US3294110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control
Assignee: Hoover Co
•
Filing: 1964-03-05
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Granted: 1966-12-27
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Expires: 1984-03-05
Abstract
No abstract record available.
Inventors
- 👤 Rauszer Kazimir Stanislaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:34
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18; G01F23/185; D; D06; D06F; D06F39/00; D06F39/08; D06F39/087; G01F23/0053; F; F16; F16L; F16L2101/00; F16L2101/30; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7498
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A LIQUID LEVEL CONTROL FOR A RECEPTACLE HAVING AN INLET VALVE AND AUTOMATIC REGULATING MEANS FOR OPENING AND CLOSING SAID VALVE COMPRISING; A FIRST TUBE HAVING ONE END COMMUNICATING WITH THE INTERIOR OF SAID RECEPTACLE NEAR THE BOTTOM THEREOF AND HAVING ITS OTHER END COMMUNICATING WITH AN OVERFLOW CHAMBER, THE OVERFLOW LEVEL OF SAID OVERFLOW CHAMBER BEING SUBSTANTIALLY THE SAME AS THE DESIRED LIQUID LEVEL IN SAID RECEPTACLE, A SECOND TUBE HAVING ONE END COMMUNICATION WITH THE OVERFLOW OF SAID OVERFLOW CHAMBER AND HAVING ITS OTHER END COMMUNICATING WITH A PRESSURE ACTUATED SWITCH, SAID PRESSURE SWITCH BEING ABOVE THE OVERFLOW LEVEL OF SAID OVERFLOW CHAMBER AND COUPLED TO SAID AUTOMATIC REGULATING MEANS, WHEREBY WHEN THE LIQUID IN SAID RECEPTACLE REACHES THE DESIRED LEVEL THE LIQUID OVERFLOWS FROM SAID OVERFLOW CHAMBER INTO SAID SECOND TUBE THEREBY COMPRESSING THE AIR IN SAID SECOND TUBE WHICH CAUSES ACTUATING OF SAID PRESSURE SWITCH TO CLOSE SAID INLET VALVE THROUGH SAID AUTOMATIC REGULATING MEANS.
Claim 2
Dependent Claim
159 words
A LIQUID LEVEL CONTROL FOR A RECEPTACLE HAVING AN INLET VALVE AND AUTOMATIC REGULATING MEANS FOR OPENING AND CLOSING SAID VALVE COMPRISING; A FIRST TUBE HAVING ONE END COMMUNICATING WITH THE INTERIOR OF SAID RECEPTACLE NEAR THE BOTTOM THEREOF AND HAVING ITS OTHER END COMMUNICATING WITH AN OVERFLOW CHAMBER, THE OVERFLOW LEVEL OF SAID OVERFLOW CHAMBER BEING SUBSTANTIALLY THE SAME AS THE DESIRED LIQUID LEVEL IN SAID RECEPTACLE, A SECOND TUBE HAVING ONE END COMMUNICATION WITH THE OVERFLOW OF SAID OVERFLOW CHAMBER AND HAVING ITS OTHER END COMMUNICATING WITH A PRESSURE ACTUATED SWITCH, SAID PRESSURE SWITCH BEING ABOVE THE OVERFLOW LEVEL OF SAID OVERFLOW CHAMBER AND COUPLED TO SAID AUTOMATIC REGULATING MEANS, WHEREBY WHEN THE LIQUID IN SAID RECEPTACLE REACHES THE DESIRED LEVEL THE LIQUID OVERFLOWS FROM SAID OVERFLOW CHAMBER INTO SAID SECOND TUBE THEREBY COMPRESSING THE AIR IN SAID SECOND TUBE WHICH CAUSES ACTUATING OF SAID PRESSURE SWITCH TO CLOSE SAID INLET VALVE THROUGH SAID AUTOMATIC REGULATING MEANS.
References Cited (Backward Citations)
US2592314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |