Fastening tools with floating magnet sleeves

US10150205B2 · kind B2 · utility

Assignee

• BLACK & DECKER INC. · US

Inventors

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

Key dates

• Filing date: Oct 18, 2016
• Grant date: Dec 11, 2018
• Expiry date: Mar 24, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T279/32
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A fastener driving tool includes a shaft with a working region disposed at a first end of the shaft and configured to drive a fastener, a shank portion disposed proximate a second end of the shaft and configured to couple the shaft to a power tool, and a reduced diameter torsion zone disposed between the shank portion and the working region, the torsion zone extending from a first shoulder closer to the working region to a second shoulder closer to the shank portion. A length (L) and a radius (c) of the torsion zone have been optimized so that approximately half of breakages occur in the working region and approximately half of breakages occur in the torsion zone.