Patent US3254642A successfully refreshed from Google Patents.
US3254642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room heater with vented circulation
Assignee: Individual
•
Filing: 1965-03-22
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Granted: 1966-06-07
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Milton A Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/04; F24C3/042; F24B; F24B1/00; F24B1/18; F24B1/1808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A ROOM HEATER COMPRISING: (A) A HEARTH HAVING A FLAT SHEET METAL BASE PROVIDED WITH REARWARDLY PLACED AIR INTAKES, (B) A SHEET METAL OUTER JACKET HAVING FRONT, SIDE AND REAR WALLS EXTENDING UPWARDLY FROM SAID HEARTH BASE, THE INTERIOR OF SAID JACKET BEING OPEN TO THE MEMTIONED AIR INTAKES, (C) UPPER AND LOWER SETS OF LOUVERED OPENINGS IN THE SIDE WALLS OF SAID JACKET OPEN TO HE INTERIOR THEREOF, (D) SAID JACKET HAVING AN OPENING IN THE FRONT WALL THEREOF WITH A FRAME ENCLOSING THE TOP AND SIDES OF SAID OPENING, SAID FRAME EXTENDING UPWARDLY FROM THE HEARTH BASE, (E) A TOP WALL FOR SAID JACKET CLOSING THE INTERIOR SPACE THEREOF FROM ABOVE, (F) A HEATING ELEMENT ON SAID HEARTH BASE AND ENCLOSED WITHIN THE INTERIOR OF THE JACKET, (G) SAID ELEMENT COMPRISING VERTICAL, ENCLOSING SIDE AND REAR WALLS THAT ARE WHOLLY SPACED FROM THE SIDE
Claim 2
Dependent Claim
146 words
A ROOM HEATER COMPRISING: (A) A HEARTH HAVING A FLAT SHEET METAL BASE PROVIDED WITH REARWARDLY PLACED AIR INTAKES, (B) A SHEET METAL OUTER JACKET HAVING FRONT, SIDE AND REAR WALLS EXTENDING UPWARDLY FROM SAID HEARTH BASE, THE INTERIOR OF SAID JACKET BEING OPEN TO THE MEMTIONED AIR INTAKES, (C) UPPER AND LOWER SETS OF LOUVERED OPENINGS IN THE SIDE WALLS OF SAID JACKET OPEN TO HE INTERIOR THEREOF, (D) SAID JACKET HAVING AN OPENING IN THE FRONT WALL THEREOF WITH A FRAME ENCLOSING THE TOP AND SIDES OF SAID OPENING, SAID FRAME EXTENDING UPWARDLY FROM THE HEARTH BASE, (E) A TOP WALL FOR SAID JACKET CLOSING THE INTERIOR SPACE THEREOF FROM ABOVE, (F) A HEATING ELEMENT ON SAID HEARTH BASE AND ENCLOSED WITHIN THE INTERIOR OF THE JACKET, (G) SAID ELEMENT COMPRISING VERTICAL, ENCLOSING SIDE AND REAR WALLS THAT ARE WHOLLY SPACED FROM THE SIDE
References Cited (Backward Citations)
US1807014A
Cited
US1991513A
Cited
US1942936A
Cited
US2163928A
Cited
US2716976A
Cited
US2770228A
Cited
US2789554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |