Method of forming cable-guiding opening in metal wall-studs and

Details Method of forming cable-guiding opening in metal wall-studs and Method of forming cable-guiding opening in metal wall-studs and

1992-12-08

1994-02-22

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72409, 81367, B21D 2834

Patent

active

052877167

ABSTRACT:
A method and hand powered tool for forming openings in metal wall-studs thereby to receive electrical cables, which can be easily pulled through these openings. The tool comprises pyramidally shaped piercer attached to a jaw which is pivotally connected to a handle having affixed hollow die. The piercer, pushed into stud's wall by lever, forms in the stud an opening having guiding tabs shaped from material displaced from the area of said opening.

REFERENCES:
patent: 925865 (1909-06-01), Brown
patent: 1044283 (1912-11-01), Stanger
patent: 1465793 (1923-08-01), Schilling
patent: 1837451 (1931-12-01), Lee
patent: 3925875 (1975-12-01), Doke
patent: 4571975 (1986-02-01), Pawloski

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