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US 4,911,475 AGranted
Book binding construction
OwnerHarry H. Lermaninventor
Life of this patent
Estimating the term…
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OwnerHarry H. Lermaninventor
Estimating the term…
A book having a binding wherein the pages thereof are bound together by two or more transverse segments of adhesive spaced apart by one or more segments devoid of adhesive or other means for restraining movement. The cover of the book is formed by a unitary sheet of flexible material having a spine section intermediate and intergral with the front and back cover sections. The front section of the cover is secured to the first page of the book block while the back section of the cover is secured to the last page of the book block thereby leaving the spine section of the cover unattached from the book block and spaced apart therefrom. Upon opening the book to a page, the spine of the book block bends in a concave manner and the segments along the spinal edge of the opened page which are devoid of adhesive, bow or wedge outward over the opposite page preventing the pages from turning and maintaining the book in a flat position.
A book having a block of pages secured to a cover having a flexible spine, said block of pages formed as as integral unit by at least two transversely flexible segments of adhesive with an unbound segment therebetween, said adhesive segments extending across one side of said block thereby binding said pages together only at said side, means securing said block to said cover with said flexible spine aligned with and facing said one side, whereby the unbound segment of a first page to which the book is open bows outwardly over the facing page in an engaging and wedging manner.
Dependencies are inferred from the claim text.