US3222500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water storing and heating apparatus in devices for brewing and dispensing beverages
Assignee: Coffee-Mat Corp
•
Filing: 1964-07-29
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Granted: 1965-12-07
•
Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Sollie W Small
- 👤 Herman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
A HOT WATER SUPPLY SYSTEM COMPRISING A STORAGE TANK CONTAINING WATER, MEANS FORSUPPLYING WATER TO SAID TANK, MEANS INCLUDING AN ELECTRICAL HEATING UNIT FOR HEATING THE WATER IN SAID TANK, A PIPE COMMUNICATING WITH THE UPPER PART OF SAID TANK AND WITH THE ATMOSPHERE AND EXTENDING TO A POINT ABOVE THE WATER LEVEL IN SAID TANK, A THERMOSTATIC SWITCH IN OPERATIVE RELATION TO SAID HEATING UNIT, SAID THERMOSTATIC SWITCH INCLUDING A THERMOSTATIC ELEMENT IN HEAT TRANSFER RELATIONSHIP WITH A WALL OF SAID PIPE AND POSITIONED EXTERNAL TO SAID TANK AND SAID PIPE, SAID THERMOSTATIC ELEMENT BEING RESPONSIVE TO A TEMPERATURE NOT EXCEEDING 100*C. TO ACTUATE SAID SWITCH, AND MEANS RESPONSIVE TO SAID SWITCH FOR DEENERGIZING SAID HEATING ELEMENT ONLY UPON THE BOILING OF SAID WATER IN SAID TANK.
References Cited (Backward Citations)
US1095517A
Cited
US1142420A
Cited
US1549033A
Cited
US2291118A
Cited
US2393313A
Cited
US3060905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |