Title:
多段位置決めが可能なアクチュエータ
Document Type and Number:
Japanese Patent JP3620888
Kind Code:
B2
Abstract:
PURPOSE: To minimally suppress changing of a displacement amount of an outer side piston accompanied with temperature change to an extent that there is no problem in practical use, even in case of making a cylinder case of aluminum alloy. CONSTITUTION: An outer side piston 31a can be displaced in a range that an engaging protruded part 63 can be displaced in the inside of an engaging recessed part 64. Since an absolute value of thickness dimension T64 of the engaging recessed part 64 is small, the displacement amount L31a is small suppressed even by thermal expansion of a cylinder case 29a by a temperature change.
Inventors:
Hiroshi Nara
Application Number:
JP7494995A
Publication Date:
February 16, 2005
Filing Date:
March 31, 1995
Export Citation:
Assignee:
Miwa Seiki Co., Ltd.
International Classes:
F02B47/08; F02M25/07; F15B15/24; (IPC1-7): F15B15/24; F02B47/08; F02M25/07
Domestic Patent References:
| JP61099707A | ||||
| JP3219103A | ||||
| JP547402U | ||||
| JP893575A | ||||
| JP8177649A | ||||
| JP8270609A |
Attorney, Agent or Firm:
Kinzo Koyama
Takeo Koyama
Takeo Koyama