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:
Jun. 13, 1978
Filed:
Dec. 03, 1976
Applicant:
Inventors:
Werner Karsten, Gelsenkirchen, DT;
Helmut Erwien, Lunen, DT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ; E21D / ;
U.S. Cl.
CPC ...
61 63 ; 61 4 / ; 299 31 ;
Abstract
Apparatus for anchoring a mining installation to the floor of a mining excavation includes an anchor beam and at least one anchoring element which is anchored in a borehole in the floor of the mining excavation. Each anchoring element is provided with a respective tensioning device for prestressing that anchoring element. Each tensioning device comprises a freely pivotable support member on which is arrayed an adjustable anchoring element connection element.