公开(公告)号：US10759029B2

公开(公告)日：2020-09-01

申请号：US15265981

申请日：2016-09-15

Applicant: TECHTRONIC POWER TOOLS TECHNOLOGY LIMITED

Inventor： John Schnell ,  Edward A. Pomeroy ,  Essam Namouz ,  Henry Johnson ,  Jie Liu ,  Hailing Lin ,  Jinlin Zhou ,  Xinghong Li ,  Ziqiang Cao ,  Liguo Ma

IPC: B25C1/04 ,  B25C1/00 ,  B25C1/06

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.

公开(公告)号：US10654154B2

公开(公告)日：2020-05-19

申请号：US15265978

申请日：2016-09-15

Applicant: TECHTRONIC POWER TOOLS TECHNOLOGY LIMITED

Inventor： John Schnell ,  Edward A. Pomeroy ,  Essam Namouz ,  Henry Johnson ,  Jie Liu ,  Hailing Lin ,  Jinlin Zhou ,  Xinghong Li ,  Ziqiang Cao ,  Liguo Ma

IPC: B25D17/24 ,  B25C1/00 ,  B25C1/04 ,  B25C1/06

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.