Meyer Sound Laboratories, Incorporated

John D McMahon

Gregory T Janky

Treasure L Hinds

Timothy Boot

Loudspeaker grille

A broken pipe, such as a PVC water pipe, is repaired by cutting out a section and replacing that section with a special repair assembly. The replacement section is of at least the same diameter and specification, such as ASTM Schedule 40 PVC, as the existing line of pipe. The ends of the repair pipe section and ends of the existing pipe are provided with increased diameters, and special one-way couplings are provided to slide over the two joints, one at each end of the repair section, to solvent weld the joints together. In a modified procedure a single joint is made with the special coupling.

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Emeryville, CA, United States of America

John D McMahon