1
Alfred D Ledonne, George A Scheuering: Method and apparatus for stopping fluid escape from pipe mains. Coupling Systems, Buell Blenko & Ziesenheim, November 28, 1978: US04127141 (40 worldwide citation)

A method and apparatus are provided for sealing the opening in the sidewall of a fluid carrying main during replacement of a service tee or the like comprising a gate valve, means on end of said gate valve for engaging the end of a service tee remote from the main, a plug wrench having an elongate s ...


2
Paul F Rieffle, Charles E Felker: Pipe and tubing connectors. Coupling Systems, Buell Blenko & Ziesenheim, October 10, 1978: US04119335 (34 worldwide citation)

A pipe coupling is provided having a sleeve with frusto-conical ends, elastomer gaskets fitting in said frusto-conical ends, a follower at each end of the sleeve having a frusto-conical opening, a plurality of generally triangular jaws fitting in said opening, a split, generally cylindrical, ring be ...


3
Richard M Halen, Robert B Walsh: Flange adapters. Coupling Systems, Buell Ziesenheim Beck & Alstadt, September 9, 1986: US04610471 (21 worldwide citation)

A flange adapter is provided for insertion between a flanged end valve and a plastic pipe having an elongate cylindrical member with a radial outward flange at one end for fastening to a metal valve flange, a second radial outward flange intermediate the ends of the cylindrical member, the other end ...


4
Richard M Halen Jr: Pipe coupling with spring off-set. Coupling Systems Incorporated, Thomas R Shaffer, December 3, 1991: US05069490 (20 worldwide citation)

A coupling for pipes is disclosed which includes a central elongate sleeve into which two pipe ends to be joined are placed, a pair of annular gasket members positioned within the opposite sleeve ends, a pair of annular backup rings positioned longitudinally outwardly of the gasket members, a pair o ...


5
James M Royston: Pipe couplings. Coupling Systems, Buell Ziesenheim Beck & Alstadt, August 19, 1986: US04606565 (18 worldwide citation)

A pipe coupling is provided having a sleeve with frusto-conical ends, elastomeric gaskets fitting in said frusto-conical ends, a follower at each end of the sleeve, tightening bolts acting on the followers to move them axially together to compress the elastomeric gaskets radially into sealing engage ...


6
Charles E Felker, Paul F Rieffle: Pipe and tubing connecting sleeve. Coupling Systems, Buell Blenko & Ziesenheim, January 24, 1978: US04070046 (15 worldwide citation)

A pipe coupling is provided having a sleeve with frusto conical ends, elastomer gaskets fitting in said frusto conical ends, a follower at each end of the sleeve having a frusto conical opening, a plurality of generally triangular jaws fitting in said opening and tightening means acting on each foll ...


7
John D Tricini: Pipe insulator and method for making same. Coupling Systems, Thomas R Shaffer, July 21, 1992: US05131688 (13 worldwide citation)

An electrically insulated pipe coupling and method is disclosed in which a first sleeve member and a second sleeve member are positioned in axial alignment and include oppositely positioned end portions axially spaced from one another to create an axial space therebetween. A resilient annular seal p ...


8
James M Royston: Insulated pipe couplings. Coupling Systems, Buell Ziesenheim Beck & Alstadt, September 3, 1985: US04538841 (12 worldwide citation)

A coupling is provided for spaced coaxial pipe ends to be connected having a sleeve or middle ring with frusto-conical enlarged ends receiving the pipe ends to be connected coaxially thereof, elastomeric gaskets having a frusto-conical portion fitting the ends of the middle ring, follower members be ...


9
Paul F Rieffle: Pipe couplings and coupling gaskets. Coupling Systems, Buell Blenko Ziesenheim & Beck, February 16, 1982: US04316053 (9 worldwide citation)

A pipe coupling and gasket is provided in which electrical conductivity through the coupling is assured, said coupling consisting of a middle ring with conical ends receiving an annular resilient gasket having a conductive helix made from metal wire of triangular cross section with an apex on the pe ...


10
Malcolm Thomas Barker: Pipe coupling. Amidex Coupling Systems, Buchanan Ingersoll PC, June 20, 2006: US07063356 (2 worldwide citation)

A pipe coupling (10) for joining together the ends of two adjacent pipes includes a housing (12) which defines a generally central bore (13) along a central axis of the housing for receiving the ends of the two adjacent pipes, and a locking arrangement (14) at each end of the housing (12) for lockin ...