Powered fastener driver and operating method thereof

US10759029B2 · kind B2 · utility

Assignee

• Techtronic Power Tools Technology Limited · VG

Inventors

• John Schnell · Jackson, US
• Edward A. Pomeroy · Piedmont, US
• Essam Namouz · Greenville, US
• Henry Thomas Johnson · Seneca, US
• Jie Liu · Bellevue, US
• Hailing Lin · Dongguan, CN
• Jinlin Zhou · Dongguan, CN
• Xinghong Li · Dongguan, CN
• Ziqiang Cao · Beijing, CN
• Liguo Ma · Dongguan, CN

Key dates

• Filing date: Sep 15, 2016
• Grant date: Sep 1, 2020
• Expiry date: Nov 27, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25C1/06
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A powered fastener driver includes a cylinder and a drive piston within the cylinder being acted on by a driving force resulting from a pressure differential. The powered fastener further includes a drive blade coupled to the drive piston and operable to drive a fastener, and an adjustable valve for selectively introducing air from ambient atmosphere into the cylinder, thereby changing the pressure differential acting on the drive piston. By adopting a self-contained vacuum generating means as described above, the present invention does not rely on any external vacuum source and powered fastener driver can be used and carried with conveniently.