Pipe joints or couplings – End to side or plate – Saddle-type clamp
Patent
1991-06-26
1992-09-01
Arola, Dave W.
Pipe joints or couplings
End to side or plate
Saddle-type clamp
2853344, F16L 4112
Patent
active
051434105
ABSTRACT:
Branch connectors connected with a high-pressure branched fuel tube forming a fuel supply passage to a Diesel engine. Each connector has a circulation passage through which high-pressure fuel circulates. The passage extends axially within the main pipe. Holes extend through the wall defining the passage. Pressure-receiving seat surfaces are formed, each around an opening in the outer surface of the main pipe. The diameter of the opening increases outwardly. Each connector has a fluid passage in communication with the circulation passage, as well as a push head portion bearing on the corresponding seat surface. Coupling metal fittings surround the main pipe. The connectors are screwed to their respective fittings, for fastening the connectors to the main pipe. The bearing portion of each push head portion is a substantially spherical surface whose center is located on the axis of the connector. The bearing portion of the seat surface is a curved surface that is symmetrical with respect to the axis of the corresponding hole. The curved surface is in contact with the spherical surface on a line. The distance l of the inner surface of the main pipe from the intersection of said line and the plane which runs across the axis of the corresponding hole and parallel to the axis of the main pipe is so set that the relations 1/5 T<l<3/4 T hold, where T is the thickness of the wall of the main pipe.
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Arola Dave W.
Casella Anthony J.
Hespos Gerald E.
Usui Kokusai Sangyo Kaisha Ltd.
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