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US 2019/0381685 A1Published application
Pipe Drilling Tool And Method For Joining Pipes Using The Same
AssigneeTanaka Kyogyo Inc.
InventorTomomi TANAKA
Life of this patent
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Abstract
To provide a pipe drilling tool for forming, in a pipe, a hole for injecting a non-oxidizing gas such as nitrogen, when joining pipes such as refrigerant pipes by brazing, wherein the pipe drilling tool has a compact configuration allowing work thereof to be performed by the drilling tool being gripped by the hand of a user, does not readily generate burrs, and prevents cutting residue and burr residue from remaining in the pipe.
Claims18
A pipe drilling tool for drilling a hole in a wall surface of a pipe, the pipe drilling tool comprising:
- a rod-like pedestal portion capable of being inserted into the pipe;
- a projecting convex blade attached to the pedestal portion with its tip facing an upper side;
- a die including a recessed portion facing the convex blade above the convex blade and capable of being fitted with the convex blade in order to sandwich the wall surface of the pipe to be drilled between the die and the convex blade;
- and
- a pair of handle portions including a rod-like member or a plate-like member capable of moving the die up and down closer to and away from the convex blade.
2 more elements
Dependencies are inferred from the claim text.