The Pipe Line Development Company

Edward B Smith

William B Smith

Joseph B Smith

Gregory D Schroeder

John A Spisak

Elmer V Rogers Jr

A pipe repair fitting comprising a mating pair of generally semi-circular segments, each formed by an arcuate wall having arcuate ends, the segment walls carrying compressible seals for sealing two pairs of mating arcuate ends of the segments and sealing on the outer periphery of the pipe, at least one threaded hole in each arcuate wall end, a common bolt threaded into each of the threaded holes of each pair of mating arcuate ends and serving to sustain hoop forces in the fitting imposed by fluid leaking out of the pipe and contained by said seals.

Split fitting for pipe

A coupling assembly for mechanically coupling the plain end of a pipe, comprising a pair of standard forged flanges as basic components between which is disposed a wedge ring. One of the flanges is of the slip-on type and has associated with it a conical collet bore for receiving the wedge ring. When tension bolts assembled through the flanges are tightened the wedge ring is driven into the collet bore and tightly radially against the periphery of the pipe to thereby lock the coupling to the pipe.

Collet grip riser fitting

Apparatus for altering flow in an existing pipeline, including a shear and first actuator means for cutting transversely through the pipe wall and independent second actuator means for moving a surface associated with the shear into engagement with a sealing surface surrounding the pipe. The shear operates through a rotary valve element, mounted directly in a body of a housing surrounding the pipe. Channels encircling the shear sealing surfaces and rotary valve element distribute sealant between the respective mating surfaces to assure a fluidtight assembly. Fluid circulates through a chamber carried on the housing to isolate the first shear actuator means from the pipeline fluid. In a variant of the invention, a flapper plate valve replaces the rotary valve element where the pipe size is relatively large.

Growing community of inventors

Cleveland Heights, OH, United States of America

Edward B Smith