US3884215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant space heater
Assignee: Individual
•
Filing: 1974-05-13
•
Granted: 1975-05-20
•
Expires: 1994-05-13
Abstract
Abstract In a radiant space heater, the end of the combustion tube into which the burner flame is projected is slidably supported in a collar which projects from a base plate having a hole for the flame to pass through, and the tube at that end is lined with heat insulating material which, on lengthwise heat expansion of the tube, seats against the base plate to form a gas tight seal.
Inventors
- 👤 Irvin L Schlosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
In a space heater, the combination of a plate having an opening therethrough for the passage of a combustion flame and having a collar surrounding said opening, a combustion tube having an end slidably mounted in and supported by said collar, and heat resistant material lining the interior of said tube at said end and movable with the tube end into a gasket sealing contact with said plate on lengthwise heat expansion of said tube.
Claim 2
Dependent Claim
75 words
In a space heater, the combination of a plate having an opening therethrough for the passage of a combustion flame and having a collar surrounding said opening, a combustion tube having an end slidably mounted in and supported by said collar, and heat resistant material lining the interior of said tube at said end and movable with the tube end into a gasket sealing contact with said plate on lengthwise heat expansion of said tube.
Claim 3
Dependent Claim
33 words
The space heater according to claim 1 in which said heat resistant material has an internal flange at its outside end to provide an increased end surface area to seat against said plate.
Claim 4
Dependent Claim
23 words
The space heater according to claim 1 in which said heat resistant material projects slightly beyond the adjacent end of the combustion tube.
Claim 5
Dependent Claim
24 words
The space heater according to claim 1 in which said plate carries bolts projecting oppositely from said collar for the attachment of a burner.
Claim 6
Dependent Claim
31 words
The space heater according to claim 1 in which the end of the combustion tube is formed with an inwardly turned tab to better retain the heat resistant material in place.
References Cited (Backward Citations)
US2606549A
Cited
US3195609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |