Tapping subterranean pipes

Details Tapping subterranean pipes Tapping subterranean pipes

1987-01-29

1989-05-23

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

137318, 285 24, 285197, 405154, 408 1R, 408 87, F16K 4300

Patent

active

048320692

ABSTRACT:
Subterranean service pipes, eg. water mains, are tapped by minimal excavation to expose the upper half of the main and then locating (with respect to the main) a conventional pipe-tapping device but without employing means encircling the pipe. Thus, a clamp can be used, or a saddle adhesively secured to the pipe. The clamp or saddle preferably provide means for proper orientation of the drilling and tapping tool with respect to the main.

REFERENCES:
patent: 314085 (1885-03-01), Van Norman
patent: 578418 (1897-03-01), Payne
patent: 2736335 (1956-02-01), Webber
patent: 3104456 (1963-09-01), Powell, Jr.
patent: 3799182 (1974-03-01), Long
patent: 4119115 (1978-10-01), Carruthers
patent: 4627648 (1986-12-01), Montpetit
patent: 4647073 (1987-03-01), Kosaka

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