PTC heating unit suitable for use in motor vehicles

Details PTC heating unit suitable for use in motor vehicles PTC heating unit suitable for use in motor vehicles

2008-07-15

2008-07-15

Robinson, Daniel L (Department: 3742)

Electric heating

Heating devices

With heating unit structure

C219S538000

Reexamination Certificate

active

07399948

ABSTRACT:
A heating unit having a PTC element, in particular for a motor vehicle, with corrugated fins (6) arranged around the PTC element (2) for improved transfer of heat to air flowing through the heating unit. The heating unit has a plastic frame (7) which is of two-part design.

REFERENCES:
patent: 5192853 (1993-03-01), Yeh
patent: 5206476 (1993-04-01), Fresch et al.
patent: 197 06 199 (1998-08-01), None
patent: 101 44 757 (2003-03-01), None
patent: 1 198 908 (2002-02-01), None
patent: 1182908 (2002-08-01), None
patent: 2 322 275 (1998-08-01), None
patent: 2322275 (1998-09-01), None

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