Localized heating unit for desks

Electric resistance heating devices – Heating devices – Radiant heater

Patent

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Details

392424, 392430, 392431, 392436, H05B 322

Patent

active

052147398

ABSTRACT:
A heating unit includes a frame and a substantially flat radiant heating surface supported by the frame. A generally parabolic trough with a reflective inner surface is mounted along one edge of the periphery of the heating surface, and contains an elongate heating element. Further, a reflective flap is hingedly mounted adjacent the trough but remote from the heating surface, disposed so that at least a portion of the radiant energy reflected out of the trough by the reflective inner surface is re-reflected by the flap, depending upon its angulation with respect to the heating surface.

REFERENCES:
patent: 2032622 (1936-03-01), Le Guillou
patent: 2479425 (1949-08-01), Steingruber
patent: 2535393 (1950-12-01), Daugert
patent: 2612825 (1952-10-01), Walker
patent: 2613308 (1952-10-01), Mirand
patent: 2678372 (1954-05-01), Salton
patent: 2700095 (1955-01-01), Needham
patent: 2715668 (1955-08-01), Booker et al.
patent: 3309500 (1967-03-01), Reynolds
patent: 3961157 (1976-06-01), Miller et al.
patent: 4052588 (1977-10-01), Nakamura et al.

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