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Replaceable friction element for dental prosthesis

  • US 5,275,560 A
  • Filed: 03/05/1992
  • Issued: 01/04/1994
  • Est. Priority Date: 03/13/1991
  • Status: Expired due to Fees
First Claim
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1. A replaceable friction element made of an elastic material for emplacement in one of a male part and a female part of a dental prosthesis wherein the female part telescopes over the male part in a first direction, for frictionally holding the parts together;

  • the friction element comprising a shank, the shank having an end, a head on the end of the shank, the head having a friction surface outwardly away from the shank, the head having a bottom toward the shank, the bottom being generally taperingly shaped;

    the one part having a holding opening in it extending transversely to said first direction, the opening being correspondingly shaped for slidingly receiving the shank in the opening, whereby the friction surface frictionally engages the other part of the dental prosthesis as the male and female parts telescope in said first direction, transversely with respect to said friction element;

    the opening widening in the region adjacent the bottom of the head of the friction element, receiving the bottom of the head, whereby the bottom of the head is free to expand into said opening; and

    the angle of widening of the opening in the part toward the head being shaped so as to accommodate said head when compressed by engagement with the other part, as a function of the elasticity and coefficient of friction of the head and the shape of the head.

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