Ring binder
OwnerPeter Brajituliinventor
Life of this patent
Estimating the term…
Abstract
A loose leaf ring binder has a support for holding up the inner edges of the loose leaf sheets on that side of the rings on which it would be difficult to write. The support is a flat relatively rigid sheet that is swingably connected at its inner or outer edge to one of the binder covers, so that the inclination of the support can be adjusted. Means are provided for maintaining the selected inclination of the support, in the form of a series of teeth on the adjacent outer cover with means on the support selectively engaging with the teeth to adjust the position of the support so as to bring the inner edge of the supported loose leaf substantially level with the rings. The cover can be quite narrow, in the form of a flexible strap secured at one end to the spine of the binder and coacting with the support at its other end.
Claims4
A ring binder comprising a pair of covers, a plurality of rings carried by the binder for retaining punched pages thereon between the covers, an outer spine disposed between and swingably connected to both of said covers, an inner spine overlying said outer spine when said binder is opened flat, said inner spine being pivotably connected to said binder at one edge, a support on at least one a substantially rigid sheet swingably connected at one of its edges to the other edge of said inner spine and free at its opposite edge, said rings being mounted on said inner spine, and means to adjust the elevation of the inner edge of said support relative to the rings whereby when the covers of the binder are open, the inner edges of pages resting on the first-mentioned inner edge will be at about the same level as the upper portions of the rings, said adjusting means comprising a series of teeth on the inner side of one said cover, said series extending in a direction perpendicular to said edges, and a detent on said free edge of said sheet and selectively edngageable between any adjacent pair of said teeth.
Dependencies are inferred from the claim text.