Static discharge mitigation of power tools

US12023748B2 · kind B2 · utility

Assignee

• Milwaukee Electric Tool Corporation · US

Inventors

• Timothy R. Obermann · Waukesha, US
• Patrick D. Gallagher · New Berlin, US
• Jessie L. Bernitt · Milwaukee, US
• Mitchell Carlson · New Lisbon, US
• Timothy J. Bartlett · Waukesha, US
• Alex Huber · Brookfield, US
• Travis J. Dubnicka · Menomonee Falls, US
• Daniel R. Ertl · Brookfield, US
• Troy C. Thorson · Cedarburg, US
• Kevin Staszak · New Berlin, US
• Austin JIN · Wauwatosa, US

Key dates

• Filing date: Apr 28, 2020
• Grant date: Jul 2, 2024
• Expiry date: Jul 23, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05F3/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A cut-off saw configured to remove material from a workpiece, the cut-off saw includes a motor, a blade, a drive assembly, a handle, and a coating. The blade is capable of removing material from the workpiece upon contact between the blade and the workpiece. The drive assembly is coupled to the motor and the blade and is configured to transmit torque from the motor to the blade. The handle is configured to be grasped by a user, and includes a surface and a first material having a first surface resistivity. The coating covers at least a portion of the handle. The coating is configured to distribute static electricity away from the surface. The coating is made of a second material having a second surface resistivity less than the first surface resistivity.