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:
Apr. 27, 1993
Filed:
Apr. 07, 1992
Gregory N Feld, Franklin, WI (US);
Bucyrus-Erie Company, South Milwaukee, WI (US);
Abstract
A roller circle for hoisting and excavating equipment has upper and lower spaced annular rails. A plurality of tapered rollers are disposed between the rails in rolling contact with bearing surfaces of the rails. Each of the rollers is mounted on a shaft. Inner and outer cages connect the projecting ends of the shafts and are joined together by through rods. A portion of the inner cage overlies a side face of a rail and a pad is disposed between the inner cage portion and the side of the rail. A second pad is disposed between the outer cage and the larger ends of the rollers. Thrust loads are transferred from the rollers to the outer cage and through the rods to the inner cage and then to the rail.