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:
Dec. 13, 2016
Filed:
Oct. 07, 2013
Applicant:
Herrenknecht Aktiengesellschaft, Schwanau, DE;
Inventors:
Werner Burger, Schwanau, DE;
Michael Strässer, Darmstadt, DE;
Assignee:
HERRENKNECHT AKTIENGESELLSCHAFT, Schwanau, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21D 9/12 (2006.01); E21D 9/13 (2006.01);
U.S. Cl.
CPC ...
E21D 9/124 (2013.01); E21D 9/12 (2013.01); E21D 9/13 (2013.01);
Abstract
A method and device for transporting overburden away during tunneling includes a seal that separates a first portion and a second portion of a transporting screw arrangement. As a result, in open tunneling or in earth-pressure-assisted tunneling, when the seal is closed, overburden can be transported out of a first opening, arranged ahead of the seal in the direction of removal and, in fluid-assisted tunneling, when the first opening is closed and the seal is open, the overburden can be transported into the second portion.