Ring binder

Details Ring binder Ring binder

1996-06-06

1998-09-22

Fridie, Jr., Willmon

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

402 31, 402 36, B42F 1300

Patent

active

058104992

ABSTRACT:
A ring binder to be fixed to an article includes a support for mounting a plurality of ring members thereon, and a control member movable to act on a sloping part of the upper surface of the support to cause the support to pivot and thereby close the ring members and movable along a sloped portion of the under surface of the support to cause the support to pivot and thereby open the ring members. The control member includes a cross bar member which acts on the sloped portion of the under surface of the support. In another embodiment, the support has a plurality of substantially longitudinal rib members on its upper surface.

REFERENCES:
patent: 813753 (1906-02-01), Trusell
patent: 842851 (1907-02-01), Boden
patent: 904777 (1908-11-01), Hawkins
patent: 919497 (1909-04-01), Trussell
patent: 1150719 (1915-08-01), Trussell
patent: 1215371 (1917-02-01), Hawkins
patent: 2439675 (1948-04-01), Segal
patent: 2612169 (1952-09-01), Segal
patent: 4566817 (1986-01-01), Barrett
patent: 4919557 (1990-04-01), Podosek
patent: 5158386 (1992-10-01), Mann, Jr.
patent: 5378073 (1995-01-01), Law

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