US3138649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke hood for electric furnaces and the like
Assignee: Von Roll AG
•
Filing: 1960-10-03
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Granted: 1964-06-23
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 Erni Enrico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
F; F27; F27D; F27D17/00; F27D17/30; F27D17/304; B; B08; B08B; B08B15/00; B08B15/02; C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE COMBINATION WITH AN OPEN ELECTRIC FURNACE HAVING AN ELECTRODE HOLDER AND AN ELECTRODE MEMBER MOUNTED IN SAID HOLDER, OF A SMOKE HOOD MOUNTED OVER AND NORMALLY CLOSING THE OPEN END OF SAID ELECTRIC FURNACE WHICH COMPRISES A HOUSING MEMBER ARRANGED CIRCUMJACENT SAID ELECTRODE HOLDER, SAID HOUSING MEMBER INCLUDING SEPARATE ADJACENTLY ARRANGED SLIDABLE WALL MEMBERS MOUNTED FOR TELESCOPIC MOVEMENT, SAID WALL MEMBERS BEING PROVIDED WITH MEANS SUPPORTABLY INTERCONNECTING SAID ADJACENT WALL MEMBERS FOR SLIDING TELESCOPIC MOVEMENT TO
Claim 2
Dependent Claim
77 words
THE COMBINATION WITH AN OPEN ELECTRIC FURNACE HAVING AN ELECTRODE HOLDER AND AN ELECTRODE MEMBER MOUNTED IN SAID HOLDER, OF A SMOKE HOOD MOUNTED OVER AND NORMALLY CLOSING THE OPEN END OF SAID ELECTRIC FURNACE WHICH COMPRISES A HOUSING MEMBER ARRANGED CIRCUMJACENT SAID ELECTRODE HOLDER, SAID HOUSING MEMBER INCLUDING SEPARATE ADJACENTLY ARRANGED SLIDABLE WALL MEMBERS MOUNTED FOR TELESCOPIC MOVEMENT, SAID WALL MEMBERS BEING PROVIDED WITH MEANS SUPPORTABLY INTERCONNECTING SAID ADJACENT WALL MEMBERS FOR SLIDING TELESCOPIC MOVEMENT TO
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |