US3296354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace
Assignee: Basic Products Corp
•
Filing: 1964-02-05
•
Granted: 1967-01-03
•
Expires: 1984-02-05
Abstract
No abstract record available.
Inventors
- 👤 Ewald R Werych
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; H; H05; H05B; H05B3/00; H05B3/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A FURNACE, A CHAMBER FORMED OF CERAMIC MEMBERS HAVING HEATING MEANS THEREIN; AN INSULATING MASS SURROUNDING SAID CHAMBER; AIR PASSAGE MEANS EXTENDING THROUGH SAID INSULATING MASS ON AT LEAST ONE SIDE OF AND SPACED FROM SAID CHAMBER TO INCREASE THE HEAT LOSS FROM SAID MASS; MEANS FOR VARYING THE CROSS SECTIONAL DIMENSION OF SAID PASSAGE MEANS, SAID MEANS COMPRISING SLIDABLE PANEL MEANS INCLUDING OTHER AIR PASSAGE MEANS THAT ALIGN WITH THE AIR PASSAGE MEANS IN SAID INSULATING MASS WHEN SAID PANEL MEANS IS SLIDABLY MOVED; TEMPERATURE RESPONSIVE MEANS; AND MEANS CONNECTED TO SAID TEMPERATURE RESPONSIVE MEANS FOR CONTROLLING THE TEMPERATURE WITHIN SAID CHAMBER.
Claim 2
Dependent Claim
104 words
IN A FURNACE, A CHAMBER FORMED OF CERAMIC MEMBERS HAVING HEATING MEANS THEREIN; AN INSULATING MASS SURROUNDING SAID CHAMBER; AIR PASSAGE MEANS EXTENDING THROUGH SAID INSULATING MASS ON AT LEAST ONE SIDE OF AND SPACED FROM SAID CHAMBER TO INCREASE THE HEAT LOSS FROM SAID MASS; MEANS FOR VARYING THE CROSS SECTIONAL DIMENSION OF SAID PASSAGE MEANS, SAID MEANS COMPRISING SLIDABLE PANEL MEANS INCLUDING OTHER AIR PASSAGE MEANS THAT ALIGN WITH THE AIR PASSAGE MEANS IN SAID INSULATING MASS WHEN SAID PANEL MEANS IS SLIDABLY MOVED; TEMPERATURE RESPONSIVE MEANS; AND MEANS CONNECTED TO SAID TEMPERATURE RESPONSIVE MEANS FOR CONTROLLING THE TEMPERATURE WITHIN SAID CHAMBER.
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |