Book binders with tabs

Claim 2

A book binder comprising a front cover panel, a rear cover panel, and a spine; said spine comprising a cross wall hingedly connected along opposite longitudinal edges thereof to said front cover panel and said rear cover panel; a first, rectangular strip or tab having three free sides, extending at right angles to and longitudinally along the inner face of said spine; a second, rectangular strip or tab, having three free sides, extending at right angles to and longitudinally along said inner face in spaced, parallel relationship to said first strip or tab, whereby edge portions of pages of a book may be inserted between said strips or tabs and mounted in said book by stitching, stapling or the like through said strips and said edge portions, each of said panels having a shallow, elongated, rectangular cavity adjacent its spine-contiguous edge to form a pocket into which fits said strips or tabs when the book binder is closed.

Claim 3

An integrally molded book binder constructed of a thermoplastic polymer comprising: a front cover panel, a rear cover panel, and a spine having a cross wall hingedly connected by means of living hinges along opposite longitudinal edges thereof to said front cover panel and said rear cover panel; a first rectangular strip or tab having three free sides, extending at right angles to and longitudinally along the inner face of said spine; a second rectangular strip or tab having three free sides, extending at right angles to and longitudinally along said inner face in a spaced, parallel relationship to said first strip or tab; a shallow, elongated, rectangular cavity in each of said panels, adjacent the spine-contiguous edge of said panel, to form a pocket into which fits said strips or tabs when the book is closed; a shallow, rectangular, longitudinal cavity, in the inner face of said spine, between said strips or tabs to receive the rear edges of the pages to be bound in said binder, wherein said front cover panel, said rear cover panel, said spine, said first rectangular strip or tab, and said second rectangular strip or tab are formed out of a single thermoplastic polymer molding, and said living hinges are formed from said molding; whereby edge portions of pages of a book may be inserted between said strips or tabs and mounted in said book by stitching, stapling, or the like through said strips and said edge portions.

Claim 4

An integrally molded book binder constructed of a thermoplastic polymer comprising: a front cover panel, a rear cover panel, and a spine having a cross wall hingedly connected by means of living hinges along opposite longitudinal edges thereof to said front cover panel and said rear cover panel; a first rectangular strip or tab having three free sides, extending at right angles to and longitudinally along the inner face of said spine; a second rectangular strip or tab having three free sides, extending at right angles to and longitudinally along said inner face in a spaced, parallel relationship to said first strip or tab; a shallow, elongated, rectangular cavity in each of said panels, adjacent the spine-contiguous edge of said panel, to form a pocket into which fits said strips or tabs when the book is closed; a shallow, rectangular, longitudinal cavity, in the inner face of said spine, between said strips or tabs to receive the rear edges of the pages to be bound in said binder, wherein said front cover panel, said rear cover panel, said spine, said first rectangular strip or tab, and said second rectangular strip or tab are formed out of a single thermoplastic polymer molding, and said living hinges are formed from said molding; whereby edge portions of pages of a book may be inserted between said strips or tabs and mounted in said book by stitching, stapling, or the like through said strips and said edge portions.