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:
Mar. 19, 1985
Filed:
Jun. 02, 1980
Applicant:
Inventors:
Csaba Asszonyi, Budapest, HU;
Istvan Klausz, Sarisap, HU;
Istvan Kmety, Dprog, HU;
Nandor Meitzen, Budapest, HU;
Rezso Pasztor, Budapest, HU;
Assignee:
Magyar Szenbanyaszati Troszt, Tatabanya, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
405288 ; 405146 ; 405150 ;
Abstract
This invention relates to a method for bracing an underground cavity, wherein the cavity is lined with a tensionable layer, an expansible arch is then inserted against said layer, the arch is then tensioned and clamped in position to exert pressure in accordance with a specified formula.