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:
Jan. 10, 1978
Filed:
Nov. 03, 1976
Willy Lanfermann, Bochum, DT;
Abstract
Described is a mining machine of the type which moves along a track or conveyor provided with a gear rack and wherein a driven gearwheel on the machine engages the rack to move the machine along the track. At least one skid is pivotally connected to the mining machine and bears upon and is guided by the rack, the pivotal connection of the skid to the machine being intermediate the ends of the skid. The gearwheel is fixedly mounted on the mining machine and extends through an opening in the skid to mesh with the gear rack whereby rotation of the gearwheel will cause the machine to traverse the track. The axis of rotation of the gearwheel lies in a vertical plane through which the pivotal axis of the skid extends whereby the skid can articulate along the rack without affecting the engagement of the gearwheel with the rack.