Apparatus for servicing gas lines

Details Apparatus for servicing gas lines Apparatus for servicing gas lines

1984-02-24

1985-02-05

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

137315, 137317, 137559, 285 18, 285 30, 73201, F16K 4300

Patent

active

044973322

ABSTRACT:
An apparatus and method for working on a section of gas main while it is in service comprising a work chamber formable around a section of the gas main and having means for admitting a tool thereto in a manner that it can be manipulated from outside the work chamber; means for removing the tool from the work chamber while maintaining the work chamber under gas pressure and means for safely evacuating the work chamber of gas.

REFERENCES:
patent: 3245257 (1966-04-01), Anderson
patent: 3256735 (1966-06-01), Smith
patent: 3615159 (1971-10-01), Munoz
patent: 3946754 (1976-03-01), Cook
patent: 3995655 (1976-12-01), Sands
patent: 4127141 (1978-11-01), Ledonne et al.
patent: 4327760 (1982-05-01), Lancaster

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