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. 28, 2021
Filed:
Apr. 29, 2020
Bridgestone Corporation, Tokyo, JP;
Atsushi Nakayama, Tokyo, JP;
Yasunori Tarutani, Tokyo, JP;
Shingo Ohno, Tokyo, JP;
Yasuo Fukushima, Tokyo, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
Provided is a pneumatic actuator having improved durability. A pneumatic actuator () comprises an actuator body () including: a cylindrical tube () configured to expand and contract by air pressure; and a cylindrical sleeve () formed by weaving cords () oriented in predetermined directions, wherein in a no-load and no-pressure state, an average angle (Θ) of the cords () with respect to an axial direction (D) of the actuator is 20 degrees or more and less than 45 degrees, and in a state in which an average angle (Θ) of the cords () with respect to the axial direction (D) of the actuator is 45 degrees with an air pressure of 5 MPa, a ratio (S2/S1) of a total area (S2) of gaps () of the cords () to an area (S1) of an outer surface of the actuator body () is 35% or less.