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. 18, 1983
Filed:
Mar. 04, 1981
Applicant:
Inventor:
Heinrich Honke, Bochum, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ; E21C / ;
U.S. Cl.
CPC ...
299 45 ; 299 81 ;
Abstract
A cutter drum assembly for a longwall mining machine of the type having a cowl pivotal about the axis of the drum and nozzles on the periphery of its spiral conveying flights for directing a trickle of liquid onto the face area being mined. The cowl, which is normally on the side of the drum opposite the face being mined, carries a cam which controls valves supplying liquid to the nozzles such that at any time water is delivered only from those nozzles adjacent the working face area.
Honke, Heinrich. (1983). Cutter drum assembly for a longwall mining machine (U.S. Patent No. 4368925). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4368925
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile