US3306334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space heaters
Assignee: Individual
•
Filing: 1965-04-26
•
Granted: 1967-02-28
•
Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Goubsky Gregory Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:02
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/087; F23; F23D; F23D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SPACE HEATER SYSTEM COMPRISING A PRIMARY COMBUSTION CHAMBER, SAID CHAMBER HAVING AN OUTER CASING IN TWO COAXIAL PARTS FOR EASE OF ASSEMBLY AND MAINTENANCE, AN AIR INLET LEADING TANGENTIALLY INTO A FIRST ONE OF SAID PARTS, A FUEL BURNER LOCATED IN SAID FIRST PART, A BELL-SHAPED CASING ALSO LOCATED IN SAID FIRST PART AND FORMING SAID COMBUSTION CHAMBER PROPER, DISTANCE PIECES INTERCONNECTING SAID FIRST PART OF SAID OUTER CASING AND SAID BELLSHAPED CASING, ONE END OF SAID FIRST PART OF SAID OUTER CASING TERMINATING IN A POT-SHAPED CASING, A FLANGE ON SAID POT-SHAPED CASING, SAID FLANGE FORMING A BEARING SURFACE FOR SAID DISTANCE PIECES, A WALL FOR SAID BURNER, AN ANNULAR WALL BETWEEN SAID BELL-SHAPED CASING AND SAID FLANGE, SAID ANNULAR WALL DEFINING WITH SAID WALL OF
Claim 2
Dependent Claim
128 words
A SPACE HEATER SYSTEM COMPRISING A PRIMARY COMBUSTION CHAMBER, SAID CHAMBER HAVING AN OUTER CASING IN TWO COAXIAL PARTS FOR EASE OF ASSEMBLY AND MAINTENANCE, AN AIR INLET LEADING TANGENTIALLY INTO A FIRST ONE OF SAID PARTS, A FUEL BURNER LOCATED IN SAID FIRST PART, A BELL-SHAPED CASING ALSO LOCATED IN SAID FIRST PART AND FORMING SAID COMBUSTION CHAMBER PROPER, DISTANCE PIECES INTERCONNECTING SAID FIRST PART OF SAID OUTER CASING AND SAID BELLSHAPED CASING, ONE END OF SAID FIRST PART OF SAID OUTER CASING TERMINATING IN A POT-SHAPED CASING, A FLANGE ON SAID POT-SHAPED CASING, SAID FLANGE FORMING A BEARING SURFACE FOR SAID DISTANCE PIECES, A WALL FOR SAID BURNER, AN ANNULAR WALL BETWEEN SAID BELL-SHAPED CASING AND SAID FLANGE, SAID ANNULAR WALL DEFINING WITH SAID WALL OF
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |