Dual purpose puncher

Cutting – Tool or tool with support – Cutting couple type

Reexamination Certificate

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Details

C083S167000

Reexamination Certificate

active

07111540

ABSTRACT:
A dual-purpose puncher combining two-hole and three-hole punch assemblies, is shown and described. The dual purpose puncher provides a duality of uses to the consumer without the necessity for readjustment.In the preferred embodiment, the two-hole punch assembly is positioned opposingly to the three-hole stationary punch assembly in such a way that a central arm of the press lever frame of the three-hole punch assembly passes between two arms of the press lever frame of the two-hole punch assembly.In another embodiment, the modified press lever frame of the three-hole punch assembly slidably engages the modified press lever frame of the two-hole punch assembly thereby driving both, the punch set of the two-hole punch assembly and the punch set of the three-hole punch assembly.Either embodiment combines both punch assemblies and a platform into a single unit while reducing the platform's footprint.

REFERENCES:
patent: 1335932 (1920-04-01), Bayles
patent: 2534094 (1950-12-01), Yerkes
patent: 3073199 (1963-01-01), Yerkes
patent: 3808933 (1974-05-01), Buan
patent: 4466322 (1984-08-01), Mori
patent: 4724734 (1988-02-01), Hse
patent: 5012712 (1991-05-01), Nordquist
patent: 5342276 (1994-08-01), Fujiwara et al.
patent: 5829334 (1998-11-01), Evans et al.
patent: 5974929 (1999-11-01), Kugel et al.
patent: 6076447 (2000-06-01), Damask

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