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Shielded electrical contact spring probe assembly

  • US 5,175,493 A
  • Filed: 10/11/1991
  • Issued: 12/29/1992
  • Est. Priority Date: 10/11/1991
  • Status: Expired due to Term
First Claim
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1. A shielded electrical contact spring probe assembly comprising:

  • a) a barrel formed of conductive material and having an open end and a remote end, said remote end providing means for an electrical path through said barrel;

    b) a core of dielectric material coaxially mounted within said barrel and having an open end coincident with said barrel open end, said core having an axial bore therein;

    c) an electrical contact spring probe reciprocally seated within said core bore and having a tip end axially extensible beyond said core open end, said probe having means biasing said probe to an outwardly extended position, said probe tip end having means for electrical contact with a target;

    d) a shield formed of electrically conductive material surrounding said core and extending the full length thereof, and coincidentally terminating with said core at said open end, and said shield having means for an electrical conductive path through said shield and said barrel;

    e) said shield and said barrel being separated to form a space;

    f) a shielding plunger, formed of electrically conductive material, located in said space and having a seating end having a biasing means in said seating end, said plunger having means biasing said plunger to a outwardly extended position terminating coincidentally and surrounding said probe tip when said probe tip is in an outwardly extended position for fitting snugly against a target and shielding said probe tip against emission of RF energy.

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