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:
Sep. 13, 2022
Filed:
Dec. 29, 2017
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Satoshi Nakamaru, Kanagawa, JP;
Hiroichi Ishikawa, Tokyo, JP;
Kentarou Sakai, Kanagawa, JP;
Akihiro Nakata, Kanagawa, JP;
Kazuhito Wakana, Kanagawa, JP;
Yoshio Goto, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 1/00 (2006.01); B25J 9/10 (2006.01); B25J 9/12 (2006.01); H02N 2/00 (2006.01); H02N 2/02 (2006.01);
U.S. Cl.
CPC ...
H02N 1/006 (2013.01); B25J 9/1075 (2013.01); B25J 9/12 (2013.01); H02N 2/00 (2013.01); H02N 2/02 (2013.01);
Abstract
An actuator includes a stack including: an elastomer layer; and an elastic electrode disposed on each surface of the elastomer layer, in which the stack is subjected to a pre-strain of 50% or more at least in one direction. The stack may have a round tubular shape with the elastic electrodes disposed on opposite surfaces of the elastomer layer in a radial direction of the stack.