3877733 is referenced by 77 patents and cites 4 patents.

A pipe coupling with a sealing gasket enclosed in a housing intended to be applied about the pipe ends which are to be interconnected and having a substantially C-shaped cross-section with end edges constructed as sealing lips which are intended to sealingly bear against a respective one of the pipe ends. Each sealing lip is supported at the web of the sealing gasket by means of an annular or ring-shaped bead arranged at an axial spacing from the lip root or base, and wherein spaces to both sides of the ring-shaped bead are interconnected with one another by throughpassages.

Title
Pipe coupling
Application Number
05/478,174
Publication Number
3877733
Application Date
June 10, 1974
Publication Date
April 15, 1975
Inventor
Straub Immanuel
Agent
Kleeman Werner W
IPC
F16l 17/00
F16L 17/04
F16L 17/00
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