Metal reinforced pump cover of an electrically driven air pump

  • US 5,823,753 A
  • Filed: 09/28/1995
  • Issued: 10/20/1998
  • Est. Priority Date: 10/29/1994
  • Status: Expired due to Term
First Claim
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1. An electrically driven air pump comprising a housing including an electric motor in one section of the housing and a pump mechanism coupled to the motor in another section of the housing, said housing including a pump cover on said one section enclosing said pump mechanism, said pump cover being made of plastic and having an end wall including a metal reinforcement member joined by injection molding to said end wall, said metal reinforcement member having inner and outer perimetral surfaces and aperture means between said surfaces through which the plastic of said end wall extends by said injection molding to anchor the reinforcement member to said end wall, said outer perimetral surface of the metal reinforcement member being free and unobstructed for undergoing dimensional change due to temperature variation.

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