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:
Oct. 06, 1992
Filed:
May. 10, 1991
Hartmut Grathoff, Wendelstein, DE;
Peter Kurz, Nurnberg, DE;
MAN Gutehoffnungshutte AG, Oberhausen, DE;
Abstract
A continuous-operation extraction apparatus for strip mining that is self propelled on continuous track treads. A cylindrically-shaped cutting extractor has cutting tools arranged on its peripheral surface. Recesses are provided in this peripheral surface for the transfer of extracted material through a chute to a first conveyor that is located axially within the cylinder of the cutting extractor. A second conveyor having loading carts connects with the first conveyor and receives the loosened material from the first conveyor. The first conveyor has an inside section which emerges from a front side of the cylinder and merges outside into a sloping conveyance section which extends vertically to substantially an upper edge of a chassis. An overhead ascending section is connected to the inside section and terminates in a transfer region where the extracted material is transferred to the second conveyor.