVE FOR CONTROLLING THE FLOW THROUGH A FLEXIBLE TUBE COMPRISING A FIRST BODY BLOCK, A SECOND BODY BLOCK PIVOTALLY AND SLIDABLY MOUNTED WITH RESPECT TO SAID FIRST BODY BLOCK, SAID BLOCKS HAVING LONGITUDINAL FACING SURFACES SEPARATE FOR ACCESS THEREBETWEEN, SAID FACING SURFACES HAVING LONGITUDINALLY DISPOSED FACING SLOTS FOR THE RECEPTION OF THE FLEXIBLE TUBE, SAID SLOTS BETWEEN THEIR ENDS BEING OF VARYING DEPTHS, SAID BLOCKS UPON RELATIVE SLIDABLE SHIFTING LONGITUDINALLY OF THE SLOTS VARYING THE COMBINED CROSS SECTION OF SAID SLOTS, AND THE RELATIVE LONGITUDINAL POSITIONING OF SAID SLOTS DETERMINING THE FLOW THROUGH SAID TUBE.
Claim 2
Dependent Claim
96 words
A VALKVE FOR CONTROLLING THE FLOW THROUGH A FLEXIBLE TUBE COMPRISING A FIRST BODY BLOCK, A SECOND BODY BLOCK PIVOTALLY AND SLIDABLY MOUNTED WITH RESPECT TO SAID FIRST BODY BLOCK, SAID BLOCKS HAVING LONGITUDINAL FACING SURFACES SEPARATE FOR ACCESS THEREBETWEEN, SAID FACING SURFACES HAVING LONGITUDINALLY DISPOSED FACING SLOTS FOR THE RECEPTION OF THE FLEXIBLE TUBE, SAID SLOTS BETWEEN THEIR ENDS BEING OF VARYING DEPTHS, SAID BLOCKS UPON RELATIVE SLIDABLE SHIFTING LONGITUDINALLY OF THE SLOTS VARYING THE COMBINED CROSS SECTION OF SAID SLOTS, AND THE RELATIVE LONGITUDINAL POSITIONING OF SAID SLOTS DETERMINING THE FLOW THROUGH SAID TUBE.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |