Die punch

Details Die punch Die punch

1991-05-10

1992-07-28

Watts, Douglas D.

Cutting

Tool or tool with support

Cutting couple type

83140, 83686, 83698, B26D 726, B26F 114

Patent

active

051332370

ABSTRACT:
A three-piece, die punch has an upper body fixed in the die, a changeable quill, and a lower body to hold the changeable quill in the die punch.

REFERENCES:
patent: 770239 (1904-09-01), Lovejoy
patent: 2087186 (1937-07-01), Freeman, Jr.
patent: 2172272 (1939-09-01), Booth
patent: 2580366 (1951-12-01), Smith
patent: 3272051 (1966-09-01), Actis
patent: 3496818 (1970-02-01), Porter et al.
patent: 3742804 (1973-07-01), Patterson et al.
patent: 3763732 (1973-10-01), Stursberg
patent: 4372183 (1983-02-01), Lehtinen
patent: 4487566 (1984-12-01), Barna
patent: 4558616 (1985-12-01), Sakanoto

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