US4247979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heater and method of making same
Assignee: Individual
•
Filing: 1979-03-08
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Granted: 1981-02-03
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Expires: 1999-03-08
Abstract
Abstract There is disclosed a radiant heater having high efficiency, reduced cost, and longer life, and which allows rapid heat-up and cool-down. As in the prior art, a heating coil is placed in grooves formed in an insulating board; the radiating surface is a fiberglass cloth secured by adhesive to that face of the insulating board which contains the grooves and the wire coil. In making the heater of the invention, the cement is allowed to dry while the board and cloth are placed on a supporting surface with the cloth face down. The cement thus adheres primarily to that portion of the coil closest to the cloth. This manufacturing step results in a cement distribution which significantly affects both the cost, life and performance of the heater.
Inventors
- 👤 Richard H. Eck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/032; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49087
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A method of making a radiant heater panel comprising the steps of forming a groove in one surface of an insulating board, placing a heating coil in said groove, attaching a front radiating material to the grooved surface of said insulating board with a layer of cement, placing the board/material assembly in an upside-down position with the front radiating material being lowermost, and allowing the layer of cement to dry in such position.
Claim 2
Independent Claim
73 words
A method of making a radiant heater panel comprising the steps of forming a groove in one surface of an insulating board, placing a heating coil in said groove, attaching a front radiating material to the grooved surface of said insulating board with a layer of cement, placing the board/material assembly in an upside-down position with the front radiating material being lowermost, and allowing the layer of cement to dry in such position.
Claim 3
Dependent Claim
38 words
A method of making a radiant heater panel in accordance with claim 1 wherein the width of said groove relative to the diameter of said heating coil is such that the heating coil fits loosely in the groove.
Claim 4
Dependent Claim
60 words
A method of making a radiant heater panel in accordance with claim 2 wherein the cement employed is sufficiently thin such that at the start of the drying step the cement flows downward and at least 75% of the cement which adheres to the coil adheres to that half of the coil which is closest to the front radiating material.
Claim 5
Independent Claim
110 words
A method of making a radiant heater comprising the steps of forming a groove in one surface of an insulating board; placing a heating boil in said groove; attaching terminal means to the ends of said heating coil, said terminal means extending through said insulating board and out of the other surface thereof; attaching a front radiating material to the grooved surface of said insulating board with a layer of cement; placing the board/material assembly in an upside-down position with the front radiating material being lowermost; allowing the layer of cement to dry in such position; and mounting the board/material assembly in a housing with said terminal means extending therethrough.
Claim 6
Independent Claim
110 words
A method of making a radiant heater comprising the steps of forming a groove in one surface of an insulating board; placing a heating boil in said groove; attaching terminal means to the ends of said heating coil, said terminal means extending through said insulating board and out of the other surface thereof; attaching a front radiating material to the grooved surface of said insulating board with a layer of cement; placing the board/material assembly in an upside-down position with the front radiating material being lowermost; allowing the layer of cement to dry in such position; and mounting the board/material assembly in a housing with said terminal means extending therethrough.
Claim 7
Dependent Claim
37 words
A method of making a radiant heater in accordance with claim 4 wherein the width of said groove relative to the diameter of said heating coil is such that the heating coil fits loosely in the groove.
Claim 8
Dependent Claim
59 words
A method of making a radiant heater in accordance with claim 5 wherein the cement employed is sufficiently thin such that at the start of the drying step the cement flows downward and at least 75% of the cement which adheres to the coil adheres to that half of the coil which is closest to the front radiating material.
Claim 9
Dependent Claim
44 words
A method of making a radiant heater in accordance with claim 6 wherein said board/material assembly is mounted in said housing at the front thereof and further including the step of placing insulating material in said housing to the rear of said board/material assembly.
Claim 10
Dependent Claim
59 words
A method of making a radiant heater in accordance with claim 4 wherein the cement employed is sufficiently thin such that at the start of the drying step the cement flows downward and at least 75% of the cement which adheres to the coil adheres to that half of the coil which is closest to the front radiating material.
Claim 11
Dependent Claim
44 words
A method of making a radiant heater in accordance with claim 8 wherein said board/material assembly is mounted in said housing at the front thereof and further including the step of placing insulating material in said housing to the rear of said board/material assembly.
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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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |