The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2003
Filed:
Aug. 24, 2001
Benjamin A. Gaddis, Clemson, SC (US);
Phillip A. King, Bonner Springs, KS (US);
Power Tool Holders Incorporated, Christiana, DE (US);
Abstract
A chuck for use with a manual or powered driver having a rotatable drive shaft includes a generally cylindrical body having a nose section and a tail section. The tail section is configured to rotate with the drive shaft and the nose section has an axial bore formed therein. A plurality of jaws are movably disposed with respect to the body toward and away from the axial bore. Each jaw includes a back surface and a tool engaging surface opposite the back surface. The tool engaging surfaces are disposed facing generally parallel to the axis of the axial bore and a plurality of grinds are defined across each tool engaging surfaces to form a helical pattern on the tool engaging jaw surfaces when the tool engaging surfaces are disposed at a predetermined position with respect to the axis of the axial bore.