Abstract: The present invention relates to leak preventing gaskets contemplated for use with segmented pipe couplings, which generally include a pair of coupling segments adapted to receive a gasket which surrounds a pair of pipes to join the pipes together or to join a nipple or fitting to the pipe by tightening a pair of bolts and related fasteners with a corresponding pair of bolt pads on the segments. The couplings contemplated for use with the gasket of the present invention includes types which are adapted to attach grooved and flared end pipes, or non-grooved pipes in sealed relation to withstand fluid at temperatures up to and including 230° F. and higher, and at pressures of up to 1,000 psi. Although such pipes generally conduct water up to about 230° F., they may also be used for toxic and volatile chemicals.

Abstract: A method of making a coupling for joining pipe segments is disclosed. The method includes providing a fitting with a socket for receiving a pipe end. A first region of the fitting adjacent to the socket is expanded to a larger diameter than the socket. A second region of the fitting adjacent to the first region is expanded to a larger diameter than the first region. A third region of the fitting adjacent to the second region is expanded to a larger diameter than the second region. A sealing member is positioned in the first region, a retainer is positioned in the second region and a support washer is positioned in the third region. A lip is turned inwardly on the third expanded region to capture the components within the coupling.

Abstract: A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket and a second expanded region adjacent to the first expanded region. A sealing member is positioned in the first expanded region, a retainer is positioned in the second expanded region and a support washer having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer. A lip turned inwardly on the second expanded region overlaps the radial flange and captures the support washer, retainer and sealing member within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling.