Underwater torch cutting and welding apparatus

Details Underwater torch cutting and welding apparatus Underwater torch cutting and welding apparatus

1991-05-29

1993-11-16

Shaw, Clifford C.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

219 691, B23K 900

Patent

active

052626083

ABSTRACT:
An apparatus for torch cutting and welding which is safe, easy to use, accurate, provides an exceptionally clean cut of any desired shape, and can be brought into a non-operating state by the operator underwater. The apparatus includes a body having at least a first chamber and a second chamber, a hydraulic motor fitted in the first chamber and communicating with an external source of a pressurized liquid medium. At one end of a movable shaft of the motor, an elongated electrode is connected, at least a portion of which is adapted to extend out of the body through an opening in the body. Via the shaft, the motor transmits a rotating or reciprocating motion to the electrode. An electric current is conducted from an external power supply source to the electrode via an electrically conductive member which is fitted in the second chamber around at least a portion of the electrode.

REFERENCES:
patent: 2490302 (1949-12-01), Holfelder
patent: 4172974 (1979-10-01), Stingelin et al.
patent: 4259562 (1981-03-01), Cammann et al.
patent: 4780944 (1988-11-01), Niinivaara et al.
patent: 4842154 (1989-06-01), Niinivaara

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