Patent US3178557A successfully refreshed from Google Patents.
US3178557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heating unit
Assignee: Individual
•
Filing: 1962-10-08
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Granted: 1965-04-13
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Harry M Umann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/542
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN APPARATUS FOR HEATING LIQUIDS COMPRISING A FIRST CONTAINER AND A SECOND CONTAINER, SAID FIRST CONTAINER BEING POSITIONED ABOVE SAID SECOND CONTAINER SO AS TO BE CAPABLE OF SUPPLYING LIQUID TO SAID SECOND CONTAINER, A THERMOSTAT MOUNTED IN SAID SECOND CONTAINER, AN INLET MEANS IN SAID SECOND CONTAINER, SAID INLET MEANS BEING IN COMMUNICATION WITH SAID FIRST CONTAINER AND BEING POSITIONED SUCH THAT LIQUID FLOWING THERETHROUGH WILL BE DIRECTED AT SAID THERMOSTAT, A HEATING ELEMENT MOUNTED IN, SAID SECOND CONTAINER, AND OPERATIVELY CONNECTED TO SAID THERMOSTAT FOR CONTROL THEREBY, AN ANNULAR SLEEVE MEMBER MOUNTED IN SAID SECOND CONTAINER SPACED FROM AND SURROUNDING AT LEAST A PORTION OF SAID HEATING ELEMENT, AN OUTLET MEANS IN SAID SECOND CONTAINER, SAID SLEEVE BEING CONNECTED TO SAID OUTLET MEANS.
Claim 2
Independent Claim
125 words
AN APPARATUS FOR HEATING LIQUIDS COMPRISING A FIRST CONTAINER AND A SECOND CONTAINER, SAID FIRST CONTAINER BEING POSITIONED ABOVE SAID SECOND CONTAINER SO AS TO BE CAPABLE OF SUPPLYING LIQUID TO SAID SECOND CONTAINER, A THERMOSTAT MOUNTED IN SAID SECOND CONTAINER, AN INLET MEANS IN SAID SECOND CONTAINER, SAID INLET MEANS BEING IN COMMUNICATION WITH SAID FIRST CONTAINER AND BEING POSITIONED SUCH THAT LIQUID FLOWING THERETHROUGH WILL BE DIRECTED AT SAID THERMOSTAT, A HEATING ELEMENT MOUNTED IN, SAID SECOND CONTAINER, AND OPERATIVELY CONNECTED TO SAID THERMOSTAT FOR CONTROL THEREBY, AN ANNULAR SLEEVE MEMBER MOUNTED IN SAID SECOND CONTAINER SPACED FROM AND SURROUNDING AT LEAST A PORTION OF SAID HEATING ELEMENT, AN OUTLET MEANS IN SAID SECOND CONTAINER, SAID SLEEVE BEING CONNECTED TO SAID OUTLET MEANS.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |