Apparatus for drilling into a pipe under pressure

Details Apparatus for drilling into a pipe under pressure Apparatus for drilling into a pipe under pressure

1985-04-23

1987-03-10

Schran, Donald R.

Fluid handling

With repair, tapping, assembly, or disassembly means

Tapping a pipe, keg, or apertured tank under pressure

408 67, 408 87, 408100, F16L 5518

Patent

active

046484221

ABSTRACT:
An apparatus for drilling into a pipe under pressure to form a branch has a casing which can be connected to an isolating valve of a tee-fitting and through which a drill bit passes within the tee-fitting and the valve. The drill bit is surrounded by a barrel sealed with respect to the casing so that the casing rearwardly of the drill bit forms a chamber receiving drilling debris.

REFERENCES:
patent: 2171575 (1939-09-01), Cline et al.
patent: 2287354 (1942-05-01), Misch
patent: 2719461 (1955-10-01), Hawker
patent: 2972915 (1961-02-01), Milantovits et al.
patent: 3272033 (1966-09-01), Leopold, Jr. et al.
patent: 3804545 (1974-04-01), Christov et al.
patent: 3821965 (1974-07-01), Reynolds
patent: 4090805 (1978-05-01), Grimsley

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