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:
Jul. 20, 1993
Filed:
May. 27, 1992
Randy H Hillard, Wichita, KS (US);
Stephen A Youngers, Clearwater, KS (US);
Robert G Draney, Wichita, KS (US);
Case Corporation, Racine, WI (US);
Abstract
A boom assembly including a boom with laterally spaced side walls and adapted to have a digging chain and tooth assembly rotatable thereabout. A boom end idler assembly is arranged between the side walls at the free end of the boom for rotatably supporting the digging chain and tooth assembly. The boom end idler assembly includes a boom end idler rotationally supported by an anti-friction bearing. Axially aligned members pass through aligned apertures in the side walls of the boom and at least partially within the inner race of the bearing for defining the rotational axis of the boom end idler and for clamping the side walls of the boom to each other to minimize clearances between the boom and the boom end idler. Seals are provided to close the clearances proximate the bearing and inhibit foreign debris from contaminating the anti-friction bearing.