Suspendable folder
US4893745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1989 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Feb 13, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42F15/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A suspendable folder is disclosed having a front panel and a back panel with their bottom edges and a segment of each of their lateral edges secured to one another. A segment of each pair of lateral edges secured to one another is defined by two points, the first of which is near the bottom edge of each panel. The second, upper point is spaced from the first point by a distance preferably selected from the range of approximately one half to two thirds the height of the back panel. At or near the second upper point, a circular radius cut is provided to assist in distributing tearing forces across a large area of both the front panel and back panel. At least one transverse score line is also provided above the radius cut in the front panel to permit easier opening and closing of the folder without tearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.