Staple-former in a stapler
US6986449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2002 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Sep 13, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/0228
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A staple-former (11) in a stapler (1) that uses a driver blade (10) to drive staples (17), preferably into a sheaf of paper (16). The stapler contains a magazine (7) of staple blanks (8). A feed device (6) advances staple blanks onto an integral bending die (15) for bending into staple shape. Each staple has a first and a second leg (18, 19) and a crown portion (20). The staple-former (11) includes first and second leg-bending parts (24, 26) and crown-forming part (28). A staple forms when a drive device (12, 13, 14), moves the leg-bending parts (24, 26) and the crown-forming part over the bending die (15) causing a staple blank (8) to assume a staple shape. The staple-former then reciprocates to its starting positions, the staple advances to the driver blade (10), and a biasing element (32) urges the crown-forming part (28) away from the staple-former (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.