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:
Sep. 11, 1990
Filed:
Jun. 08, 1989
Applicant:
Inventor:
Herbert Schupphaus, Bochum, DE;
Assignee:
Gebr. Eickhoff Maschinenfabrik u. EisenieBerei mbH, Bochum, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ; E21C / ;
U.S. Cl.
CPC ...
299 42 ; 299 53 ;
Abstract
A drum cutter-loader mining machine equipped with an auxiliary debris crushing drum. The machine includes a cutter drum support arm and an auxiliary drum jib which are independently pivotable about a common pivot axis. The device further includes means for driving the auxiliary drum through a gearing communication between the auxiliary drum and the motor used for driving the cutting drum.