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:
Feb. 28, 1978
Filed:
Oct. 14, 1976
Applicant:
Inventors:
Siegfried Sigott, Zeltweg, OE;
Alfred Zitz, Zeltweg, OE;
Wilhelm Althaler, Vienna, OE;
Helmut Wlach, Zeltweg, OE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ; E21D / ;
U.S. Cl.
CPC ...
61 4 / ; 61 4 / ; 61 42 ; 61 84 ;
Abstract
Device for consecutively supporting a drift by means of caps and posts or props in dependence on face advancement, said device being designed for lifting and for pressing the caps to be positioned against the mine roof, characterized in that a breast frame is provided for being suspended to the positioned caps in a manner to be shiftable in direction of face advancement, lifting beams forming a support for the caps to be positioned being supported on said breast frame for being lifted in upward direction and a crane being guided on the breast frame for being shifted in direction of face advancement.