Universal binding for making variable sized books and reports
US4371194A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1980 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Jun 24, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D3/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A book cover structure of the type having front and back covers for binding sheets therebetween. A backbone area is joined with the front and back covers. The backbone area is provided with spaced parallel strips of hot melt adhesive with transversely extending bridge means of hot melt adhesive extending therebetween the width of the backbone area. Spaced score lines are positioned between the parallel strips under the bridges in parallel relation relative to the strips to enable the user to flex the binding along selectable score lines relative to the backbone area. The bridge means of hot melt adhesive and the strips comprise means for holding sheets in bound engagement with the backbone area. The bridge means of hot melt adhesive extend across the score lines and thus provide continuity of adhesive on opposite sides of and across the score lines. At least one of the covers may have a second set of spaced parallel score lines adjacent an outer edge remote from the backbone area and disposed in parallel relation relative to the strips. At least one of the score lines in the second set may be folded leaving the outer edge in lapped relation relative to the associated cover, the sco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.