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. 26, 2006
Filed:
Mar. 27, 2003
Tomoyoshi Tokumaru, Hirakata, JP;
Kazushige Kakutani, Hirakata, JP;
Atsushi Oda, Osaka, JP;
Seiji Murakami, Osaka, JP;
Naoto Tojo, Ikoma, JP;
Tomoyoshi Tokumaru, Hirakata, JP;
Kazushige Kakutani, Hirakata, JP;
Atsushi Oda, Osaka, JP;
Seiji Murakami, Osaka, JP;
Naoto Tojo, Ikoma, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
The invention provides a mobile carriage which is adapted to shift the center of gravity efficiently by utilizing the weight of wheel rotating means, power source means and control means to thereby increase the weight of a weight portion and reduce the increase in the weight of the entire carriage, the carriage comprising a base frame, a front wheel and a rear wheel which are disposed under the base frame, wheel rotating means coupled to the front wheel and the rear wheel for rotatingly driving the wheels, power source means for the wheel rotating means, center-of-gravity shifting means having a weight portion disposed above the base frame and a mechanism for moving the weight portion relative to the base frame to shift the position of the center of gravity of the base frame by moving the weight portion by the moving mechanism, and control means for controlling the wheel rotating means and the moving mechanism, the carriage being characterized in that at least one of the wheel rotating means, the power source means and the control means is utilized as the weight portion of the center-of-gravity shifting means.