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. 01, 2022
Filed:
Jan. 03, 2020
Fujikin Incorporated, Osaka, JP;
Takeru Miura, Osaka, JP;
Tsutomu Shinohara, Osaka, JP;
Tomohiro Nakata, Osaka, JP;
Toshiyuki Inada, Osaka, JP;
Kazunari Watanabe, Osaka, JP;
Kenta Kondo, Osaka, JP;
Hidenobu Sato, Osaka, JP;
Tomoko Yuhara, Osaka, JP;
FUJIKIN INCORPORATED, Osaka, JP;
Abstract
An actuator includes a casing having a first annular groove formed in an inner peripheral portion thereof; a piston having a second annular groove formed in an outer peripheral portion thereof, provided in the casing to form a pressure chamber together with the casing, and driven by a drive fluid from an outside of the actuator; and an annular seal member having a first fitting portion to be fitted into the first annular groove and a second fitting portion to be fitted into the second annular groove to seal the pressure chamber.