US 2026/0124696 A1Published application

Internal Rotary Plasma Pipe Cutting Device

AssigneeJoseph Dustin Butler

InventorJoseph Dustin Butler

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Abstract

A rotary plasma cutter, suitable for the cutting of pipe, pipe piles, and other hollow cylinders, has a frame with a pipe receiving area which is placed at or affixed onto the open end of a pipe or pile and a gear-tracked arm to extend a plasma cutting torch below the pile receiving area and inside of the pipe or pile, while also integrating components to both rotate the entire assembly laterally and extend the plasma torch arm distally to the interior wall of the pipe or pile to efficiently cut a pipe or pile from the inside out without the use of rotary blades or exterior access or footprint. The dimensions and design of the various components are such that the rotary plasma cutter perpendicularly severs the entire circumference of the pipe or pile without excavation or repositioning, so the pipe or pile is trimmed precisely.

Claims8

Dependent claims

An internal rotary plasma pipe cutter, herein at times referred to as “plasma cutter”, comprising:

a. a frame comprising connection points to an excavator or crane, with chain linkages to the carriage below;
b. a self-leveling carriage comprising a rigid retraction cage with a slew ring apparatus for lateral rotation, tie points back to said frame, and pile centralizing tabs;
c. a gear-toothed mast descending from said self-leveling carriage, travelling up and down on geared rollers at an adjustable rate of speed affixed to said self-leveling carriage inside the slew ring;
d. a distally extensible pneumatic cylinder at the bottom of said gear-toothed mast to allow distal extension from the center of the pipe to the inner wall of the pipe at an adjustable rate of speed;
e. a plasma torch affixed to said distally extensible pneumatic cylinder, allowing the plasma torch to be deployed at a regulated rate of speed to the pipe wall;
and
f. a series of hoses and piping such that the power supply is securely delivered to the cutting end of the implement without entanglement or pinching during transport, Y-axis vertical extension, X-axis lateral rotation, or Z-axis distal extension.

4 more elements

Dependencies are inferred from the claim text.