Gentle wash mechanism for a dishwasher
Abstract
Abstract A CONDUIT MEMBER EXTENDS IN AN UPWARDLY DIRECTION FROM AN INLET OF A WATER PUMP AT THE BOTTOM OF A DISHWASHER TANK. THE CONDUIT HAS AN OPENING FORMED THERETHROUGH HAVING A LOWER END IN COMMUNICATION WITH THE PUMP INLET AND AN UPPER END POSITIONED AT A SPECIFIED LEVEL ABOVE THE BOTTOM OF THE TANK. THE PUMP DRAWS WASH WATER FROM THE WASH TANK AND DELIVERS IT UNDER PRESSURE TO A SPRAY ARM WHERE IT IS SPRAYED ONTO DISHES. WATER LEVEL CONTROLS ARE PROVIDED SO THAT FOR NORMAL WASHING CYCLES THE WATER LEVEL WITHIN THE TANK IS ABOVE THE UPPER END OF THE STANDPIPE, HOWEVER, FOR A GENTLE WASH CYLCE, THE WATER LEVEL IS MAINTAINED BELOW THE UPPER END OF THE CONDUIT. DURING A GENTLE WASH CYCLE, AIR IS ASPIRATED INTO THE PUMP INLET CAUSING AERATION, THEREBY REDUCING PUMP EFFICEINCY AND THE VELOCITY OF WATER LEAVING THE SPRAY ARM.
Inventors
- 👤 Harold L Woehler
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |