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. 07, 2019
Filed:
Dec. 24, 2014
Microb Co., Ltd., Osaka, JP;
Yoshiaki Hata, Osaka, JP;
MICROB CO., LTD., Osaka, JP;
Abstract
When an actuator using a conventional piezoelectric element is used as a general-purpose mechanical component, such as a linear actuator and an electric cylinder, the absence or weak constraint of a guide in the moving direction causes the problem that the moving direction of a moving member is changed or the moving member is rotated due to a change in the posture of the moving member by an external force. A restraint member presses a rectangular parallelepiped-shaped output shaft, which has high stiffness, thermal conductivity, and lubricity and to which a piezoelectric element is attached at one end, against a guide member so as to limit the degree of freedom to one degree, in order to realize a linear actuator, an electric cylinder, and a force generation device that can be used for general purposes and have a high straight movement property. Also, an output member having a mass that is commensurate with the mass of the piezoelectric element is attached to the other end of the output shaft to improve a generated force, stiffness, and usability.