US Patent No. 9,791,077

PIPE COUPLING HAVING DOUBLE-THREADED TIGHTENING FASTENER AND ASSOCIATED METHODS


Patent No. 9,791,077
Issue Date October 17, 2017
Title Pipe Coupling Having Double-threaded Tightening Fastener And Associated Methods
Inventorship Edwin A. Bird, Ashdown, AR (US)
Assignee Sensus Spectrum LLC, Raleigh, NC (US)

Claim of US Patent No. 9,791,077

1. A pipe coupling for coupling two pipe ends together, comprising:
a sleeve having a generally cylindrical body portion with open opposing ends configured to receive the two pipe ends;
a sealing gasket operatively coupled with the sleeve for engaging at least one of the two pipe ends; and
a clamping element operatively coupled with the sleeve for compressing the sealing gasket into tightened engagement with at
least one of the two pipe ends, the clamping element further including:

first and second bolt flanges nominally spaced from one another to define a gap therebetween,
a double threaded fastening bolt extending generally tangential to the generally cylindrical body portion of the sleeve and
through the first and second bolt flanges, the fastening bolt including first and second external threaded portions connected
at a central bolt portion and respectively defining a right-hand thread and a left-hand thread, and

first and second fastening nuts in threaded engagement with the first and second external threaded portions of the fastening
bolt and positioned to abut the respective first and second bolt flanges, the first fastening nut including a threaded bore
with a right-hand thread and the second fastening nut including a threaded bore with a left-hand thread,

wherein each of the first and second bolt flanges includes a socket defining an arcuate surface, and each of the first and
second fastening nuts includes an arcuate surface configured to be positioned in face-to-face abutting contact with the arcuate
surface of the corresponding first or second bolt flange when inserted into the corresponding socket, to thereby prevent rotation
of the first and second fastening nuts relative to the first and second bolt flanges when the first and second fastening nuts
are in abutting engagement with the first and second bolt flanges.