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US3306314A
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Float operated air relief valve
Assignee: Armstrong Machine Works
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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 23:19
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)
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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 |