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:
Sep. 14, 2004
Filed:
Apr. 12, 2002
Mark S. Talesky, Huntley, IL (US);
Credo Technology Corporation, Wilmington, DE (US);
Abstract
An apparatus for preventing disengagement of an axially movable and rotatable flexible core of a flexible shaft attachment, which has a driven end and a handpiece end, and the driven end has a ferrule for attachment to a rotary power tool. The rotary power tool has an exteriorly threaded hollow output shaft with a first predetermined interior depth for receiving the base end of tool bits that can be used with the power tool, and the flexible shaft attachment has a drive cap attached to the output shaft, and the drive cap has an aperture sized and shaped for receiving the core in fixed rotating engagement. The apparatus includes a generally cylindrical stop plug having an open end portion and a closed end portion, and a cylindrical chamber extending from said open end portion to said closed end portion. The open end portion has an outward extension adapted to engage the end of the output shaft and be held in place by the attached drive cap, and the chamber is capable of receiving the core therein. The distance from the open end portion to said closed end portion is less than the first predetermined interior depth, and the stop plug thereby limiting the depth of penetration of the core in the output shaft.