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:
Aug. 01, 1978
Filed:
Jul. 22, 1976
Wilhelm Funke, Bochum, DE;
Heinrich Honke, Bochum, DE;
Heinz Simonides, deceased, LATE OF Bochum, DE;
Abstract
A drum-cutter mining machine is propelled along a course of travel at the working face of a mine by a winch carried on the machine. The winch drives two sprocket wheels each pivotally carried by a pivot arm to position the sprocket wheels so that their teeth mesh with the teeth of a stationary rack. A roller or skid runner is carried by each arm to engage the lower surface of the rack and maintain the desired meshing relation between the sprocket wheel and the rack teeth at the upper surface of the rack. In a second embodiment, single-acting piston and cylinder assemblies deliver a biasing force to opposite sides of a level coupled to each pivot arm for controlling its position in a dependent relation to the direction of travel by the mining machine along the rack.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile