US3136525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center flow in-line valve
Assignee: Walworth Co
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Filing: 1962-02-19
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Granted: 1964-06-09
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Charles H Creasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:11
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F16K31/54; F16K3/00; F16K3/02; F16K3/0209; F16K3/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A VALVE FOR CONTROLLING THE FLOW OF FLUID IN A GENERALLY CYLINDRICAL PASSAGE, A GATE ASSEMBLY WHICH COMPRISES AT LEAST THREE RADIALLY DIVIDED SEGMENTS PIVOTALLY MOUNTED AROUND THE PERIMETER OF SAID PASSAGE, AND MEANS FOR SWINGING SAID SEGMENTS IN UNISON TO SPREAD THEM OUT INTO THE CYLINDRICAL FORM OF THE PASSAGE AND ALTERNATELY BRING THEM TOGETHER ALONG THE LINES OF RADIAL DIVISION, EACH OF SAID SEGMENTS INCLUDING A TOOTHED SECTOR CONCENTRIC WITH ITS PIVOTAL MOUNTING, SAID MEANS FOR SWINGING THE SEGMENTS INCLUDING SAID TOOTHED SECTORS AND A ROTARY OPERATING SLEEVE CONCENTRIC WITH SAID PASSAGE, SAID ROTARY OPERATING SLEEVE HAVING THREADS MESHING WITH THE TEETH OF SAID TOOTHED SECTORS SO THAT ROTATION OF THE ROTARY OPERATING SLEEVE PRODUCES THE AFORESAID SWINGING OF THE SEGMENTS.
Claim 2
Dependent Claim
124 words
IN A VALVE FOR CONTROLLING THE FLOW OF FLUID IN A GENERALLY CYLINDRICAL PASSAGE, A GATE ASSEMBLY WHICH COMPRISES AT LEAST THREE RADIALLY DIVIDED SEGMENTS PIVOTALLY MOUNTED AROUND THE PERIMETER OF SAID PASSAGE, AND MEANS FOR SWINGING SAID SEGMENTS IN UNISON TO SPREAD THEM OUT INTO THE CYLINDRICAL FORM OF THE PASSAGE AND ALTERNATELY BRING THEM TOGETHER ALONG THE LINES OF RADIAL DIVISION, EACH OF SAID SEGMENTS INCLUDING A TOOTHED SECTOR CONCENTRIC WITH ITS PIVOTAL MOUNTING, SAID MEANS FOR SWINGING THE SEGMENTS INCLUDING SAID TOOTHED SECTORS AND A ROTARY OPERATING SLEEVE CONCENTRIC WITH SAID PASSAGE, SAID ROTARY OPERATING SLEEVE HAVING THREADS MESHING WITH THE TEETH OF SAID TOOTHED SECTORS SO THAT ROTATION OF THE ROTARY OPERATING SLEEVE PRODUCES THE AFORESAID SWINGING OF THE SEGMENTS.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |