Patent US3159174A successfully refreshed from Google Patents.
US3159174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filling and emptying system for washing machine
Assignee: Hoover Co
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Filing: 1961-04-20
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Granted: 1964-12-01
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Expires: 1981-04-20
Abstract
No abstract record available.
Inventors
- 👤 Searle Walter William Ralph
- 👤 Mann Edward Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:03
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/0007; D; D06; D06F; D06F33/00; D06F33/04; D06F33/08; D06F39/00; D06F39/08; D06F39/087; D06F39/088; F; F16; F16L; F16L41/00; F16L41/02; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/6851; Y10T137/7032; Y10T137/7287; Y10T137/729
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A WASHING MACHINE COMPRISING A TUB, CENTRIFUGAL PUMP FOR EMPTYING SAID TUB, SAID PUMP BEING MOUNTED INDEPENDENTLY OF AND POSITIONED LATERALLY OF SAID TUB, SAID PUMP HAVING ITS INLET AT A LEVEL NEAR THE LEVEL OF THE OUTLET OF SAID TUB, A FLEXIBLE LATERALLY EXTENDING COMBINED INLET AND OUTLET PIPE EXTENDING BETWEEN THE OUTLET OF SAID TUB TO THE INLET OF SAID PUMP, A COMBINED INLET AND VENT STAND PIPE OF COMPARATIVELY LARGE DIAMETER EXTENDING UPWARDLY FROM SAID LATERALLY EXTENDING PIPE AND CONNECTED THERETO AT A POINT ADJACENT TO THE INLET OF SAID PUMP, LIQUID SUPPLY MEANS FOR INTRODUCING LIQUID INTO SAID STAND PIPE SO AS TO ENTER SAID TUB FROM THE BOTTOM THEREOF THROUGH SAID LATERALLY EXTENDING PIPE, AUTOMATIC MEANS FOR MAINTAINING A PROPER LIQUID LEVEL IN SAID TUB, A VENT OPENING IN SAID STAND PIPE ABOVE SAID LIQUID LEVEL, AND A SHROUD OVER SAID VENT OPENING TO PREVENT LEAKAGE OF WATER THROUGH SAID OPENING AS THE WATER FLOWS DOWNWARDLY THROUGH SAID STAND PIPE.
Claim 2
Dependent Claim
165 words
A WASHING MACHINE COMPRISING A TUB, CENTRIFUGAL PUMP FOR EMPTYING SAID TUB, SAID PUMP BEING MOUNTED INDEPENDENTLY OF AND POSITIONED LATERALLY OF SAID TUB, SAID PUMP HAVING ITS INLET AT A LEVEL NEAR THE LEVEL OF THE OUTLET OF SAID TUB, A FLEXIBLE LATERALLY EXTENDING COMBINED INLET AND OUTLET PIPE EXTENDING BETWEEN THE OUTLET OF SAID TUB TO THE INLET OF SAID PUMP, A COMBINED INLET AND VENT STAND PIPE OF COMPARATIVELY LARGE DIAMETER EXTENDING UPWARDLY FROM SAID LATERALLY EXTENDING PIPE AND CONNECTED THERETO AT A POINT ADJACENT TO THE INLET OF SAID PUMP, LIQUID SUPPLY MEANS FOR INTRODUCING LIQUID INTO SAID STAND PIPE SO AS TO ENTER SAID TUB FROM THE BOTTOM THEREOF THROUGH SAID LATERALLY EXTENDING PIPE, AUTOMATIC MEANS FOR MAINTAINING A PROPER LIQUID LEVEL IN SAID TUB, A VENT OPENING IN SAID STAND PIPE ABOVE SAID LIQUID LEVEL, AND A SHROUD OVER SAID VENT OPENING TO PREVENT LEAKAGE OF WATER THROUGH SAID OPENING AS THE WATER FLOWS DOWNWARDLY THROUGH SAID STAND PIPE.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |