Staple detecting mechanism of electric stapler
US7048165B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27F7/38
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A staple sheet-detecting mechanism of an electric stapler having improved detection accuracy and miniaturization has a passage for feeding a staple sheet composed of straight forward staples arranged in parallel, and a forming plate and driver arranged above an anvil of the passage. A staple is inserted into papers located under the staple by moving the forming plate and the driver to a side of the staple. Above the anvil, where the forming plate waits, is a sensor (rocking member) of which one end contacts a tip edge of the staple sheet in a feeding direction, while the other end turns on or off an interrupter (detecting element). A rocking fulcrum of the sensor is provided biased to a side of the staple sheet in the passage. The forming plate and the driver are provided with recessed portions and, respectively, for allowing the sensor to rock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.