Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path – Travel in plane perpendicular to axis of rotation
Patent
1991-09-23
1994-07-26
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Sheet retainer travels arcuate path
Travel in plane perpendicular to axis of rotation
402 80R, 402502, B42F 1326, B42F 1342
Patent
active
053323270
ABSTRACT:
A ring binder having D-shaped rings wherein the rings, when opened, position a generally straight leg of the D-shape in a vertical orientation with respect to a horizontal bottom cover panel of the binder. The straight leg has a short turned end portion which allows for simple vertical loading of pages onto the rings. The arrangement provides for greater efficiency at loading multiple pages onto a ring binder in the factory, as well as replacing pages in the ring binder by the consumer. A plurality of D-shaped rings can be used in an arrangement wherein the ring carrier can be mounted on the bottom cover, rather than mounted onto a spine panel of the ring binder. By arranging the ring carrier on the bottom cover rather than the spine, the top and bottom cover members can be made of shorter width, resulting in a savings of material of manufacture.
REFERENCES:
patent: 267890 (1882-11-01), Herzberg
patent: 331259 (1885-11-01), Shannon
patent: 379049 (1888-03-01), Chappell
patent: 474776 (1892-05-01), Henson
patent: 509972 (1893-12-01), Tiffany et al.
patent: 1537502 (1925-05-01), Sellew
patent: 1915140 (1933-06-01), Watson
patent: 2265822 (1941-12-01), Spalding
patent: 2460718 (1949-02-01), Stevens
patent: 3263687 (1966-08-01), Weichert
patent: 4415290 (1983-11-01), Ohminato
patent: 4552478 (1985-11-01), Cohen
Cardinal Slatn-D Brochure and photographs.
Photographs of binder from ICLE Handbook.
Conception by Another.
Bell Paul A.
U.S. Ring Binder
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