Pipe joints or couplings – Particular interface – Tapered
Patent
1991-05-20
1992-12-08
Reese, Randolph A.
Pipe joints or couplings
Particular interface
Tapered
285158, 2853341, 2853323, 285917, 285353, 285156, 277171, 277179, F16L 1900
Patent
active
051691825
ABSTRACT:
A branch connection for a high pressure fuel rail including a passage through which high pressure fuel flows, and a plurality of through holes formed in the circumferential wall of the passage and including respective pressure receiving surfaces tapering radially outwardly from the passage. The branch connection comprises a branch element including a passage communicated with the passage of the fuel rail. The branch element includes a press head, at one end, engaged with the pressure receiving surface through a bowl-shaped seal so as to threadably secure the branch element to the fuel rail. The seal has a central hole, at least inner and outer peripheral edges of which are engaged with an end surface of the press head and the pressure receiving surface of the through hole in the fuel rail, respectively. The angle between the peripheral surface of the central hole in the seal and the pressure receiving surface is less than 90.degree.. The angle between the peripheral surface of the central hole and the end surface is also less than 90.degree.. The seal is made of metal and at least having a surface made of soft metal such as silver, indium, copper, brass, or aluminum.
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Aberle Timothy
Casella Anthony J.
Hespos Gerald E.
Reese Randolph A.
Usui Kokusai Sangyo Kaisha Ltd.
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