Staple-driving gun capable of ensuring attachment of a seal washer to a sleeve
US7213735B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2006 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A staple-driving gun includes a hollow housing configured with first and second air chambers separated by a partition. 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. Hence, compressed air flows from the first air chamber into the second air chamber via a valve hole in the partition, and an air-excluding passage constituted by a gap between the valve end portion of the sleeve and an annular flange of a seal washer mounted on the valve end portion of the sleeve, and an air-excluding hole in the valve end portion of the sleeve so as to urge the piston rod to move toward a staple-discharging member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.