Ring binder

Details Ring binder Ring binder

1996-04-03

1999-03-09

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

402 31, 402 36, 402 38, B42F 1300

Patent

active

058790977

ABSTRACT:
A ring binder adapted to be secured to a base member, the ring binder comprising at least one securing member; a substantially rigid upper structure; a pivotable lower structure supported by the upper structure; a plurality of ring members mounted to the lower structure; and at least one engagement member engageable with the securing member closely adjacent to the base member to secure the ring binder to the base member; wherein the engagement member includes an engagement surface for engaging the securing member, the engagement surface comprising an upper surface of a partially open lower end of the engagement member, and the engagement member comprising a body which is narrower than the partially open lower end.

REFERENCES:
patent: 350020 (1886-09-01), Shipman
patent: 5035526 (1991-07-01), Cooper et al.
patent: 5100253 (1992-03-01), Cooper
patent: 5160209 (1992-11-01), Schuessler
patent: 5354142 (1994-10-01), Yu
"Stimpson Eyelet Catalog", p. 86, Nov. 1968.
U.K. Search Report, 26 Apr. 1996, issued in GB 9605178.4.

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