Patent ID: 9303804
Filing Date: 2016-04-05
CPC Classification: F16L

Claim Text:
1. A fitting joinable with tubing by welding or mechanical joining, the fitting comprising: a socket that accepts an end of a section of tubing; an interior surface of the socket configured for joining to the section of tubing by welding; an exterior surface of the socket including a raised feature thereon; and a collar having a first portion that includes a sidewall configured to accept the exterior surface of the socket therein, the sidewall including a channel that receives the raised feature, the interaction of the raised feature and the channel during rotation of the collar with respect to the exterior surface draws the collar toward the socket and applies a compressive force on a sidewall of the tubing to mechanically couple the tubing in the socket, the collar also including a second portion that includes a plurality of longitudinally extending flanges, the flanges being configured to frictionally engage the sidewall of the tubing to resist withdrawal of the tubing from the socket, and wherein the second portion couples to a compression ring having a tapered interior surface, the tapered interior surface depressing the plurality of flanges toward the sidewall of the tubing.