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. 10, 1995
Filed:
Dec. 17, 1993
Lawrence C Hilgers, Wauwatosa, WI (US);
Thomas P Weber, Glendale, WI (US);
Thomas G Teller, Faribault, MN (US);
Philip M Poeschl, Roseville, MN (US);
Harnischfeger Corporation, Brookfield, WI (US);
Abstract
A tumbler drive mechanism having a rotatable tumbler body mounted on a shaft and a plurality of tumbler lugs removably mounted on the tumbler body. The shaft has a longitudinal axis about which it and the tumbler rotate. The tumbler body includes a center drum and a plurality of circumferentially spaced apart radially projecting drive flanges. Each one of the plurality of tumbler lugs is mounted between and in engagement with two adjacent ones of the plurality of drive flanges. Each of the tumbler lugs engages the shoe lugs of a crawler track as the tumbler body rotates to drive the crawler track. The tumbler lug is mounted on the tumbler body at a selectively variable radial distance from the axis of the tumbler body. The radial distance at which the tumbler lugs are mounted on the tumbler body is accomplished by providing one or more shims positioned between the lug and the tumbler body.