"Hole-in-one" metal punch drive unit

Details "Hole-in-one" metal punch drive unit "Hole-in-one" metal punch drive unit

1983-03-14

1985-08-20

Kazenske, E. R.

Cutlery

Perforating or indenting implements

30360, 30362, 279 9R, B26F 100

Patent

active

045355401

ABSTRACT:
A combination pilot drill and drive assembly for forming holes in sheet metal panels with one or more draw punches is disclosed. The assembly includes separable drill and drive units which can be cooperably engaged with one another when used to drive a pilot drill, and disengaged when the drive unit alone is used to drive a draw punch. The assembly is ordinarily used with a conventional drill motor, which is used to drive the assembly as a pilot drill and also to drive one or more conventional draw punches with the drive unit alone.

REFERENCES:
patent: 2293786 (1942-08-01), Worden
patent: 2633197 (1953-03-01), Nischan
patent: 2896955 (1959-07-01), Treppared
patent: 2920913 (1960-01-01), Antila
patent: 3765790 (1973-10-01), Kubicek
patent: 4019827 (1977-04-01), Christianson et al.
patent: 4340328 (1982-07-01), Droulx et al.
patent: 4403417 (1983-09-01), Wilson et al.
patent: 4405269 (1983-09-01), Hertzlen

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