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:
Dec. 08, 1987
Filed:
Jul. 12, 1985
Applicant:
Inventors:
Franz Barnthaler, Weisskirchen, AT;
Ferdinand Bedenk, Zeltweg, AT;
Otto Schetina, Zeltweg, AT;
Alfred Zitz, Zeltweg, AT;
Assignee:
Voest-Alpine Aktiengesellschaft, Linz, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ; E21P / ;
U.S. Cl.
CPC ...
299 33 ; 299 12 ; 299 75 ;
Abstract
An apparatus for cutting excavations having a substantially planar face comprises a cutting tool which is rotatably mounted on a jib. The jib is mounted on a mobile machine for a pivotal movement in a plane which is transverse to the heading direction and is divided into two jib sections which are pivotally movable relative to each other about an axis which is substantially parallel to the pivotal axis of the jib. The cutting tool is rotatably mounted close to or at the free end of that jib section which is most remote from the pivotal axis of the jib.