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. 11, 2012
Filed:
Jan. 26, 2007
Yasunori Kondo, Kakogawa, JP;
Hiroyoshi Iwata, Kako-gun, JP;
Yasuyuki Sakai, Kako-gun, JP;
Makoto Oda, Kako-gun, JP;
Tooru Niihara, Tokyo, JP;
Isao Makiuchi, Tokyo, JP;
Kunihiro Nagamori, Tokyo, JP;
Katsumi Inomata, Tokyo, JP;
Hidekazu Anai, Tokyo, JP;
Yasunori Kondo, Kakogawa, JP;
Hiroyoshi Iwata, Kako-gun, JP;
Yasuyuki Sakai, Kako-gun, JP;
Makoto Oda, Kako-gun, JP;
Tooru Niihara, Tokyo, JP;
Isao Makiuchi, Tokyo, JP;
Kunihiro Nagamori, Tokyo, JP;
Katsumi Inomata, Tokyo, JP;
Hidekazu Anai, Tokyo, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
A shield machine including an excavator capable of excavating tunnels of various cross-sectional shapes, the excavator including: a rotary drum supported at a front end side portion of a shield machine main body to be rotatable around a first center axis; a cutter supporting frame supported by the rotary drum to be rotatable around a second center axis; a rotary cutter head supported by the cutter supporting frame to be rotatable around a third center axis and including a plurality of cutter bits on a surface thereof; a rotary auxiliary cutter head supported by the rotary drum to be rotatable around a fourth center axis; and first, third, and fourth rotating mechanisms, and a swinging drive mechanism configured to respectively cause the rotary drum, the rotary cutter head, the rotary auxiliary cutter head, and the cutter supporting frame to independently rotate.