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:
Sep. 19, 1978
Filed:
May. 09, 1977
Gerd Radner, Herne, DE;
Christoph Zillessen, Recklinghausen, DE;
Ruhrkohle, A.G., , DE;
Abstract
A method for removing resilient gallery lining frames in mining and tunnelling, such frames consisting of a number of mutually overlapping lining section segments with a box-like profile, comprises releasing the overlapping section segments from one another in order to recover the respective lining frames. The profile of the section segments has a longitudinal gap and overlapping ends of the segments are braced one with another by a wedge system acting on the longitudinal gap of the inner section, the segments being inserted one within the other in a dissimilar manner. At an overlapping region the outer section segment is bent outwardly to provide an opening at the longitudinal gap therein and the inserted end of the inner section segment at the overlap is moved substantially normal to the opening made by the outward bending to release the overlapping sections from one another.