Patent US3022806A successfully refreshed from Google Patents.
US3587628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas pressure regulators
Assignee: Bryan Donkin Co Ltd
•
Filing: 1969-03-06
•
Granted: 1971-06-28
•
Expires: 1989-03-06
Abstract
Abstract A GAS PRESSURE REGULATOR HAVING A REGULATOR VALVE CONTROLLED BY A FLEXIBLE DIAPHRAGM ACTED UPON BY GAS PRESSURE IN A GAS CHAMBER WHICH COMMUNICATES WITH AN OUTLET CHAMBER OF THE REGULATOR, AND HAVING ALSO A CUTOFF VALVE WHICH IS CAUSED TO CLOSE WHEN THE FLOW OF GAS FROM THE OUTLET CHAMBER TO THE GAS CHAMBER EXCEEDS A PREDETERMINED RATE ON LEAKAGE OF THE FLEXIBLE DIAPHRAGM.
Inventors
- 👤 Sydney Farrer
- 👤 Ernest Edward Doe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:47
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0675; G05D16/0694; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7725; Y10T137/7726; Y10T137/7727; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |