Patents Examined by David J. Bartczak
  • Patent number: 5016925
    Abstract: A pipe coupling is described comprising a pair of flanged collars, each collar having a sleeve that fits within one end of a pipe and an integral radial flange that extends radially outward of the pipe section circumference. An annular ring gasket is formed or disposed around each sleeve and the gasket is lodged between the inside surface of the pipe and the sleeve. The end of each pipe section which receives the sleeve is then crimped to form indentations in the exterior surface of the pipe, said indentations compressing the gaskets and forming a watertight seal between the sleeves and the end of each pipe section.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: May 21, 1991
    Inventor: Paul K. Davis