Title:
HYDRAULIC ACTUATOR
Document Type and Number:
Japanese Patent JPH04282003
Kind Code:
A
Abstract:
PURPOSE: To apply a wide range of loads accurately to a hydraulic actuator.
CONSTITUTION: There is provided to a rod 2 inserted to a cylinder 1 a large piston 3a and a small piston 3c which have different pressure bearing areas, and line valves 6a, 6c for line changeover use are fitted to pressure lines 5a, 5c respectively to connect the respective pistons 3a, 3c to a pressure pump 4, and at the same time, both side chambers of the large piston 3a and the small piston 3c are respectively communicated through balance valves 7a,7c.
Inventors:
NOGUCHI YOSHIHARU
Application Number:
JP6786591A
Publication Date:
October 07, 1992
Filing Date:
March 07, 1991
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F15B15/14; (IPC1-7): F15B15/14
Attorney, Agent or Firm:
Yoshihiko Iinuma
Previous Patent: R−T−B系焼結磁石用合金粉末、その製造方法及びR−T−B系焼結磁...
Next Patent: REGULATING VALVE CONTROL MECHANISM
Next Patent: REGULATING VALVE CONTROL MECHANISM