Patent ID: 7201404
Filing Date: 2007-04-10
Classification: F16L

Abstract:
1. A union nut for connecting an end of a threaded pipe having exterior threading to an end of a flanged pipe having an exterior flange; said union nut including: a generally cylindrical body having a longitudinal axis; including: a lock member including: said lock member adapted to be removably engaged with said body such that, when engaged, said lock member and said partial collar cooperate to fully retain the received flange; and said first and second cooperative detent means adapted to cooperate when lock member is engaged with said collar so as to prevent casual disengagement of said flange retaining end and said lock member; and said first and second cooperative alignment means adapted to cooperate to align said lock member with said flange retaining end such that said lock member engages with said flange retaining end by sliding in a direction perpendicular to said longitudinal axis and resists disengagement by forces not perpendicular to said axis.