Hole punch

Details Hole punch Hole punch

1986-07-28

1987-06-23

Peters, Jimmy C.

Cutting

Processes

Puncturing

83685, 234107, B26F 114

Patent

active

046743723

ABSTRACT:
A pneumatically actuated hole punch which employs a ball and die punching arrangement in which the ball is free floating and the punching impact is between the ball and the plunger rather than between the ball and the die. The plunger incorporates a concave surface to correctly position the ball relative to the die upon cutting of the desired opening.

REFERENCES:
patent: 2799340 (1957-07-01), Mueller
patent: 3096015 (1963-07-01), Bradbury
patent: 3299761 (1967-01-01), Goldman
patent: 3463042 (1969-08-01), Goldman
patent: 3973453 (1976-08-01), Tameo
patent: 4123956 (1978-11-01), Harvey
patent: 4596359 (1986-06-01), Nordli

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