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. 17, 2015
Filed:
Dec. 01, 2010
Rudi Podjadtke, Herne, DE;
Rudi Podjadtke, Herne, DE;
Bochumer Eisenhütte Heintzmann GmbH & Co. KG, Bochum, DE;
Abstract
A tubbing lining for a tunnel or shaft is formed from tubbing rings having annular end surfaces, with successively tubbing rings are aligned with each other at annular end surfaces forming an annular joint. Each tubbing ring is composed of successive circumferentially arranged tubbing segments which are butt-joined. A deformable flexible element having an outer cross-sectional contour is arranged in at least one butt joint, with the cross-sectional contour parallel to the butt joint matching outer contours of the end faces such that the flexible element completely covers at least one abutting end face. The tubbing segments in conjunction with the flexible element form a prefabricated element formed of a steel reinforcing framework encased in concrete to which the flexible element is connected in a force-locked manner.