Patent US1936623A successfully refreshed from Google Patents.
Patent US3553740A successfully refreshed from Google Patents.
US3553740A
Expired / Lapsed
US
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Float controlled valves of cisterns
Assignee: Individual
•
Filing: 1968-10-21
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Granted: 1971-01-12
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Expires: 1988-10-21
Abstract
Abstract THIS INVENTION PROVIDES IN OR FOR A FLUSHING CISTERN A SUBSTANTIALLY NOISELESS FLUSH VALVE OF THE TYPE INCLUDING AN OPEN WATER LEVEL DETERMINING VESSEL IN WHICH THE FLOAT MEMBER IS FREELY SUSPENDED SO AS TO FORM A PRESSURE WATER CHAMBER WITHIN SAID OPEN VESSEL BELOW THE FLOAT MEMBER TO BE CHARGED WITH CISTERN REPLENISHING WATER FLOWING OVER THE RIM OF SAID OPEN VESSEL AS THE CISTERN APPROACHES FULL CAPACITY WHEREBY PRESSURE IS DEVELOPED IN SAID CHAMBER TO IMPART A QUICK SHORT LIFT TO SAID FLOAT MEMBER AND FLOAT ARM SUFFICIENT TO CLOSE SAID VALVE, THE WATER IN SAID CHAMBER BEING DISCHARGEABLE IN RESPONSE TO THE SUCCEEDING FLUSHING OPERATION OF THE CISTERN.
Inventors
- 👤 Clifford Cyril Fogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:12
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/742
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |