Assembly of ring binders and resulting product

Details Assembly of ring binders and resulting product Assembly of ring binders and resulting product

1986-10-24

1988-02-02

Kazenske, E. R.

Binder device releasably engaging aperture or notch of sheet

Depository

Face member with back member

281 29, 281 36, 411510, B42F 1300, B42D 300, B42D 312, F16B 1900

Patent

active

047226285

ABSTRACT:
An elongated hollow rectangular spine or backplate formed of plastic material for supporting and securing ring hardware in a loose-leaf binder has spaced, parallel, front and back walls joined at the edges and a centrally disposed strengthening rib extending between the front and back walls longitudinally for the length of the back plate. The ring hardware is secured to the backplate by inserting circumferentially grooved metal rivets through apertures in the ring hardware, pressing into the backplate rib and sonically welding the rivet therein. The circumferential grooves on the rivet shank facilitate anchoring the rivets to the backplate rib.

REFERENCES:
patent: 1035769 (1912-08-01), Bigelow
patent: 2321558 (1943-06-01), Trussell
patent: 3139784 (1964-07-01), Moorman
patent: 3272059 (1966-09-01), Lyday et al.
patent: 4295747 (1981-10-01), Errichiello
patent: 4582442 (1986-04-01), Rager

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