Hole punch structure

Details Hole punch structure Hole punch structure

2007-08-22

2010-10-26

Lee, Laura M. (Department: 3724)

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

C083S167000, C083S638000, C083S588000

Reexamination Certificate

active

07819045

ABSTRACT:
The invention provides a hole punch structure. More particularly, one end of an exposed longitudinal handle is moved together with a slide rod in a hole-punching mechanism covered by a casing. Thus, when the other end of the handle is pressed down, the slide rod is also moved transversely, a push rod connected to the slide rod is also moved, and a tool shelf is pressed vertically downward to achieve a hole-punching operation of a punching post. This hole punch structure works according to the principle of lever of the longitudinal handle.

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patent: 2007/0266836 (2007-11-01), Marks
patent: 2008/0314219 (2008-12-01), Liu
patent: 2009/0151532 (2009-06-01), Liu
patent: 2009/0223341 (2009-09-01), Huang
patent: 0353389 (1990-07-01), None

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