US4079781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heater
Assignee: ENERGIKONTROLL AS
•
Filing: 1976-04-13
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Granted: 1978-03-21
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Expires: 1996-04-13
Abstract
Abstract Heat transfer element, in particular radiant heater, comprising tubes for a circulating fluid, such as water, oil or vapor, and radiation panels formed with profile portions adapted to be mounted in good thermal contact with the tube surface, the tubes having a polygonal cross-section of which two adjacent sides are adapted to each engage one plane surface of the profile portion being formed in a single or in two contiguous radiation panels, and that the plane surfaces of the profile portion are pressed elastically resiliently against said adjacent sides of the tube.
Inventors
- 👤 Per Wesseltoft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:52
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/14; F28F1/20; F24; F24D; F24D3/00; F24D3/12; F24D3/14; F24D3/148; F24S; F24S10/00; F24S10/70; F24S10/75; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/0535; F24D3/16; F24D3/165; Y; Y02; Y02B; Y02B30/00; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
Heat transfer element, in particular radiant heater, comprising tubes for a circulating fluid, such as water, oil or vapour, and radiation panels formed with profile portions adapted to be mounted in good thermal contact with the tube surface, the tubes having a polygonal cross-section of which two adjacent sides are adapted to each engage one plane surface of the profile portion of a radiation panel, and the plane surfaces of the profile portion being pressed elastically resiliently against said adjacent sides of the tube, and wherein each radiation panel is formed with at least one profile portion having a V-shaped cross-section, and the angle between the adjacent sides of the tube on which the radiation panel is mounted being slightly greater than the angle between the plane surfaces of the profile portion when the radiation panel is removed.
Claim 2
Dependent Claim
138 words
Heat transfer element, in particular radiant heater, comprising tubes for a circulating fluid, such as water, oil or vapour, and radiation panels formed with profile portions adapted to be mounted in good thermal contact with the tube surface, the tubes having a polygonal cross-section of which two adjacent sides are adapted to each engage one plane surface of the profile portion of a radiation panel, and the plane surfaces of the profile portion being pressed elastically resiliently against said adjacent sides of the tube, and wherein each radiation panel is formed with at least one profile portion having a V-shaped cross-section, and the angle between the adjacent sides of the tube on which the radiation panel is mounted being slightly greater than the angle between the plane surfaces of the profile portion when the radiation panel is removed.
Claim 3
Dependent Claim
64 words
Element according to claim 1, wherein each radiation panel is formed with at least one profile portion having a V-shaped cross-section, and the angle between the plane surfaces of the profile portion in the non-mounted condition of the radiation panel, is a little less than the angle between the adjacent sides of the tube on which the radiation panel is adapted to be mounted.
Claim 4
Dependent Claim
29 words
Element according to claim 1, wherein the tube has a square cross-section and the angle between the plane surfaces of the profile portion is a little less than 90°.
Claim 5
Dependent Claim
30 words
Element according to claim 1, wherein the width of the plane surfaces of the profile portion is approximately equal to the width of the respective adjacent sides of the tube.
Claim 6
Dependent Claim
54 words
Element according to claim 1, wherein the tube is secured to the radiation panel by means of diagonally outwardly directed bendable pins being preferably made of annealed iron wire which is upset butt welded to the side edge of the tube, and which is adapted to extend through corresponding openings in the profile portion.
References Cited (Backward Citations)
US2734259A
Cited
US2594232A
Cited
US2558345A
Cited
FR1007540A
Cited
US2823903A
Cited
US3120869A
Cited
US3224503A
Cited
FR1359891A
Cited
US3799257A
Cited
US3828846A
Cited
US3926358A
Cited
US4011856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |