US3331374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water level control
Assignee: Individual
•
Filing: 1965-10-04
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Granted: 1967-07-18
•
Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Bruce E Stewart
- 👤 John B Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:54
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4244; G; G05; G05D; G05D9/00; G05D9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A DISHWASHER HAVING MEANS DEFINING A WASHING CHAMBER HAVING A SUMP PORTION, MEANS FOR DELIVERING LIQUID TO SAID CHAMBER TO FILL SAID CHAMBER TO A PRESELECTED LEVEL, DRAIN MEANS FOR CONDUCTING LIQUID AWAY FROM SAID CHAMBER, AND MEANS FOR PUMPING LIQUID FROM SAID SUMP PORTION OF THE CHAMBER, MEANS FOR DIRECTING LIQUID FLOW FROM SAID PUMPING MEANS SELECTIVELY BACK TO SAID CHAMBER TO MAINTAIN SAID LEVEL OR TO SAID DRAIN MEANS TO REMOVE SAID LIQUID FROM SAID CHAMBER, INCLUDING MEANS MOVABLE WITH SAID DIRECTING MEANS AND RESPONSIVE TO THE LEVEL OF LIQUID IN SAID WASHING CHAMBER TO CAUSE SAID DIRECTING MEANS TO DIRECT SAID LIQUID TO SAID DRAIN MEANS IN THE EVENT THAT THE LEVEL OF LIQUID IN SAID CHAMBER RISES ABOVE SAID PRESELECTED LEVEL, SAID LEVEL RESPONSIVE MEANS COMPRISING MEANS FOR PROGRESSIVELY UNCOVERING THE DRAIN MEANS IN DIRECT RELATIONSHIP TO THE HEIGHT OF SAID LIQUID LEVEL ABOVE SAID PRESELECTED LEVEL.
Claim 2
Dependent Claim
152 words
IN A DISHWASHER HAVING MEANS DEFINING A WASHING CHAMBER HAVING A SUMP PORTION, MEANS FOR DELIVERING LIQUID TO SAID CHAMBER TO FILL SAID CHAMBER TO A PRESELECTED LEVEL, DRAIN MEANS FOR CONDUCTING LIQUID AWAY FROM SAID CHAMBER, AND MEANS FOR PUMPING LIQUID FROM SAID SUMP PORTION OF THE CHAMBER, MEANS FOR DIRECTING LIQUID FLOW FROM SAID PUMPING MEANS SELECTIVELY BACK TO SAID CHAMBER TO MAINTAIN SAID LEVEL OR TO SAID DRAIN MEANS TO REMOVE SAID LIQUID FROM SAID CHAMBER, INCLUDING MEANS MOVABLE WITH SAID DIRECTING MEANS AND RESPONSIVE TO THE LEVEL OF LIQUID IN SAID WASHING CHAMBER TO CAUSE SAID DIRECTING MEANS TO DIRECT SAID LIQUID TO SAID DRAIN MEANS IN THE EVENT THAT THE LEVEL OF LIQUID IN SAID CHAMBER RISES ABOVE SAID PRESELECTED LEVEL, SAID LEVEL RESPONSIVE MEANS COMPRISING MEANS FOR PROGRESSIVELY UNCOVERING THE DRAIN MEANS IN DIRECT RELATIONSHIP TO THE HEIGHT OF SAID LIQUID LEVEL ABOVE SAID PRESELECTED LEVEL.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |