Lighted power tool

US9028088B2 · kind B2 · utility

Assignee

• BLACK & DECKER INC. · US

Inventors

• John C. Vanko · Timonium, US
• Tal Gottesman · Towson, US
• Daniel Puzio · Baltimore, US
• Michael K. Forster · White Hall, US
• John D. Cox · Timonium, US
• Joseph P. Kelleher · Parkville, US
• Stuart E. Garber · Towson, US
• Joerg Zellerhoff · Towson, US
• Joao Norona · Baltimore, US
• Robert S. Gehret · Hampstead, US
• Scott J. Eshleman · Parkville, US
• Stephen P. Osborne · Pikesville, US
• Brian E. Friedman · Baltimore, US
• Robert A. Usselman · Forest Hill, US
• Anatoliy Nosov · Parkville, US
• Michael C. Doyle · Baldwin, US

Key dates

• Filing date: Jul 19, 2012
• Grant date: May 12, 2015
• Expiry date: Jul 30, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02J7/0044
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A power tool includes a tool body having an output member that drives an accessory. An end effector is coupled for rotation with the output member. A light source is disposed on the end effector. A primary coil assembly is configured on the tool body and mounted concentric to the output member. The primary coil assembly includes a primary coil that is electrically connected to a power source of the power tool. A secondary coil assembly is configured on the end effector and mounted concentric to the output member. The secondary coil assembly includes a secondary coil that is electrically connected to the light source. Current flowing through the primary coil creates a magnetic field that causes current to flow through the secondary winding and power the light source.