Patent ID: 6572154
Filing Date: 2003-06-03
Classification: F16L

Abstract:
A tubing assembly for joining flared transmission tubing adapted to conduct pressurized fluid flow comprising:a body defining a pair of coaxial contiguous bores with a first bore of said pair being of smaller diameter than the second bore of said pair and together forming a radial shoulder therebetween; a tubular piston located within the second of said bores and forming a narrow clearance between the outside diameter surface of the piston and the internal diameter surface of the second bore thereat; said piston including a sealing surface adapted to cooperate with a flared end of received tubing for effecting a sealing engagement therewith; an annular seal positioned in said clearance to seal said clearance against fluid flow about said piston; spring means located and compressed between said shoulder and said piston urging said sealing surface outward into a sealing engagement against the flared end of received tubing, and retention means operative to resist outward displacement of said piston in opposition to the urging force of said spring means, wherein there is included an annular groove defined in the internal surface of said second bore and said retention means comprises a retaining ring secured in said annular groove and adapted to encircle a received tubing end behind a shoulder thereof.