Patent US3291965A successfully refreshed from Google Patents.
US3291965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric water heater with sediment chamber
Assignee: —
•
Filing: —
•
Granted: 1966-12-13
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:36
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/12; F24H9/13; F24H9/133; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
IN A HEATER, THE COMBINATION WITH A MAIN TANK HAVING A HEATING ELEMENT IN A LOWER PORTION THEREOF, BAFFLE MEANS OF LESS HEIGHT THAN THE MAIN TANK BUT EXTENDING TO A LEVEL ABOVE THE HEATING ELEMENT FOR PARTIALLY SEGREGATING A SEDIMENT CHAMBER FROM THE MAIN TANK PORTION IN WHICH THE HEATING ELEMENT IS DISPOSED, THE BAFFLE MEANS PARTITIONING THE SEDIMENT CHAMBER AGAINST DIRECT COMMUNICATION WITH SAID LOWER PORTION OF THE MAIN TANK AND PROVIDING AN OPENING AFFORDING COMMUNICATION SUBSTANTIALLY DIRECTLY BETWEEN THE TOP OF THE SEDIMENT CHAMBER AND AN UPPER PORTION OF THE MAIN TANK, A SUPPLY PIPE OPENING INTO THE SEDIMENT CHAMBER, A DRAIN PIPE OPENING FROM THE SEDIMENT CHAMBER, A LIQUID-DELIVERY PIPE OPENING FROM THE SAID MAIN TANK PORTION OUTSIDE OF THE SEDIMENT CHAMBER, A THERMOSTAT OPERATIVELY CONNECTED TO CONTROL SAID HEATING ELEMENT AND HAVING AN ENERGIZING BULB DISPOSED WITHIN THE SEDIMENT CHAMBER IN THE PATH OF LIQUID DELIVERED THERETO THROUGH SAID PIPE, AND AN OVERTEMPERATURE THERMOSTAT OPERATIVELY CONNECTED TO CONTROL SAID HEATING ELEMENT AND HAVING A BULB LOCATED IN THE MAIN TANK EXTERNALLY OF SAID CHAMBER AT A LEVEL HIGHER THAN THAT OF THE HEATING ELEMENT AND LOWER THAN THE LEVEL OF COMMUNICATION BETWEEN THE SEDIMENT CHAMBER AND THE MAIN TANK.
Claim 2
Dependent Claim
204 words
IN A HEATER, THE COMBINATION WITH A MAIN TANK HAVING A HEATING ELEMENT IN A LOWER PORTION THEREOF, BAFFLE MEANS OF LESS HEIGHT THAN THE MAIN TANK BUT EXTENDING TO A LEVEL ABOVE THE HEATING ELEMENT FOR PARTIALLY SEGREGATING A SEDIMENT CHAMBER FROM THE MAIN TANK PORTION IN WHICH THE HEATING ELEMENT IS DISPOSED, THE BAFFLE MEANS PARTITIONING THE SEDIMENT CHAMBER AGAINST DIRECT COMMUNICATION WITH SAID LOWER PORTION OF THE MAIN TANK AND PROVIDING AN OPENING AFFORDING COMMUNICATION SUBSTANTIALLY DIRECTLY BETWEEN THE TOP OF THE SEDIMENT CHAMBER AND AN UPPER PORTION OF THE MAIN TANK, A SUPPLY PIPE OPENING INTO THE SEDIMENT CHAMBER, A DRAIN PIPE OPENING FROM THE SEDIMENT CHAMBER, A LIQUID-DELIVERY PIPE OPENING FROM THE SAID MAIN TANK PORTION OUTSIDE OF THE SEDIMENT CHAMBER, A THERMOSTAT OPERATIVELY CONNECTED TO CONTROL SAID HEATING ELEMENT AND HAVING AN ENERGIZING BULB DISPOSED WITHIN THE SEDIMENT CHAMBER IN THE PATH OF LIQUID DELIVERED THERETO THROUGH SAID PIPE, AND AN OVERTEMPERATURE THERMOSTAT OPERATIVELY CONNECTED TO CONTROL SAID HEATING ELEMENT AND HAVING A BULB LOCATED IN THE MAIN TANK EXTERNALLY OF SAID CHAMBER AT A LEVEL HIGHER THAN THAT OF THE HEATING ELEMENT AND LOWER THAN THE LEVEL OF COMMUNICATION BETWEEN THE SEDIMENT CHAMBER AND THE MAIN TANK.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |