US2735442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
kenney
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:25
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/02; F; F22; F22D; F22D5/00; F22D5/08; F22D5/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374; Y10T137/7439; Y10T137/7452
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
A DEVICE FOR CONTROLLING THE LEVEL OF FLUID IN A CONTAINER TO BE USED IN CONNECTION WITH AN INLET CONDUIT HAVING A PRESSURE RESPONSIVE VALVE THEREIN COMPRISING A CASING POSITIONED WITHIN AND INTEGRAL WITH SAID CONTAINER HAVING IN COMBINATION, A VALVE NORMALLY IN CLOSED POSITION, A MOVABLE VALVE SEAT HAVING A PASSAGE THERETHROUGH TO THE ATMOSPHERE ADAPTED TO BE MOVED TO OPEN SAID VALVE, MEANS RESPONSIVE TO THE WATER LEVEL IN SAID CONTAINER FOR OPERATING SAID MOVABLE VAVLE SEAT, A CONDUIT CONNECTING ONE SIDE OF SAID VALVE WITH ONE SIDE OF SAID PRESSURE RESPONSIVE VALVE, A SECOND CONDUIT CONNECTING SAID PASSAGE AND SAID MOVABLE VALVE SEAT AND THE OTHER SIDE OF SAID VALVE WITH THE OTHER SIDE OF SAID PRESSURE RESPONSIVE VALVE WHEREBY WHEN SAID VALVE IS SEATED, SAID SECOND CONDUIT DRAINS THROUGH SAID PASSAGE IN SAID MOVABLE VALVE SEAT REDUCING THE PRESSURE AT ONE SIDE OF SAID PRESSURE RESPONSIVE VALVE WHEREBY THE PRESSURE OF THE NORMAL FLOW OF FLUID THROUGH SAID INLET CONDUIT OPENS AND PASSES THROUGH SAID PRESSURE RESPONSIVE VALVE INTO SAID CONTAINER AND AS THE LEVEL OF FLUID RISES IN SAID CONTAINER SAID MOVABLE VALVE SEAT IS MOVED AGAINST SAID VALVE TO OPEN THE SAME AND SIMULTANEOUSLY CLOSE SAID PASSAGE IN SAID MOVABLE VALVE SEAT WHEREBY SAID FIRST CONDUIT DRAINS INTO SAID SECOND CONDUIT INCREASING THE PRESSURE AT SAID LAST MENTIONED SIDE OF SAID PRESSURE RESPONSIVE VALVE TO PLACE AND HOLD THE SAME IN CLOSED POSITION.
Claim 2
Independent Claim
239 words
A DEVICE FOR CONTROLLING THE LEVEL OF FLUID IN A CONTAINER TO BE USED IN CONNECTION WITH AN INLET CONDUIT HAVING A PRESSURE RESPONSIVE VALVE THEREIN COMPRISING A CASING POSITIONED WITHIN AND INTEGRAL WITH SAID CONTAINER HAVING IN COMBINATION, A VALVE NORMALLY IN CLOSED POSITION, A MOVABLE VALVE SEAT HAVING A PASSAGE THERETHROUGH TO THE ATMOSPHERE ADAPTED TO BE MOVED TO OPEN SAID VALVE, MEANS RESPONSIVE TO THE WATER LEVEL IN SAID CONTAINER FOR OPERATING SAID MOVABLE VAVLE SEAT, A CONDUIT CONNECTING ONE SIDE OF SAID VALVE WITH ONE SIDE OF SAID PRESSURE RESPONSIVE VALVE, A SECOND CONDUIT CONNECTING SAID PASSAGE AND SAID MOVABLE VALVE SEAT AND THE OTHER SIDE OF SAID VALVE WITH THE OTHER SIDE OF SAID PRESSURE RESPONSIVE VALVE WHEREBY WHEN SAID VALVE IS SEATED, SAID SECOND CONDUIT DRAINS THROUGH SAID PASSAGE IN SAID MOVABLE VALVE SEAT REDUCING THE PRESSURE AT ONE SIDE OF SAID PRESSURE RESPONSIVE VALVE WHEREBY THE PRESSURE OF THE NORMAL FLOW OF FLUID THROUGH SAID INLET CONDUIT OPENS AND PASSES THROUGH SAID PRESSURE RESPONSIVE VALVE INTO SAID CONTAINER AND AS THE LEVEL OF FLUID RISES IN SAID CONTAINER SAID MOVABLE VALVE SEAT IS MOVED AGAINST SAID VALVE TO OPEN THE SAME AND SIMULTANEOUSLY CLOSE SAID PASSAGE IN SAID MOVABLE VALVE SEAT WHEREBY SAID FIRST CONDUIT DRAINS INTO SAID SECOND CONDUIT INCREASING THE PRESSURE AT SAID LAST MENTIONED SIDE OF SAID PRESSURE RESPONSIVE VALVE TO PLACE AND HOLD THE SAME IN CLOSED POSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |