Title:
アクチュエータ
Document Type and Number:
Japanese Patent JP6963517
Kind Code:
B2
Abstract:
An actuator includes a cylinder made of an aluminum alloy, a bottom part that closes one end of the cylinder, a cylindrical inner rod that is inserted in the cylinder to form an annular gap to the cylinder, a cylindrical piston rod that is closed at one end, slidably contacts with an outer periphery of the inner rod, and defines, together with the inner rod, an extension-side chamber, and a piston that is provided on the piston rod, slidably contacts with an inner periphery of the cylinder, and defines a compression-side chamber between the cylinder and the piston rod, in which the bottom part has a communication hole leading to the annular gap, and the cylinder has coating formed on the inner periphery by surface treatment using an electrolytic solution.
Inventors:
Yoshiyuki Ogawa
Kosuke Sato
Ohno Fumiaki
Ryohei Arai
Kosuke Sato
Ohno Fumiaki
Ryohei Arai
Application Number:
JP2018014668A
Publication Date:
November 10, 2021
Filing Date:
January 31, 2018
Export Citation:
Assignee:
KYB Corporation
International Classes:
F15B15/14
Domestic Patent References:
| JP2004277812A | ||||
| JP2004011855A | ||||
| JP11291017A | ||||
| JP4096603U | ||||
| JP2002227807A | ||||
| JP2014051721A | ||||
| JP2018123847A |
Foreign References:
| US4867044 | ||||
| US4608912 |
Attorney, Agent or Firm:
Ken Ishikawa
Izumi Amano
Izumi Amano
Previous Patent: Throttle device
Next Patent: Acid gas absorber, acid gas removal method and acid gas removal device
Next Patent: Acid gas absorber, acid gas removal method and acid gas removal device