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:
Mar. 25, 2014
Filed:
Apr. 21, 2008
Mitsuru Shimamoto, Tsu, JP;
Takahiro Maekawa, Tsu, JP;
Mitsuru Shimamoto, Tsu, JP;
Takahiro Maekawa, Tsu, JP;
Nabtesco Corporation, Tokyo, JP;
Abstract
In a robot arm is provided with a closed link mechanism between a base and a hand, and a temperature of a first link member from among a plurality of link members constituting the closed link mechanism is to reach a first temperature T, and a temperature of a second link member is to reach a second temperature T, the first link member and the second link member formed from differing materials. An elongation ratio of the first link member, in which a length of the first link member at the first temperature Tis divided by length of the first link member at a pre-operation temperature Tis approximately equal to an elongation ratio of the second link member, in which a length of the second link member at the second temperature Tis divided by a length of the second link member at the pre-operation temperature T