Pipes and tubular conduits – With closures and plugs – Test plugs
Reexamination Certificate
2008-03-18
2008-03-18
Brinson, Patrick F. (Department: 3754)
Pipes and tubular conduits
With closures and plugs
Test plugs
C138S089000, C137S068190, C137S068300, C073S049800, C073S049100
Reexamination Certificate
active
11503534
ABSTRACT:
A coupling used during testing of a water line including an upstream pipe and a downstream pipe connected by the coupling. A removable barrier disk prevents water from flowing through the connected pipes until after testing, when the disk is then detached from the body member of the coupling. A piercing assembly interacts with a groove near the perimeter of the disk to initiate a tear that propagates along the groove as the disk is pulled away from the body member of the coupling. The piercing assembly is attached to the disk by a fulcrum element offset with respect to a center of the planar disk.
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Amparan Albert A.
Cataldo Mark J.
Collins Fred
Brinson Patrick F.
Connors John J.
Connors & Assoc. Inc.
MCP Industries, Inc.
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