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. 06, 1994
Filed:
Jun. 04, 1993
Toshio Akesaka, Kanagawa, JP;
Kabushiki Kaisha Iseki Kaihatsu Koki, Tokyo, JP;
Abstract
A shielding apparatus comprises a cylindrical shield body, a crankshaft supported by the shield body rotatably around the axis of the shield body, a plurality of rotors successively provided in the direction of the axis in a front region ahead of the shield body and a driving mechanism for rotating the crankshaft around the axis, wherein the rotors define the outer surface of an approximately conical or truncated conical shape in conjunction with each other, and the adjoining rotors are made eccentric with respect to the axis of the shield body in the different directions from each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile