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:
Jan. 17, 1989
Filed:
Oct. 15, 1986
Paul R Pollock, Fort Wayne, IN (US);
Larry P Stoneburner, Fort Wayne, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
A steerable axle assembly having an axle with a generally vertically extending bore therein, a kingpin that is non-rotatably positioned in the bore in the axle in such a manner that the kingpin is longitudinally engaged by the bore so that the kingpin can not drift upwardly in the bore, the kingpin having upper and lower cylindrical portions that receive first and second tapered roller bearings, respectively, the first and second tapered roller bearings being retained, respectively, in apertures in upper and lower yoke arms of a steering knuckle. The first and second tapered roller bearings are adjustably preloaded by an externally threaded bearing adjuster that is threaded into an internally threaded portion of the aperture in the upper yoke arm of the steering knuckle. The aperture in the upper yoke arm is covered by bolting an end of the steering arm to the upper yoke arm over the aperture and the aperture in the lower yoke arm is covered by bolting an end of the tie rod to the lower yoke arm over the aperture. The kingpin is prevented from migrating upwardly within the bore in the axle either by providing the kingpin with a tapered portion that engages a tapered bore, or by providing the kingpin with a shoulder between a lower, larger diameter portion and a higher, smaller diameter portion that engages a shoulder in the bore between an upper bore portion and a lower counterbore portion.