Mechanical punch driver

Details Mechanical punch driver Mechanical punch driver

1981-06-11

1983-04-26

Peters, Jimmy C.

Cutlery

Perforating or indenting implements

With portion positioned in work aperture

B26F 132

Patent

active

043808719

ABSTRACT:
A mechanical knock-out punch driver has a torque housing that has a recirculating ball screw unit rotatably supported therein. A driver collar is connected to a rotatable handle to direct a rotary input force to a nut portion of the ball screw unit so as to drive the screw portion of the ball unit and a draw stud connected thereto axially and linearly without rotation. A draw punch is pulled by the non-rotating draw stud to cut a slug of material from a sheet material panel to produce a clearance hole for the passage of electrical conduit, tubing, piping or the like.

REFERENCES:
patent: 1929245 (1933-10-01), Harvey
patent: 2113087 (1938-04-01), Jensen
patent: 2221904 (1940-11-01), Abramson
patent: 2633197 (1953-03-01), Nischan
patent: 3028987 (1962-04-01), Van Hecke
patent: 3269011 (1966-08-01), Herrstrum
patent: 3564716 (1971-02-01), Burrows

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