Cover and method and device for manufacturing the same
US5580097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 8, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D3/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cover comprising a spine (3), a strip of binding agent (4) connected to the spine, and two cover sides 1, 2) which are connected with the spine by means of a first pair of creasing lines (5, 6) extending parallel to the strip, the cover sides also being provided with a second pair of of creasing lines (7, 8) extending parallel to the strip, which creasing lines are at at short distance from the first pair and along which the cover sides are folded on opening and closing of the booklet, a sheaf of papers (20) being intended to be inserted into the cover with one side edge of the same in contact with the strip, such that on melting and subsequent cooling of the strip, the sheaf of papers will be connected to the spine to form a finished booklet. The second pair of creasing lines are deformed in such a way that when the cover sides of the cover are essentially parallel, the two portions (9, 10) between the two pairs of creasing lines exert an inwardly directed pressure against the not yet melted strip. The invention also relates to a method and a device for manufacturing the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.