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:
Feb. 03, 2015
Filed:
Jul. 16, 2010
Christoph Pietrala, Dortmund, DE;
Christoph Pietrala, Dortmund, DE;
Caterpillar Global Mining Europe GmbH, Lünen, DE;
Abstract
A rack and pinion arrangement includes rack and pinion rods having a carrier bar, a guide bar and inner rack and pinion teeth for interaction with a driving sprocket. An end tooth at both ends of the each rack and pinion rod has a change in radius of curvature, and the tooth profile of the inner rack and pinion teeth has a change in radius of curvature. The change in radius of curvature of the end teeth is lower than the change in radius of the inner rack and pinion teeth. The end tooth head of the end teeth is lower than the tooth heads of the inner rack and pinion teeth. The end tooth in the region of the change in radius of curvature has a greater tooth width than the inner rack and pinion teeth in the region of the change in radius of curvature.