Actuator

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United States of America Patent

PATENT NO 11821114
SERIAL NO

17284629

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An object of the present disclosure is to provide an actuator having even better durability than the conventional actuator. Specifically, an actuator has an actuator main body constituted of a cylindrical tube capable of expanding/contracting by hydraulic pressure and a sleeve for covering an outer peripheral surface of the tube, the sleeve having a cylindrical structure formed by cords woven to be disposed in predetermined directions, wherein: the inner diameter r0 (mm) of the tube, the thickness t (mm) of the tube, the storage elastic modulus E′ (MPa) of the tube at 25° C., and the mesh aperture ratio A of the cords constituting the sleeve in a pressurized state satisfy the following formula (1):

description='In-line Formulae' end='lead'50≤E′×(t/r0)/A≤600  (1).description='In-line Formulae' end='tail'

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First Claim

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Patent Owner(s)

Patent OwnerAddress
BRIDGESTONE CORPORATION1-1 KYOBASHI 3-CHOME CHUO-KU TOKYO 1048340 ?1048340

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanesugi, Hiroyuki Tokyo, JP 8 79

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