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:
Jun. 22, 1993
Filed:
Jun. 25, 1991
Dennis Mraz, Saskatoon, CA;
Mraz Project Consulting Services, Inc., Saskatchewan, CA;
Abstract
A mining machine having a frame undercarriage having forward and rearward ends provided with a traction assembly for driving the frame undercarriage towards a seam face to be mined. A cutting assembly is provided which includes a plurality of rotatable outer elements each having a substantially horizontal rotation axis disposed perpendicularly to the seam face and an assembly for swinging the cutting assembly up and down with respect to the seam face about a horizontal swing axis parallel to the seam face. The swinging assembly is pivotally mounted on the forward end of the carriage to input pivotal movement of the cutting assembly about a vertical pivot axis.