US3306314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float operated air relief valve
Assignee: Armstrong Machine Works
•
Filing: 1964-01-27
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Granted: 1967-02-28
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Nils A Judsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/08; F24D19/082; F24D19/083; F24D19/085; F24D19/087; F16; F16K; F16K24/00; F16K24/04; F16K24/042; F16K24/048; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
AN AIR RELIEF VALVE ASSEMBLY FOR LIQUID CIRCULATING SYSTEMS COMPRISING A CHAMBERED BODY MEMBER PROVIDED WITH AN INLET AND HAVING A TOP WALL PROVIDED WITH AN OUTLET HAVING AN INWARDLY FACING VALVE SEAT, A VALVE COACTING WITH SAID VALVE SEAT, A SUPPORT MEMBER FOR SAID VALVE OF SPRINGABLY RESILIENT MATERIAL FIXEDLY MOUNTED AT ONE
References Cited (Backward Citations)
US1457055A
Cited
US1711272A
Cited
US1725875A
Cited
FR775296A
Cited
US2276136A
Cited
US2586143A
Cited
US3152608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |