Binder device releasably engaging aperture or notch of sheet – Depository – Face member with back member
Patent
1990-07-31
1991-02-05
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Depository
Face member with back member
402 80R, 402502, B42F 1322
Patent
active
049900170
ABSTRACT:
An expandable double ring binder for carrying and displaying swatches of material samples includes a pair of loose leaf ring metals slidably mounted on a carriage attached to the inside of the backbone of a loose leaf binder case, such that the ring metals may be spread apart laterally when the case is opened to a distance sufficient to allow the samples attached to each ring metal to be fully accessed for examination, removal or the like without interference by the other ring metal and samples attached thereto. Each ring metal is secured to a slide plate which, in turn, is slidably attached to an underlying slotted carriage plate by rivets extending loosely through the slots and attached to a slide plate follower on the underside of the carriage plate. The carriage plate is riveted or otherwise attached to the inside surface of the backbone of the binder preferably spaced slightly therefrom with an appropriate spacer plate to permit relatively unrestricted sliding movement of the slide plate followers between the carriage plate and the backbone.
REFERENCES:
patent: 1037292 (1912-09-01), Morden
patent: 4180341 (1979-12-01), Langhorst
patent: 4943177 (1990-07-01), Jordan et al.
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