Patent US3106239A successfully refreshed from Google Patents.
US3106239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas safety device
Assignee: Zimmermann and Jansen GmbH
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Filing: 1960-03-29
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Granted: 1963-10-08
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Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jansen Hermann
- 👤 Walther Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:46
CPC Classifications
C; C21; C21B; C21B9/00; C21B9/10; C21B9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A HOT BLAST STOVE ADAPTED TO BE HEATED AND TO SUPPLY HOT BLAST TO A BLAST FURNACE; GAS CONDUIT MEANS FOR INTRODUCING GAS INTO SAID STOVE, AIR CONDUIT MEANS FOR INTRODUCING AIR INTO SAID STOVE, VALVE MEANS DISPOSED IN SAID GAS CONDUIT MEANS AND ADAPTED TO BE ADJUSTABLY OPENED FOR REGULATING THE VOLUME OF GAS INTRODUCED INTO SAID STOVE, ELECTRICALLY OPERATED MEANS ADAPTED TO BE OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE EXTENT OF OPENING AND CLOSING OF THE LATTER, AND MEANS FOR
Claim 2
Dependent Claim
86 words
IN A HOT BLAST STOVE ADAPTED TO BE HEATED AND TO SUPPLY HOT BLAST TO A BLAST FURNACE; GAS CONDUIT MEANS FOR INTRODUCING GAS INTO SAID STOVE, AIR CONDUIT MEANS FOR INTRODUCING AIR INTO SAID STOVE, VALVE MEANS DISPOSED IN SAID GAS CONDUIT MEANS AND ADAPTED TO BE ADJUSTABLY OPENED FOR REGULATING THE VOLUME OF GAS INTRODUCED INTO SAID STOVE, ELECTRICALLY OPERATED MEANS ADAPTED TO BE OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE EXTENT OF OPENING AND CLOSING OF THE LATTER, AND MEANS FOR
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |