High pressure fuel injection pipe

Details High pressure fuel injection pipe High pressure fuel injection pipe

1976-11-10

1979-01-16

Bell, Houston S.

Pipes and tubular conduits

Combined

With end structure

138177, 138178, 138DIG11, F16L 900

Patent

active

041344308

ABSTRACT:
A high pressure fuel injection pipe is produced by squeezing an end portion of a small-diametered steel pipe member having a flow path extending through the center thereof to form a flow path of reduced diameter in the end portion communicating with the central flow path, pressing and plastically shaping the end portion into a frusto-conical or arcuate-surfaced connecting head, and grinding minute curve concavo-convex faces created in the inner surface of the flow path of reduced diameter during the plastic shaping to thereby form a flow path equal in diameter and communicating with the flow path in the small-diametered steel pipe member.

REFERENCES:
patent: 2590688 (1952-03-01), Crain

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