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Lubricant-free elastomeric gasket

  • US 4,893,843 A
  • Filed: 03/13/1989
  • Issued: 01/16/1990
  • Est. Priority Date: 03/13/1989
  • Status: Expired due to Fees
First Claim
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1. In an elastomeric gasket for incorporation into a segmented pipe coupling comprised of arcuate coupling segments, said elastomeric gasket being of an arcuate length greater than the arcuate length of a said arcuate coupling segment and having at least one sealing lip extending in a generally axially direction on a radially inner surface thereof, the improvement comprising:

  • a first portion of said sealing lip of a first radius intermediate the ends of said gasket; and

    ,second portions of said sealing lip extending between the ends of said first portion and the respective ends of said gasket, each said second portion being of a radius greater than said first portion, and, at least equal in radius to the external radius of a pipe for which the segmented pipe coupling is intended;

    whereby said elastomeric gasket can be positioned over a said intended pipe in the substantial absence of frictional engagement with said pipe.

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