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Automobile air conditioning system hand held pressure measuring device

  • US 6,898,979 B2
  • Filed: 08/19/2003
  • Issued: 05/31/2005
  • Est. Priority Date: 08/19/2003
  • Status: Expired due to Term
First Claim
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1. A portable device for measuring the pressure in an automobile air conditioning system, comprising:

  • a hand-held housing, including;

    a socket adapted to connect to a service port of an automobile air conditioning system;

    an internal passage in communication with said socket;

    a pressure gauge disposed in said housing and selectively in communication with said internal passage; and

    a valve interposed between said internal passage and said gauge, said valve biased into a closed position sealing off said internal passage from said pressure gauge;

    wherein when said socket is engaged to a service port of an automobile air conditioning system, gas from the automobile air conditioning system enters said socket, passes through said valve, and is read by said pressure gauge.

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