Title:
複合シリンダ
Document Type and Number:
Japanese Patent JP3174246
Kind Code:
U
Abstract:
An oil-gas separated pressure cylinder, which combines a hydraulic cylinder, a pneumatic cylinder and a pres-pressure cylinder, and keeps the applied compressed gas and the storage hydraulic fluid apart, maintaining the quality of the hydraulic fluid and saving the hydraulic fluid replacement cost. When the applied compressed gas enters the pre-pressure cylinder to move a pre-pressure cylinder piston in forcing the storage hydraulic fluid out of an oil storage space of the pre-pressure cylinder into an oil storage space in the hydraulic cylinder, a hydraulic cylinder piston of the hydraulic cylinder is then forced by the hydraulic fluid to move a hydraulic cylinder piston rod against the workpiece, and then a pneumatic cylinder piston rod of the pneumatic cylinder is forced into the oil storage space of the hydraulic cylinder to enhance the pressure at the hydraulic cylinder piston rod against the workpiece.
Inventors:
Kure
Application Number:
JP2011007757U
Publication Date:
March 08, 2012
Filing Date:
December 28, 2011
Export Citation:
Assignee:
Nagataku Ryuhaku Technology Co., Ltd.
International Classes:
F15B3/00
Attorney, Agent or Firm:
Masaki Hattori