Paper binding device
US5895164A · kind A · utility
Inventor
Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42F13/26
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A paper binding device includes a base, two binding ring assemblies, a pull plate, and a bottom plate. By causing the pull plate to displace forwardly and rearwardly in the center of the base, positioning pins on the pull plate may displace in corresponding guide slots of the binding ring assemblies to force the binding ring assemblies to open or close. The pull plate further has stop pieces that may firmly secure the binding ring elements in position when the binding ring assemblies are in a closed state. The pull plate effectively eliminates the problem of small open angle with conventional paper binding devices which make it difficult to bind papers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.