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:
Oct. 06, 1998
Filed:
Dec. 04, 1996
Ian Middleton, Sheffield, GB;
Power Tool Holders, Inc., Wilmington, DE (US);
Abstract
A chuck for use with a manual or powered driver having a rotatable drive shaft is provided. The chuck comprises a generally cylindrical body member. The body member has a forward section and a rearward section. The rearward section has an axial bore formed therein to mate with the drive shaft of the driver. A generally cylindrical sleeve is received over the forward section of the body. A primary retaining mechanism is in engagement with the sleeve and the body member to operatively prevent forward axial movement of the sleeve with respect to the body. A secondary retaining mechanism is attached to the sleeve so that if the primary retaining mechanism fails to prevent forward axial movement of the sleeve with respect to the body, the secondary retaining mechanism is brought to engagement with the body to prevent forward axial movement of the sleeve with respect to the body following the engagement.