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Plastic thermal probe assembly with press fit sensor

  • US 5,046,857 A
  • Filed: 05/23/1990
  • Issued: 09/10/1991
  • Est. Priority Date: 05/23/1990
  • Status: Expired due to Fees
First Claim
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1. A temperature responsive probe assembly having a thermistor for sensing the temperature of a medium in heat transfer relationship with the probe assembly and for producing an electrical signal which varies in accordance with changes in the temperature of the medium;

  • and a pair of terminals connected to the thermistor that are adapted to be connected to an electrical connector comprising in combination;

    a premolded unitary one piece plastic shell having an open receptacle end and an opposite end defining a probe portion and means for mounting the plastic shell on a member so that the probe portion is in heat exchange relationship with a medium whose temperature is to be sensed;

    the plastic shell further including a bore for containing the pair of terminals a premolded member, and the thermistor, the bore being formed by deformable walls of the plastic shell;

    a sub-assembly comprising the thermistor, the pair of terminals and the premolded mounting member formed around the pair of terminals;

    the sub-assembly being insertable into the bore of the plastic shell for positioning the thermistor in the bore of the plastic shell; and

    interlock means between the premolded mounting member and an inside surface of the plastic shell defining the probe for locking the pair of terminals to the plastic shell and for locating said thermistor in the plastic shell in spaced relationship with the probe portion;

    the pair of terminals having end portions extending from an end of the premolded mounting member for connection with an electrical connector plugable into the receptacle end of the plastic shell.

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