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:
Apr. 21, 2015
Filed:
Jun. 24, 2013
Tunnel boring machine with cutterhead support assembly supporting a variable number of drive systems
The Robbins Company, Solon, OH (US);
Carl E. Lenaburg, Tacoma, WA (US);
The Robbins Company, Solon, OH (US);
Abstract
A tunnel boring machine () includes a cutterhead assembly () rotatably mounted to a forward shield assembly () through a cutterhead support assembly (). The cutterhead support assembly is configured to receive a variable number of drive assemblies (), such that the number of drive assemblies may be selected after fabricating the cutterhead support structure (). The cutterhead support structure includes a housing portion () that houses the main bearing assembly () and a drive gear (). A plurality of drive mount stations () provide access to the drive gear, and are provided with a pinion housing () for stations that receive a drive assembly, or with a cradle cover () for stations that do not receive a drive assembly.