Patent ID: 9470346
Filing Date: 2016-10-18
CPC Classification: F16L,G01N

Claim Text:
1. A pipe connection joint for connecting a pipe with an analysis column of a liquid chromatography device comprising: a ferrule having an inner hole into which a pipe is inserted and an end portion having a wedge shape; a compression screw having a first inner hole with a first diameter into which the pipe is inserted and a second inner hole with a second diameter being different from the first diameter, and one end of the compression screw has a recessed portion; an elastic body disposed in the second inner hole supporting the pipe in such a way that the pipe is movable; a first elastic body support that is fixed to the pipe and disposed in the second inner hole; a second elastic body support fixed to the compression screw and having an inner hole into which the pipe is inserted, and having an end portion supporting the elastic body disposed in the compression screw; a pipe clamp holder that supports an end portion of a pipe clamp, and has an inner hole into which the pipe is inserted, the pipe clamp holder being mechanically engaged with the compression screw, and wherein the pipe clamp is disposed in the pipe clamp holder and is fixed to the pipe, wherein the elastic body and the second elastic body support are positioned between the first elastic body support and the pipe clamp in an axial direction of the pipe, wherein the wedge-shaped end portion of the ferrule extends from the compression screw, wherein the second elastic body support is disposed in the inner hole of the pipe clamp holder, and wherein the other end portion of the ferrule is disposed within the recessed portion of the compression screw.