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Temperature sensor housing

  • US 5,829,880 A
  • Filed: 12/20/1996
  • Issued: 11/03/1998
  • Est. Priority Date: 03/06/1996
  • Status: Expired due to Fees
First Claim
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1. A temperature sensing system comprising:

  • a medium conducting pipe, a tube, an integral temperature sensing plug-in unit, and a bush housing,the tube being attached to the pipe at an angle and constructed and arranged to receive the integral temperature sensing plug-in unit,the bush housing having a main body part and a male projection extending outwardly from the main body part and having elastic annular seal over the male projection, and electrical contact lines extend through the bush housing,the integral temperature sensing plug-in unit being constructed and arranged for insertion into the tube as a single piece and having a pair of electrical contact pins attached to a themistor body and a stopper molded over a portion of the electrical contact pins so that a free end of the electrical contact pins extends outwardly from the stopper, the stopper further comprising projections extending outwardly and constructed and arranged to dig into an inner surface of the tube when the integral temperature sensing plug-in unit is inserted into the tube, and wherein the integral temperature sensing plug-in unit is constructed and arranged as a single piece to be inserted in the tube,the tube comprising a surface defining a conical shaped recess for receiving the thermistor body of the integral temperature sensing plug-in unit, the inner surface of the tube having a shoulder adjacent the surface defining the conical shaped recess, the shoulder being positioned to limit the forward movement of the integral temperature sensing plug-in unit, a stopper receiving portion adjacent the shoulder constructed and arranged so that the projections on the stopper dig into the surface defining the stopper receiving portion when the integral temperature sensing plug-in unit is inserted into the tube, the tube further comprising a shroud at one end for surrounding the free ends of the pins and constructed and arranged to receive at least a portion of the male projection and annular seal of the bush housing.

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