Patent DE640436C successfully refreshed from Google Patents.
US3098527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler alarm valve
Assignee: Matthew Hall and Co Ltd
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Filing: 1961-03-22
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Granted: 1963-07-23
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Allen George
- 👤 Venison Douglas Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:27
CPC Classifications
F; F16; F16K; F16K15/00; A; A01; A01G; A01G25/00; A01G25/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN ALARM VALVE FOR ALTERNATE SPRINKLER SYSTEMS, COMPRISING A VALVE BODY HAVING AN INLET OPENING AND AN ALARM PORT ARRANGED IN SAID INLET OPENING, A CLACK HINGEDLY MOUNTED WITHIN SAID BODY TO EFFECT CLOSURE OF SAID INLET OPENING AND SAID ALARM PORT, A LEVER SYSTEM OPERATIVELY CO-OPERATING WITH SAID CLACK, AND MEANS OPERABLE EXTERNALLY OF SAID BODY FOR HOLDING SAID LEVER SYSTEM IN AN OPERATIVE POSITION TO ENGAGE SAID CLACK IN THE DRY STATE OF THE SYSTEM AND FOR HOLDING SAID LEVER SYSTEM IN
Claim 2
Dependent Claim
84 words
AN ALARM VALVE FOR ALTERNATE SPRINKLER SYSTEMS, COMPRISING A VALVE BODY HAVING AN INLET OPENING AND AN ALARM PORT ARRANGED IN SAID INLET OPENING, A CLACK HINGEDLY MOUNTED WITHIN SAID BODY TO EFFECT CLOSURE OF SAID INLET OPENING AND SAID ALARM PORT, A LEVER SYSTEM OPERATIVELY CO-OPERATING WITH SAID CLACK, AND MEANS OPERABLE EXTERNALLY OF SAID BODY FOR HOLDING SAID LEVER SYSTEM IN AN OPERATIVE POSITION TO ENGAGE SAID CLACK IN THE DRY STATE OF THE SYSTEM AND FOR HOLDING SAID LEVER SYSTEM IN
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |