Pipe closure apparatus
OwnerWilliam E. Weschinventor
Life of this patent
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Abstract
This disclosure is directed to a temporary enclosure for a pipe. It includes a recessed opening in a body having an internal O-ring seal mechanism for engaging the end of a pipe. It is held to the pipe by incorporating a surrounding lip about the exterior of the pipe. The lip supports at spaced locations around the periphery three or four sets of pipe gripping devices. Each set incorporates a link which is pivoted to an arcuate body having serrated teeth on the innerface which contacts the pipe. As pressure is increased in the pipe, the device is forced off of the pipe. When this occurs, the connective link rotates, causing the peripheral gripper with teeth to bite into the pipe and thereby grip and hold the pipe.
Claims10
A test closure apparatus for affixing to the open end of a pipe or fitting for hydrostatic pressure testing thereof comprising:
- an end closure plate having a shoulder adapted to abut against the end of a pipe to be tested;
- and
- external pipe gripping means joined to said end closure plate which pipe gripping means include serrated gripper means for grabbing the exterior of the pipe and which pipe gripping means incorporates a rotatable mounting means which tends to jam said gripper means against the pipe more firmly as said end closure means is forced from said pipe.
Dependencies are inferred from the claim text.