Corrugated tubing

Details Corrugated tubing Corrugated tubing

1974-03-29

1976-03-09

Smith, Al Lawrence

Metal fusion bonding

Process

With shaping

29454, B23P 1904

Patent

active

039427021

ABSTRACT:
A method of producing a corrugated flexible tube wherein a corrugated profiled strip having multiple corrugations is wound in a helical path such that its edges overlap and then the overlapped edges are tight welded together, preferably by electrical resistance welding, such that every welded corrugation of the resultant corrugated flexible tube is followed by at least one unwelded corrugation.

REFERENCES:
patent: 1547431 (1925-07-01), Mallory
patent: 1964289 (1934-06-01), Harrah
patent: 1978529 (1934-10-01), Harrah
patent: 2358291 (1944-09-01), Fentress
patent: 2741024 (1956-04-01), Breuer
patent: 3063142 (1962-11-01), Kroon
patent: 3330303 (1967-07-01), Fochler
patent: 3534123 (1950-12-01), Hasselhorn

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