Electrical heater apparatus

Details Electrical heater apparatus Electrical heater apparatus

2006-01-03

2006-01-03

Evans, Robin O. (Department: 3742)

Electric heating

Heating devices

With heating unit structure

C219S544000

Reexamination Certificate

active

06982400

ABSTRACT:
A self retaining crankcase heater (10) has a tubular casing (12) of relatively flexible, thermally conductive material in which is received a PTC element (16), sandwiched by semi-cylindrical terminal blocks (14). Spring contacts (18a) are received in grooves (14c) of the terminal blocks and the assembly is potted with heat conductive material (20) and sealed with sealant (22). Locking projections (12d) are formed at open end (12c) of the casing which are lockingly received in an annular recess (24a; 26d) of a well (24; 26) in a compressor housing wall.

REFERENCES:
patent: 4236065 (1980-11-01), Yashin et al.
patent: 4282003 (1981-08-01), Yashin et al.
patent: 4395623 (1983-07-01), Shimada et al.
patent: 4480174 (1984-10-01), Hummel
patent: 4689878 (1987-09-01), Beauregard et al.
patent: 4822980 (1989-04-01), Carbone et al.
patent: 5601742 (1997-02-01), Yamashita
patent: 6455822 (2002-09-01), Chang

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