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. 07, 1986
Filed:
Jul. 30, 1984
Applicant:
Inventor:
Herbert Schupphaus, Bochum, DE;
Assignee:
Gebr. Eickhoff Maschinenfabrik und Eisengiesserei mbH, Hunscheidtstrasse, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 75 ; 299 76 ; 299 78 ;
Abstract
A tunnel or road header is provided with a caterpillar running gear and a portal frame. A cutter head means engageable with a tunnel face is mounted displaceably on the frame on a horizontal track extending transversely of the longitudinal direction of the roadway. The cutter head means consists of a shearing machine equipped with a carrier arm which is pivotal parallel to the rock face through more than 360.degree. and a shearing drum which is carried by the carrier arm and which rotates about an axis extending toward the rock face and parallel to the roadway floor.