US3702160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suppressor device for automatic on-off sprinkler head
Assignee: General Industries Inc
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Filing: 1971-05-28
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Granted: 1972-11-07
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Expires: 1991-05-28
Abstract
Abstract A SUPPRESSOR DEVICE FOR A SPRINKLER HEAD HAVING A CONTROL CHAMBER AND A PRIMARY INTERCONNECTED BY A PASSAGE INCLUDING A UNIDIRECTIONAL VALVE MEMBER FOR PERMITTING FOW THROUGH THE PASSAGE FROM THE PRIMARY CHAMBER TO THE CONTROL CHAMBER WHEN THE PRESURE IN THE PRIMARY CHAMBER EXCEEDS THAT IN THE CONTROL CHAMBER AND PREVENTING FLOW IN THE OTHER DIRECTION THEROUGH THE PASSAGE FROM THE CONTRL CHAMBER TO THE PRIMARY CHAMBER WHEN THE PRESSURE IN THE CONTROL CHAMBER EXCEEDS THAT IN THE PRIMARY CHAMBER.
Inventors
- 👤 Wilfred J Grenier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:52
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |