Patent US4189541A successfully refreshed from Google Patents.
US4140100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared heater
Assignee: Individual
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Filing: 1977-05-25
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Granted: 1979-02-20
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Expires: 1997-05-25
Abstract
Abstract An infrared heater comprises a mirror-like reflecting plate, a combustion cylinder disposed in front of the reflecting plate, and a radiating cylinder disposed concentrically around the combustion cylinder. On the peripheral surface of the inner combustion cylinder are bored a plurality of apertures, while on the peripheral surface of the outer radiating cylinder are formed a plurality of apertures in offset positions in no radial alignment with the apertures of the combustion cylinder.
Inventors
- 👤 Masamitsu Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/002; F24; F24C; F24C1/00; F24C1/08; F24C1/10; F24C1/12; F24C3/00; F24C3/08; F24C3/082
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An infrared heater comprising; a mirror-like, semicylindrical reflecting plate, multilayer cylinder means composed of a combustion cylinder having a plurality of apertures uniformly spaced about the circumference and length thereof and a radiating cylinder having a plurality of offset apertures uniformly spaced about the circumference and length thereof and being in non-radial alignment with the apertures of the combustion cylinder, said multilayer cylinder means being arranged in front of the reflecting plate, and burner means for ejecting a spray of fuel into the combustion cylinder of the multilayer means, whereby no flame through the apertures of the combustion cylinder is blown off to the open air through the apertures of the radiating cylinder.
Claim 2
Dependent Claim
113 words
An infrared heater comprising; a mirror-like, semicylindrical reflecting plate, multilayer cylinder means composed of a combustion cylinder having a plurality of apertures uniformly spaced about the circumference and length thereof and a radiating cylinder having a plurality of offset apertures uniformly spaced about the circumference and length thereof and being in non-radial alignment with the apertures of the combustion cylinder, said multilayer cylinder means being arranged in front of the reflecting plate, and burner means for ejecting a spray of fuel into the combustion cylinder of the multilayer means, whereby no flame through the apertures of the combustion cylinder is blown off to the open air through the apertures of the radiating cylinder.
Claim 3
Dependent Claim
33 words
An infrared heater according to claim 1 wherein the burner means is located at the side of the multilayer cylinder means to eject fuel in the axial direction of the multilayer cylinder means.
Claim 4
Dependent Claim
41 words
An infrared heater according to claim 2 wherein the ratio of the total area of the apertures of the combustion cylinder to the surface area at the central portion of the combustion cylinder is higher than that at each end portion.
Claim 5
Dependent Claim
32 words
An infrared heater according to claim 3 wherein the number per unit surface of the apertures at the central portion of the combustion cylinder is larger than that at each end portion.
Claim 6
Dependent Claim
33 words
An infrared heater according to claim 3 wherein the diameter of the apertures at the central portion of the combustion cylinder is larger than the diameter of the apertures at each end portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |