Ring binder having paper punch mechanism

Details Ring binder having paper punch mechanism Ring binder having paper punch mechanism

1994-06-29

1995-07-04

Han, Frances

Binder device releasably engaging aperture or notch of sheet

Sheet retainer with separate aperture making device

B42F 1340

Patent

active

054294452

ABSTRACT:
A ring binder/paper punch combination having a ting member housing, mounted on a spline of a binder cover, in which spring plates biasing the ring member are housed, a paper sheets insertion frame being disposed between the ring member housing and the spline of the binder cover has upper and lower punching holes aligned with the positions of the ring members and a gap opened toward the front side of the insertion frame, a cover mounted on the ring member housing has openings on the top at both ends. Punching rods are extended from a punching rod block housed in the cover and are inserted into punching rod guide tubes mounted to align with the punching holes in the insertion frame. Depression levers for depressing the punching rod block have inner ends being pivoted by pins in the cover, the depression levers have downward protruding points located between the inner ends and the outer ends thereof for contacting an upper position of the punching rod block and have knobs attached to the outer ends, the knobs being exposed in the openings of the cover.

REFERENCES:
patent: 2139159 (1938-12-01), Hammern
patent: 4749297 (1988-06-01), Roy
patent: 5273370 (1993-12-01), Bland et al.

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