Prong type stacked paper fastener

Details Prong type stacked paper fastener Prong type stacked paper fastener

1991-07-05

1992-03-17

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer with releasable keeper

Keeper cooperating with retainer of varying cross-section

402 15, 402 17, 402 68, B42F 1308

Patent

active

050963236

ABSTRACT:
A prong-type stacked paper fastener comprises a staple component having perforated prongs and a compressor component having tang means designed in the operative position of the fastener assembly to enter selected ones of the prong perforations in order to maintain the compressor mounted snugly to the paper stack. Slide locks mounted on the compressor releasably lock the prongs in a folded-over, operative position. Detents on the slide locks engage selected perforations of the staple prongs, preventing inadvertent slippage of the slide locks.

REFERENCES:
patent: 1936144 (1933-11-01), Wagner
patent: 1978569 (1934-10-01), Dayton
patent: 2167920 (1939-08-01), Wagner
patent: 4070736 (1978-01-01), Land
patent: 4121892 (1978-10-01), Nes
patent: 4305675 (1981-12-01), Jacinto
patent: 4453851 (1984-06-01), Purcocks
patent: 4620812 (1986-11-01), Kim

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