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:
May. 09, 1989
Filed:
Oct. 05, 1987
Applicant:
Inventors:
Shinji Naito, Hitachi, JP;
Kenji Tsuchita, Hitachiota, JP;
Yoshiaki Ichikawa, Hitachiota, JP;
Chikara Sato, Hitachi, JP;
Shigeru Kajiyama, Hitachi, JP;
Assignee:
Babcock-Hitachi Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180119 ; 180-952 ; 180901 ; 305 36 ;
Abstract
A wall-crawling machine comprises a body, a plurality of guide wheels rotatably mounted on the body, at least one crawler track extending around the guide wheels, a plurality of permanent magnets disposed on an outer surface of each of the crawler tracks, and a guide device provided on the respective crawler tracks for selectively restraining or releasing the crawler track from moving relative to the body in a direction perpendicular to a plane on which the permanent magnets travel.