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:
Feb. 08, 1994
Filed:
Dec. 07, 1992
Robert M Thomas, South Lyon, MI (US);
Chrysler Corporation, Highland Park, MI (US);
Abstract
A fastening arrangement for attaching a handgrip knob assembly to a vehicle gearshift lever rod. The knob has a through cavity comprising an upper cavity portion, an intermediate cavity portion supporting a metal insert, and a lower upwardly tapered cavity portion. The insert upper surface defining a bottom wall clamping surface of the upper cavity portion bottom wall. An internally threaded insert through bore is divided from a lower counterbored portion by an internal stop shoulder. The shift lever rod has an upper threaded stem connected by a cylindrical shank portion to an upwardly tapered rod section while the stem portion terminates in a frustoconical pilot end. A rod external stop shoulder divides the stem and shank sections. A spring steel drive washer, having a central aperture intermeshed with an upper crown portion of a locknut, is initially press-fitted in the upper cavity until its outer edge frictionally engages a serrated portion of the upper cavity. Assembly begins with the installer releasing the knob assembly above the rod stem such that the knob's lead-in cavity slidably receives the rod stem in a gravity induced torque ready manner. Initial torquing of the locknut results in self-threading of the stem through the insert and into the locknut bore causing the stop shoulders to clamp in a first anti-rotational lock. Continued torquing releases the frictionally retained drive washer from the serrated portion thereby clamping the locknut undersurface against the cavity bottom wall providing a second anti-rotational lock.