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. 10, 1991
Filed:
Dec. 13, 1989
Applicant:
Inventors:
Kaj B Emanuelsson, Saltsjo-Boo, SE;
Carl S Hartwig, Taby, SE;
Assignee:
Atlas Copco MCT AB, Nacka, SE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21D / ; E21C / ;
U.S. Cl.
CPC ...
299 31 ; 405138 ;
Abstract
Tunnel boring machine comprising a transmission housing (11) which during boring is fixed relative to the tunnel. The boring head (15) is axially displaceable relative to an outgoing shaft (14) of the transmission housing while transferring torque from the outgoing shaft to the boring head. A number of fluid cylinders (16) are arranged between the transmission housing and a bearing housing (19,30) for the boring head in order to press the boring head against a tunnel front.
Emanuelsson, Kaj. (1991). Tunnel boring machine (U.S. Patent No. 5046783). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5046783
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile