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:
Jan. 25, 2005
Filed:
Mar. 31, 2003
Naoto Tojo, Ikoma, JP;
Kazushige Kakutani, Hirakata, JP;
Naoto Tojo, Ikoma, JP;
Kazushige Kakutani, Hirakata, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A bogie is provided with a wheel mechanism that can move each wheel in a vertical direction, and a control unit to perform impedance control of moving force to be applied to a wheel supporting unit in which a motor provided in the wheel mechanism is supporting the wheel. When the third wheel is to climb up a step, the control unit controls output of each wheel mechanism to cause the third wheel to make contact with a wall face of the step, and facilitate the wheel to move upward so that it can climb up the step, and the other wheels can be immediately made to contact with the ground even when the climbing wheel irregularly moves in a vertical direction, so that the bogie remains in a stable posture.