Dual wall safety tube

Details Dual wall safety tube Dual wall safety tube

1985-06-26

1987-03-31

Marcus, Stephen

Pipes and tubular conduits

Combined

With indicating means

138111, 138148, F16L 918

Patent

active

046535411

ABSTRACT:
A dual wall safety tube assembly comprises an inner, seamless, stainless steel tube of extended length and an outer, welded stainless steel tube of the same length, in which the inner tube is connected as a process line without any junctions except for end couplings and the outer tube is similarly connected as a monitoring or inerting conduit. The assembly may include further options of electric heating cable, plastic jacketing and thermal insulation of fiberglass or similar material.

REFERENCES:
patent: 3410313 (1968-11-01), Martin
patent: 3717718 (1973-02-01), Schmidtchen
patent: 3802491 (1974-04-01), Plank, Jr. et al.
patent: 3866670 (1975-02-01), Cramer
patent: 4194536 (1980-03-01), Stine et al.
patent: 4315408 (1982-02-01), Karl

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