Method of manufacturing expansion joint

Details Method of manufacturing expansion joint Method of manufacturing expansion joint

2011-03-15

2011-03-15

Ward, Jessica L (Department: 1735)

Metal fusion bonding

Process

With shaping

C228S141100

Reexamination Certificate

active

07905387

ABSTRACT:
A method of manufacturing an expansion joint includes steps of: marking parts, which will form the expansion joint, on a piece of raw material, so that the original 360 degree shape of the expansion joint is equally divided by the parts, and cutting the marked parts from the raw material; welding the divided parts, so that opposing ends of the welded parts are separated from each other; bending the welded parts into the form of a cone using a bending roller, thereby welding and joining the opposing ends thereof; fixedly mounting the resultant structures on a press; shaping the mounted resultant structures into products using a mold having a desired shape and dimension; and butting a pair of the products against each other and welding the products in the outer radial direction.

REFERENCES:
patent: 3263054 (1966-07-01), Holmgren
patent: 11320185 (1999-11-01), None
Machine Translation of JP 11320185 A published Nov. 1999, acquired Oct. 2009.

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