Staple-driving gun with safety protection
US7401719B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Mar 1, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/041
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A staple-driving gun includes a gun body having a hollow housing configured with first and second air chambers separated by a partition, and a staple-discharging member mounted on the housing. A piston unit includes an operating member connected fixedly to a sleeve disposed movably in the first air chamber, and a piston rod disposed movably in the sleeve. The operating member is operable so as to move a valve end portion of the sleeve away from the partition such that compressed air flowing from the first air chamber into the second air chamber via a valve hole in the partition urges the piston rod to move toward the staple-discharging member for staple discharging. A biasing member biases the sleeve to a standby position, where the valve end portion of the sleeve seals the valve hole in the partition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.