US3135332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for valves
Assignee: Grinnell Corp
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Filing: 1962-05-18
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Granted: 1964-06-02
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Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Philip H Merdinyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:28
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/60; A62C35/605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A DRY PIPE VALVE HAVING: (A) AN ELONGATE, SUBSTANTIALLY TUBULAR VALVE BODY, (B) INLET AND OUTLET OPENINGS IN SAID BODY, (C) A FLOW PASSAGEWAY CONNECTING SAID OPENINGS, (D) A PAIR OF SPACED APART VALVE SEATS SERIALLY ARRANGED IN SAID FLOW PASSAGEWAY, (E) A WATER CLAPPER PIVOTALLY CONNECTED TO SAID VALVE BODY FOR MOVEMENT BETWEEN A POSITION OF ENGAGEMENT WITH THE UPSTREAM ONE OF SAID SEATS AND A POSITION OUT OF ENGAGEMENT THEREWITH, AND (F) AN AIR CLAPPER PIVOTALLY CONNECTED TO SAID VALVE BODY FOR MOVEMENT BETWEEN A POSITION OF ENGAGEMENT WITH THE DOWNSTREAM ONE OF SAID SEATS AND A POSITION OUT OF ENGAGEMENT THEREWITH, SAID AIR CLAPPER HAVING
Claim 2
Dependent Claim
109 words
IN A DRY PIPE VALVE HAVING: (A) AN ELONGATE, SUBSTANTIALLY TUBULAR VALVE BODY, (B) INLET AND OUTLET OPENINGS IN SAID BODY, (C) A FLOW PASSAGEWAY CONNECTING SAID OPENINGS, (D) A PAIR OF SPACED APART VALVE SEATS SERIALLY ARRANGED IN SAID FLOW PASSAGEWAY, (E) A WATER CLAPPER PIVOTALLY CONNECTED TO SAID VALVE BODY FOR MOVEMENT BETWEEN A POSITION OF ENGAGEMENT WITH THE UPSTREAM ONE OF SAID SEATS AND A POSITION OUT OF ENGAGEMENT THEREWITH, AND (F) AN AIR CLAPPER PIVOTALLY CONNECTED TO SAID VALVE BODY FOR MOVEMENT BETWEEN A POSITION OF ENGAGEMENT WITH THE DOWNSTREAM ONE OF SAID SEATS AND A POSITION OUT OF ENGAGEMENT THEREWITH, SAID AIR CLAPPER HAVING
References Cited (Backward Citations)
GB316488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |