Method and apparatus for attaching sheets together
US4715758A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Jul 18, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1057
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Method and apparatus for stitching sheets of paper together by means of a hardenable liquid applied to hollow needles which roll with the movement of the stack of sheets moving tangentially to the rotational action of the applicator needles. The needles can be readily arranged in any pattern of applying the hardenable liquid to the stack of sheets, as desired, and the liquid is applied under pressure only at the location of the sheets themselves. Finally, a cover is placed over the stack of sheets with the hardenable liquid not yet set, and thus the cover is automatically glued or adhered to the stack of sheets for a finally neat and complete product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.