Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path – Travel in plane perpendicular to axis of rotation
Patent
1982-06-28
1985-06-11
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 38, 402 40, 402 41, B42F 1300, B42F 1322, B42F 304, B42F 1336
Patent
active
045225265
ABSTRACT:
Ring mechanism for loose leaf binders, and method of manufacture therefor, which has actuating or booster levers which serve both to open and close the rings. Mating ring segments or portions are affixed at corresponding spaced locations to a pair of metallic rods or rails. The outer ends of the rods of oval cross section include crank arm portions, with flattened tangs at the terminal ends thereof formed during fabrication on a rail of continuous length which is then severed to provide identical rail and ring segment components. The rail and ring components are then assembled in parallel relation within the inturned edge channels of a spring metal cover plate or case of arcuate cross section which is tensioned to hold the ring segments in closed relation. Each of the booster levers is slotted to engage opposite surfaces of the tangs for pivoting the rods about their longitudinal axes in response to pivotal movement of the booster levers whereby the rings are selectively opened and closed by said levers.
REFERENCES:
patent: Re18806 (1933-04-01), Dawson
patent: 1529454 (1925-03-01), Trussell
patent: 1900334 (1933-03-01), Dawson
patent: 2013552 (1935-09-01), Dawson
patent: 2439675 (1948-04-01), Segal
patent: 2817341 (1957-12-01), Schade
patent: 3404685 (1968-10-01), Vernon
patent: 3884586 (1975-05-01), Michaelis
Lozfau Arthur
Lucey William H.
Bell Paul A.
Dennison National Company
Heyrana Sr. Paul M.
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