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Patent Searching and Data


Title:
HYDRAULIC ACTUATOR OPERATING DEVICE
Document Type and Number:
Japanese Patent JPS5894601
Kind Code:
A
Abstract:
PURPOSE:To enable replacement of the working oil with fresh working oil every time only in a small amount by providing a working oil supply stroke zone, in addition to an actuator reciprocating stroke zone, in a rotary cam for operating a hydraulic pump. CONSTITUTION:When a rotary can 5 is further rotated over an actuator advancing stroke zone A-B and a return stroke zone C-D and enters a working oil supply stroke zone D-A, the working oil delivered from a low-pressure oil supplier 11 is supplied to a hydraulic pump 4 through a pipeline 12 and a pipeline 8. As described above, the oil confined between a hydraulic actuator 1 and hydraulic pump 4 is circulated every time only by a small amount according to the reciprocating operation of the device, and replaced with fresh working oil.

Inventors:
KATOU HISAAKI
OOKAWA YUKIO
Application Number:
JP18990181A
Publication Date:
June 04, 1983
Filing Date:
November 28, 1981
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
F15B7/02; F15B11/08; (IPC1-7): F15B1/00; F15B11/00
Domestic Patent References:
JPS4716875A
JPS5413881A1979-02-01
Attorney, Agent or Firm:
Soyama Saburo