Patent US3282556A successfully refreshed from Google Patents.
US3282556A
Expired / Lapsed
US
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Throttling button for diaphragm valve
Assignee: HOFFMAN SPECIALTY Mfg CORP
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Filing: 1964-06-12
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Granted: 1966-11-01
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Robert T Hancook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:54
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A DIAPHRAGM VALVE HAVING A VALVE SEAT AND A DIAPHRAGM COMPRISING A DISK-LIKE BODY ADAPTED TO SEAT AGAINST THE VALVE SEAT AND, PROJECTING CENTRALLY FROM ONE FACE OF SAID BODY, A THROTTLING BUTTON WHICH ENTERS THE VALVE SEAT AS THE DIAPHRAGM BODY MOVES TOWARD SEATED POSITION, SAID BUTTON HAVING A CENTRAL CORE AND A RING OF RIGID MATERIAL SURROUNDING SAID CORE AT ITS JUNCTION WITH SAID BODY, SAID BODY AND CORE BEING FORMED AS AN INTEGRAL UNIT OF FLEXIBLE ELASTOMERIC MATERIAL, SAID CORE PROJECTING BEYOND SAID RING, SAID BUTTON BEING OF PROGRESSIVELY SMALLER DIAMETER AWAY FROM THE DIAPHRAGM BODY AND THE OUTER SURFACE OF SAID RING BEING SUBSTANTIALLY FLUSH WITH THE SURFACE OF THAT PORTION OF THE CORE WHICH PROJECTS BEYOND THE RING.
Claim 2
Dependent Claim
124 words
IN A DIAPHRAGM VALVE HAVING A VALVE SEAT AND A DIAPHRAGM COMPRISING A DISK-LIKE BODY ADAPTED TO SEAT AGAINST THE VALVE SEAT AND, PROJECTING CENTRALLY FROM ONE FACE OF SAID BODY, A THROTTLING BUTTON WHICH ENTERS THE VALVE SEAT AS THE DIAPHRAGM BODY MOVES TOWARD SEATED POSITION, SAID BUTTON HAVING A CENTRAL CORE AND A RING OF RIGID MATERIAL SURROUNDING SAID CORE AT ITS JUNCTION WITH SAID BODY, SAID BODY AND CORE BEING FORMED AS AN INTEGRAL UNIT OF FLEXIBLE ELASTOMERIC MATERIAL, SAID CORE PROJECTING BEYOND SAID RING, SAID BUTTON BEING OF PROGRESSIVELY SMALLER DIAMETER AWAY FROM THE DIAPHRAGM BODY AND THE OUTER SURFACE OF SAID RING BEING SUBSTANTIALLY FLUSH WITH THE SURFACE OF THAT PORTION OF THE CORE WHICH PROJECTS BEYOND THE RING.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |