Portable, reusable pipe coupling

A portable, reusable coupling for connecting cylindrical conduit, said coupling comprising:

• (a) an elongated tubular coupling body defining a generally cylindrical internal passage of sufficient dimension to receive end portions conduit therein, said coupling body being formed to define internal shoulder means at each extremity thereof, said coupling body also having internal body threads at each extremity thereof;
• (b) annular metal seal support ring means being provided within each extremity of said coupling body and having abutting relation with said internal shoulder means;
• (c) seal retainer means being provided at each extremity of said coupling, each of said seal retainer means defining annular externally threaded connection rim means adapted to be received in connected adjustable relation by said internal body threads, said seal retainer means cooperating with said annular seal support ring means to define a variable volume internal seal chamber having said seal support ring means as a circular wall thereof and to define an annular variable volume internal seal locking groove, said seal retainer means further defining a curved concave circular seal support surface extending to the inner periphery of said seal retainer means and forming a seal supporting wall of said seal chamber;
• and
• (d) annular resilient seal means being disposed within said internal seal chamber and defining a deformable annular sealing portion having a generally cylindrical inner sealing periphery for sealing engagement with end portions of conduit, said resilient seal means being of sufficient internal dimension to receive end portions of conduit therein, upon linear movement of said seal retainer means to reduce the volume of said seal chamber said sealing portion of said seal means being mechanically deformed thus forcing the inner peripheral sealing portion thereof into sealing engagement with end portions of conduit, said seal means defining a convex curved circular surface having mating engagement with said curved concave circular support surface of said seal retainer means, said seal means further defining a radailly outwardly extending circular locking flange being received within said seal locking groove, upon said linear movement of said seal retainer means said locking flange of said seal means being mechanically locked within said seal locking groove.