Title: Cover with adhesive bridges in scored areas

Abstract: An improved book cover structure of the general type having an integral backbone and front and back covers connected to the backbone via spaced parallel score lines to enable the front and back covers to flex relative to the backbone. A backbone strip of hot melt adhesive is secured on an inside face area of the backbone. Spacer means for positioning the outermost sheets in engagement with the backbone strip are provided and comprise cover strips of hot melt adhesive secured to inside surface areas of the front and back covers adjacent to the score lines with reduced area portions of the cover strips extending across the score lines.

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Inventors: Wang, James C. (Libertyville, IL)
Murfitt, Donald (Glenview, IL)
Livingston, Paul H. (Hoffman Estates, IL)

Application Number: 06/162608
Filing Date: 1980-06-24
Publication_date: 1983-02-01
Assignee: GEN BINDING CORP

Primary Class(es): 281/21.100 281/29, 412/37
Other Classes: B42D3/00; B42C9/00; B42D3/00
US Patent Ref:

3847718	November, 1974	Watson	281/21R	ADHESIVE BINDING MEANS FOR EDGE BINDING ASSEMBLED PAGES TOGETHER IN BOOK FASHION
3957287	May, 1976	Hall	281/29	Book and cover therefor
3964770	June, 1976	Abildgaard	281/29	Case for book with pressure sensitive resilient spine pad
3973787	August, 1976	Staats	281/21R	Bookbinding system
4129471	December, 1978	Rome	281/21R	Bookbinding technique
4141100	February, 1979	Domroe	281/21R	Binding machine and cover for use therewith
4289330	September, 1981	Wiermanski	11/1AD	Bookbinding system

Other Refs:
Primary Examiner: Bell, Paul A.
Assistant Examiner: Brown, John S.
Attorney: Hill, Van Santen, Steadman, Chiara & Simpson

Claims: