公开(公告)号：US20210299837A1

公开(公告)日：2021-09-30

申请号：US17214002

申请日：2021-03-26

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Casey D. Garces ,  Mitchell T. Neuhoff ,  Jacob N. Zimmerman ,  Christopher J. VanAckeren ,  Grace Whitmore ,  Marcus Wechselberger ,  Jason M. Julius

IPC: B25C1/04

Abstract: A fastener driver includes a housing, a cylinder supported by the housing, and a movable piston positioned within the cylinder. A driver blade is attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade includes a body portion extending along a longitudinal axis, and a tip portion configured to contact a fastener. The tip portion is bisected by a central axis that is parallel with the longitudinal axis such that the tip portion is laterally offset relative to the body portion.

公开(公告)号：US20210299835A1

公开(公告)日：2021-09-30

申请号：US17210979

申请日：2021-03-24

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Bryan C. Ward ,  Jacob N. Zimmerman ,  Andrew J. Weber ,  Marcus Wechselberger

IPC: B25C1/04

Abstract: A fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a bottom-dead-center (BDC) position. A lifter is operable to move the driver blade from the BDC position toward the TDC position. A transmission is provided for providing torque to the lifter. The lifter includes a hub and a plurality of lugs extending therefrom. Each lug is engageable with the driver blade when moving the driver blade from the BDC position toward the TDC position. The hub and the lugs are integrally formed as a single piece. The lifter includes a first side and an opposite second side. Each of the first side and the second side is flat.

公开(公告)号：US20200164498A1

公开(公告)日：2020-05-28

申请号：US16696818

申请日：2019-11-26

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Marcus Wechselberger ,  Troy C. Thorson ,  David A. Bierdeman

IPC: B25C1/04

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position toward a driven or bottom-dead-center (BDC) position, a gas spring mechanism for driving the driver blade toward the BDC position, a lifter assembly having a rotary lifter for returning the driver blade from the BDC position toward the TDC position, and an arm upon which the rotary lifter is supported. The fastener driver also includes a motor which, in a first position of the rotary lifter, provides torque to the rotary lifter to return the driver blade from the BDC position toward the TDC position. The fastener driver further includes a brake mechanism which, when activated, redirects torque from the motor away from the rotary lifter and toward the arm, causing the lifter assembly to move from the first position toward a second position in which the rotary lifter is not engageable with the driver blade.