US3244164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space heater
Assignee: Individual
•
Filing: 1963-04-03
•
Granted: 1966-04-05
•
Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Leo J Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
CPC Classifications
F; F24; F24C; F24C1/00; F24B; F24B1/00; F24B1/18; F24B1/191; F24C13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A SPACE HEATER COMPRISING IN COMBINATION A LOW CYLINDRICAL BODY HAVING A FLAT TOP AND BOTTOM, SAID TOP HAVING AN AXIAL OPENING THERETHROUGH, A FRUSTO-CONICAL FIREBOX OF SMALLER DIAMETER SUPPORTED WITHIN SAID BODY, SAID FIREBOX BEING OPEN AT ITS SMALLER DIAMETER TOP REGISTERING AND JOINED FLUSH WITH THE AXIAL OPENING OF THE BODY TOP FORMING A CLOSED CHAMBER WITHIN SAID BODY COMPLETELY SURROUNDING SAID FIREBOX EXCEPT AT ITS OPEN TOP, A PLURALITY OF COMBUSTION AIR INLET TUBES COMMUNICATING FROM ADJACENT THE BOTTOM OF THE FIREBOX TO THE ATMOSPHERE THROUGH THE WALL OF THE BODY AND A CIRCULAR HOOD AND AXIAL FLUE ADJUSTABLY SUPPORTED ABOVE THE TOP OF THE CYLINDRICVAL BODY BUT SPACED THEREFROM PROVIDING AN UNOBSTRUCTED TRANSVERSE SPACE THEREBETWEEN.
Claim 2
Dependent Claim
119 words
A SPACE HEATER COMPRISING IN COMBINATION A LOW CYLINDRICAL BODY HAVING A FLAT TOP AND BOTTOM, SAID TOP HAVING AN AXIAL OPENING THERETHROUGH, A FRUSTO-CONICAL FIREBOX OF SMALLER DIAMETER SUPPORTED WITHIN SAID BODY, SAID FIREBOX BEING OPEN AT ITS SMALLER DIAMETER TOP REGISTERING AND JOINED FLUSH WITH THE AXIAL OPENING OF THE BODY TOP FORMING A CLOSED CHAMBER WITHIN SAID BODY COMPLETELY SURROUNDING SAID FIREBOX EXCEPT AT ITS OPEN TOP, A PLURALITY OF COMBUSTION AIR INLET TUBES COMMUNICATING FROM ADJACENT THE BOTTOM OF THE FIREBOX TO THE ATMOSPHERE THROUGH THE WALL OF THE BODY AND A CIRCULAR HOOD AND AXIAL FLUE ADJUSTABLY SUPPORTED ABOVE THE TOP OF THE CYLINDRICVAL BODY BUT SPACED THEREFROM PROVIDING AN UNOBSTRUCTED TRANSVERSE SPACE THEREBETWEEN.
References Cited (Backward Citations)
DE64154C
Cited
DE221763C
Cited
US346694A
Cited
US579615A
Cited
FR569160A
Cited
US2159284A
Cited
US1994383A
Cited
GB531172A
Cited
US2704188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |