Tool bits with floating magnet sleeves

US10556329B2 · kind B2 · utility

Assignee

• BLACK & DECKER INC. · US

Inventors

• Michael P. Peters · Timonium, US
• Denny Jiang · 安丰镇, CN
• Michael Huang · San Gabriel, US
• Darren B. Moss · Cockeysville, US
• Aland Santamarina · Columbia, US
• David B. Lee · South San Francisco, US
• Mark E. Brunson · Bel Air, US
• Ruth E. Mitchener Keffer · Baltimore, US

Key dates

• Filing date: Nov 16, 2017
• Grant date: Feb 11, 2020
• Expiry date: May 30, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T279/17881
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A tool bit assembly includes a tool bit having a shaft with a first working region disposed at a first end of the shaft and a first reduced diameter portion proximate the working region and disposed between a first shoulder and a second shoulder. A floating sleeve has a rear portion with a pair of opposed window openings, a front portion supporting a magnet, and a pair of balls, with each ball disposed in one of the window openings. The floating sleeve is receivable over the tool bit with the magnet proximate the first working regions and the balls received in the first reduced diameter portion to allow the floating sleeve to move between a first position in which the balls abut the first shoulder and a second position in which the balls abut the second shoulder.