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PTC heating unit suitable for use in motor vehicles

  • US 20050133490A1
  • Filed: 10/07/2004
  • Published: 06/23/2005
  • Est. Priority Date: 10/07/2003
  • Status: Active Grant
First Claim
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1. A heating unit suitable for use in a motor vehicle, comprising:

  • a PTC heating element;

    at least one heat transfer element arranged around the PTC element for improved transfer of heat to air flowing through the heating unit; and

    a plastic frame holding the PTC heating element and heat transfer elements, said plastic frame having a two-part design.

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