US2729221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for gas burning appliances
Assignee: Individual
•
Filing: 1950-09-12
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Granted: 1956-01-03
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Expires: 1970-09-12
Abstract
No abstract record available.
Inventors
- 👤 Gorham George
- 👤 Grageroff Ignace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:55
CPC Classifications
F; F17; F17D; F17D5/00; F17D5/005; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819; Y10T137/1827; Y10T137/1842; Y10T137/1915; Y10T137/6416; Y10T137/6606; Y10T137/8158; Y10T137/8225; Y10T137/8242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SAFETY DEVICE OF THE CHARACTER DESCRIBED, OPERABLE IN RESPONSE TO THE GENERATION OF HEAT RESULTING FROM THE OXIDATION OF HEATING OR ILLUMINATING GAS IN THE PRESENCE OF A CATALYST, COMPRISING A CONTAINER FOR SAID CATALYST HAVING A PROVISION FOR EXPOSING THE CATALYST TO ESCAPING GAS, FUSIBLE MEANS POSITIONED IN HEAT EXCHANGE RELATION WITH SAID CATALYST, AND AN ELECTRIC FLOW CONTROL CIRCUIT INCLUDING SAID FUSIBLE MEANS SO AS TO BE NORMALLY COMPLETED, UNDER THE CONTROL OF SAID FUSIBLE MEANS, AND SO AS TO BE
Claim 2
Dependent Claim
84 words
A SAFETY DEVICE OF THE CHARACTER DESCRIBED, OPERABLE IN RESPONSE TO THE GENERATION OF HEAT RESULTING FROM THE OXIDATION OF HEATING OR ILLUMINATING GAS IN THE PRESENCE OF A CATALYST, COMPRISING A CONTAINER FOR SAID CATALYST HAVING A PROVISION FOR EXPOSING THE CATALYST TO ESCAPING GAS, FUSIBLE MEANS POSITIONED IN HEAT EXCHANGE RELATION WITH SAID CATALYST, AND AN ELECTRIC FLOW CONTROL CIRCUIT INCLUDING SAID FUSIBLE MEANS SO AS TO BE NORMALLY COMPLETED, UNDER THE CONTROL OF SAID FUSIBLE MEANS, AND SO AS TO BE
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |