Patent ID: 7343936
Filing Date: 2008-03-18
Classification: G01M,Y10T

Abstract:
1. A coupling used during testing of a water line including an upstream pipe and a downstream pipe, said coupling comprising a wall member having a longitudinal centerline, and a removable substantially planar disk within the wall member, integral therewith, and substantially at a right angle to the wall member, said planar disk having a center with said longitudinal centerline intersecting said center substantially at a right angle to the disk and said planar disk forming within the wall member on opposite sides thereof a first section sized to receive the upstream pipe and a second section sized to receive the downstream pipe, said planar disk having an upstream surface and a downstream surface, said upstream surface having therein a groove, said groove having an outer perimeter offset inward from the wall member a predetermined distance to provide, upon removal of the planar disk, a pipe stop extending outward from an inside surface of the cylindrical wall member substantially at a right angle to the wall member to enable an end of the upstream pipe to abut an upstream side of the annular pipe stop and an end of the downstream pipe to abut a downstream side of the annular pipe stop, and a piercing assembly attached to the disk and offset with respect to the center of the planar disk, said piercing assembly including