Cover folders
AssigneeDennison Manufacturing Company
InventorDavid J. Leahy
Life of this patent
Estimating the term…
Abstract
Cover folders having binders that securely retain the cover and inserted sheets, without the use of external fasteners. The binder is an elongated bar with an interior channel for receiving and holding a folded cover. The bar includes within the channel slanted ribs which engage the folded edge of the cover sheet along an overlapping flap. The overlapping flap of the cover sheet may be made more rigid by heat treatment and/or by a reinforcing coating.
Claims10
A folder comprising a folded cover and binder for the folder cover, said binder comprising
- an elongated bar having a pair of oppositely facing side walls defining an interior slot along the elongated bar's length, said side walls converging at a slit, and
- at least one member protruding into the slot from the interior side of at least one of said side walls, the member protruding in a direction away from the slit and the member forming an obtuse angle at its intersection with a section of the interior side of the side wall from which said member protrudes, wherein
- the folded cover comprises a sheet folded to form a pair of sheets having a common fold line and the pair of sheets folded again to form an overlapping flap terminating along said common fold line,
- the body of each of the pair of said sheets separable from one another, wherein the folded cover is inserted into the elongated bar so that the overlapping flap engages the protruding member along said common fold line.
A folder comprising a folded cover and binder for the folded cover said binder comprising
- an elongated bar having a pair of oppositely facing side walls defining an interior slot along the elongated bar's length,
- said side walls converging at a slit, and
- at least one member protruding into the slot from the interior side of at least one of said side walls, the member protruding in a direction away from the slit, wherein
- the folded cover comprises a sheet folded to form a pair of sheets having a common fold line and the pair of sheets folded again to form an overlapping flap terminating along said common fold line, the body of each of the pair of said sheets separable from one another, wherein the folded cover is inserted into the elongated bar so that the overlapping flap engages the protruding member along said common fold line.
Dependencies are inferred from the claim text.