Bookbinding strips and method of binding books
US4674906A · kind A · utility
18Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Nov 18, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42B5/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A first plastic strip has longitudinally spaced studs each of which can be bent over at a 90.degree. angle. A second strip has holes through which the studs fit and grooves which receive and secure the bent over studs. Paper punched to receive the studs is clamped between the two strips. The studs are then bent over into grooves in the second strip and held in bent position. The grooves have overhanging lips which detachably retain the studs in place. The paper in thus securely bound. To prevent cracking the studs, the abruptness of the 90.degree. bend may be relieved by forming an annular depression around the base of each stud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.