Lifter mechanism for a powered fastener driver

US11577372B2 · kind B2 · utility

Assignee

• Milwaukee Electric Tool Corporation · US

Inventors

• David A. Bierdeman · New Berlin, US
• Troy C. Thorson · Cedarburg, US
• Jacob P. Schneider · Madison, US
• Mackenzie J. Nick · Theresa, US
• Nathan Bandy · Wauwatosa, US
• Travis W. Leathrum · Milwaukee, US
• Mitchell T. Neuhoff · Waukesha, US
• Mark Christopher Hughes · Clent, GB
• David C. Graf · Greendale, US
• Marcus Wechselberger · Milwaukee, US
• Leonard F. Mikat-Stevens · Milwaukee, US
• Jacob N. Zimmerman · Pewaukee, US
• Jason M. Julius · Waukesha, US
• Rosalie C. Phillips · Milwaukee, US
• Beth E. Cholst · Wauwatosa, US

Key dates

• Filing date: Apr 13, 2022
• Grant date: Feb 14, 2023
• Expiry date: Apr 13, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25C1/041
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A powered fastener driver includes a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece, a drive unit for providing torque to move the driver blade toward the top-dead-center position, and a rotary lifter engageable with the driver blade. The rotary lifter having a body and a drive pin coupled to the body. A roller is rotatably coupled to the drive pin and includes a non-cylindrical outer peripheral surface defining a plurality of engagement sections. A tooth of the driver blade is configured to engage one of the engagement sections when moving the driver blade from the bottom-dead-center position toward the top-dead-center position.