Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Reexamination Certificate
2006-05-10
2009-06-16
Lee, Kevin L (Department: 3753)
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
C137S318000, C138S089000, C138S094000
Reexamination Certificate
active
07546847
ABSTRACT:
A plug for closing an opening in the sidewall of a pipe, including a base member having a radial flange portion, a tubular portion and an annular elastomeric seal member slideably received on the base member tubular portion and in engagement with the flange portion. A rigid compression member is slideably received on the base member tubular portion and in contact with the elastomeric member and has a frusto-conical circumferential surface. A plurality of rigid segmented slips are received on the compression member and have teeth for biting into the cylindrical sidewall when displaced on the frusto-conical surface. An actuation member is received on the base member tubular portion providing a surface in engagement with the segmented slips. A tightening nut can be tightened to cause the segmented slips to lock the plug in position and to sealably close the pipe cylindrical sidewall.
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International Search Report and Written Opinion, issued Mar. 27, 2008 by the International Searching Authority (ISA/US); 13 pages.
Freeman Eric N.
Garrison Tony R.
Morgan Mark A.
Morrison Phillip K.
Gable & Gotwals
Lee Kevin L
TDW Delaware Inc.
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