Piercing clamp

Details Piercing clamp Piercing clamp

1990-12-06

1992-06-30

Brittain, James R.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer with means to force sheet thereon

24 67P, 24 675, 24 677, B42F 1300

Patent

active

051257580

ABSTRACT:
A piercing clamp for sheets of paper and the like, it includes a piercing jaw containing a piercing pin, and a holding jaw, and is urged closed by a spring. It is self piercing. Once a sheet of paper is pierced within the clamp, it retains its position relative to the clamp whether the clamp is open or closed. A guard may also be included to guard the piercing pin. The piercing clamp has great utility in a hanging clipboard. By piercing divider sheets within the clamp, other sheets may be inserted between the dividers without being pierced, allowing the piercing clamp to be used as a flier.

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patent: 4525899 (1985-07-01), Carroll
patent: 4628572 (1986-12-01), Chang

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