Paper punch

Details Paper punch Paper punch

1999-07-26

2000-07-18

Peterson, Kenneth E.

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

83633, 83686, 83588, 30358, B26F 102

Patent

active

060891378

ABSTRACT:
A paper punch has an inner punch and an outer punch movably received with respect to each other. The outer punch has a first contour punch so as to be able to punch a hole in a piece of paper with the same contour as that of the first contour punch, and the inner punch has a second contour punch so as to punch a small hole in a piece of paper with the same contour as that of the second contour punch. Because the second contour punch moves first and the first and the second contour punches are placed concentrically, a piece of paper is then able to be punched twice by the first and the second contour punches to have an attractive shape.

REFERENCES:
patent: 2275525 (1942-03-01), Halmrast
patent: 3673901 (1972-07-01), Vinson
patent: 3785233 (1974-01-01), Robinson
patent: 4036088 (1977-07-01), Ruskin
patent: 4713995 (1987-12-01), Davi
patent: 4753010 (1988-06-01), Franovich
patent: 5495671 (1996-03-01), Shun-Yi
patent: 5601006 (1997-02-01), Quinn et al.
patent: 5697278 (1997-12-01), Shun-Yi
patent: 5749278 (1998-05-01), Lee et al.
patent: 6000139 (1999-12-01), Chan

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