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Connectors

  • US 3,880,452 A
  • Filed: 04/19/1973
  • Issued: 04/29/1975
  • Est. Priority Date: 04/27/1972
  • Status: Expired due to Term
First Claim
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1. A connector for receiving and sealing the end of a hollow tube and used to interconnect tubes of different diameter comprising:

  • a flexible inner tubular member having a central through passage having a diameter approximately equal to that of the smallest tube to be accommodated with a concave frustro-conical orifice at one end thereof opening from the central through passage to a diameter approximately equal to the largest tube to be accommodated to receive the end of the tube;

    at least one cylindrical, resilient ring seal surrounding the tube and disposed within a portion of the frusto-conical orifice;

    a substantially cup-shaped, flexible outer cap having a central aperture of a diameter approximately that of the largest tube to be accommodated to receive the tube, and a side wall for surrounding the inner tubular member;

    a male screw thread formed on the outer surface of the inner tubular member; and

    a cooperating female screw thread formed on the inner surface of the cup-shaped member for retaining said cup-shaped member in position on said tubular member so that said at least one ring seal will be compressed both axially with respect to said tubular member, and radially due to the surface defined by the fustro-conical orifice.

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