Electric heating arrangement

Details Electric heating arrangement Electric heating arrangement

2005-01-25

2005-01-25

Evans, Robin O. (Department: 3742)

Electric heating

Heating devices

With heater-unit housing, casing, or support means

C219S530000, C219S540000, C219S544000, C338S221000

Reexamination Certificate

active

06847017

ABSTRACT:
The electric heating arrangement (1) has a tubular housing (2) in which is provided at least one PTC heating element (20) and at least one pair of metallic heat dissipators (9) between which the at least one heating element (20) is clamped and which for this purpose each comprise a base portion (10) facing the at least one heating element and one or two curved legs (15) projecting from said base portion, which adapt themselves resiliently to the inner surface of the surrounding wall of the housing (2). The invention provides that the legs (15) taper toward their free ends and/or that the base portion (10) is thicker than the legs (15) projecting it.

REFERENCES:
patent: 3996447 (1976-12-01), Bouffard et al.
patent: 4147927 (1979-04-01), Pirotte
patent: 4228343 (1980-10-01), Kanner et al.
patent: 4468555 (1984-08-01), Adachi et al.
patent: 4763102 (1988-08-01), Ritt
patent: 4822980 (1989-04-01), Carbone et al.
patent: 6180930 (2001-01-01), Wu
patent: 2614433 (1976-10-01), None
patent: 3616460 (1987-11-01), None
patent: 4040258 (1992-07-01), None
Heat Exchanger Design by Arthur P. Fraas and M. Necati Ozisik, 1965, John Wiley and Sons, Inc. p. No. 33, 347,352.

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