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:
Sep. 04, 1990
Filed:
Nov. 09, 1988
Applicant:
Inventor:
Erich Brandl, Grosslobming, AT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 76 ; 299 89 ;
Abstract
In a rotationally driven cutting roll for a machine for cutting ore or other rock material from a drift face, the roll is axially divided into a plurality of roll portions arranged end to end in juxtaposition along the drift face. The roll portions are rotationally driven by a continuous, one-piece straight driving shaft. Lateral ones of the roll portions are supported coaxially with the shaft, but the medial roll portion or portions is or are supported in respective inclined positions relative to the longitudinal axis of the driving shaft. As a result, gearing ribs on the drift face are minimized in width.