Pipe joints or couplings – For branched path
Patent
1997-12-03
1999-11-09
Brittain, James R.
Pipe joints or couplings
For branched path
28513311, 2853323, F16L 4300, F16L 2500
Patent
active
059799455
ABSTRACT:
A common rail is provided in the pipe joint of the branch connector to improve the strength and resistance against the internal pressure fatigue; said common rail having a longitudinal conduit of a substantially circular section therein and a plurality of branch holes formed in its circumferential wall at an axial spacing, each of the branch holes having a pressure receiving seat formed on the circumferential face thereof and opened to the outside, wherein connected by means of branch connector having a conduit to communicate with the conduit of the common rail, a joint head formed at the end thereof and forming a pressure seat so that the branch pipe is engaged by bringing the pressure face thereof into abutment against the pressure receiving face, a joint portion made integral with or separate from the main pipe rail, and a nut assembled in advance in the branch pipe and fastened into the joint portion against the pressure of the joint head thereby. The branch hole is formed into an elliptical hole and offset in the radial direction of the conduit of the common rail.
REFERENCES:
patent: 4832376 (1989-05-01), Sugao
patent: 4893601 (1990-01-01), Sugao
patent: 4900180 (1990-02-01), Takikawa
patent: 5120084 (1992-06-01), Hashimoto
patent: 5143410 (1992-09-01), Takikawa
patent: 5169182 (1992-12-01), Hashimoto
patent: 5172939 (1992-12-01), Takikawa
patent: 5551733 (1996-09-01), Henwood
patent: 5667225 (1997-09-01), Kato
Hitachi Yuzo
Watanabe Eiji
Brittain James R.
Budzyn Ludomir A.
Casella Anthony J.
Grafel Gary
Hespos Gerald E.
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