US3294102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dishwashing apparatus having improved pump means
Assignee: Whirlpool Corp
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Filing: 1964-12-09
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Granted: 1966-12-27
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Expires: 1984-12-09
Abstract
No abstract record available.
Inventors
- 👤 James G Ruspino
- 👤 Wilbur G Peyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4214; A47L15/4225; A47L15/14; A47L15/18; A47L15/22; A47L15/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A DISHWASHING APPARATUS, COMPRISING: MEANS FORMING A LIQUID SUMP; MEANS FOR REMOVING LIQUID FROM SAID SUMP; PUMP MEANS IN SAID SUMP ROTATABLE IN ONE DIRECTION DURING NORMAL DISHWASHING TO PUMP LIQUID THROUGH THE DISHWASHING APPARATUS AND ROTATABLE IN THE OPPOSITE DIRECTION DURING REMOVAL OF LIQUID FROM SAID SUMP; AND MEANS COOPERATING WITH SAID PUMP MEANS FOR VENTING AIR INTO SAID PUMP MEANS DURING SAID OPPOSITE DIRECTION ROTATION TO SUBSTANTIALLY PREVENT NOISE CAUSED BY LIQUID IN SAID PUMP MEANS AND TO SUBSTANTIALLY REDUCE THE POWER REQUIREMENTS OF SAID PUMP MEANS DURING SAID LIQUID REMOVAL, SAID PUMP MEANS INCLUDING A PUMP HOUSING HAVING AN IMPELLER MEANS AND A CUT-WATER CLEARANCE AREA THEREIN, SAID AIR VENTING MEANS LEADING TO ADJACENT BOTH SAID IMPELLER MEANS AND SAID CUT-WATER CLEARANCE AREA.
Claim 2
Dependent Claim
126 words
A DISHWASHING APPARATUS, COMPRISING: MEANS FORMING A LIQUID SUMP; MEANS FOR REMOVING LIQUID FROM SAID SUMP; PUMP MEANS IN SAID SUMP ROTATABLE IN ONE DIRECTION DURING NORMAL DISHWASHING TO PUMP LIQUID THROUGH THE DISHWASHING APPARATUS AND ROTATABLE IN THE OPPOSITE DIRECTION DURING REMOVAL OF LIQUID FROM SAID SUMP; AND MEANS COOPERATING WITH SAID PUMP MEANS FOR VENTING AIR INTO SAID PUMP MEANS DURING SAID OPPOSITE DIRECTION ROTATION TO SUBSTANTIALLY PREVENT NOISE CAUSED BY LIQUID IN SAID PUMP MEANS AND TO SUBSTANTIALLY REDUCE THE POWER REQUIREMENTS OF SAID PUMP MEANS DURING SAID LIQUID REMOVAL, SAID PUMP MEANS INCLUDING A PUMP HOUSING HAVING AN IMPELLER MEANS AND A CUT-WATER CLEARANCE AREA THEREIN, SAID AIR VENTING MEANS LEADING TO ADJACENT BOTH SAID IMPELLER MEANS AND SAID CUT-WATER CLEARANCE AREA.
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) | 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 |