Title:
PRESSURE TRANSMISSION MEDIUM AND HYDRAULIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/005022
Kind Code:
A1
Abstract:
Provided is a pressure transmission medium which contains, as a pressure transmission medium base oil, an ester or an ether having two or more aromatic rings or saturated naphthene rings. The pressure transmission medium is small in energy loss by compression, excellent in responsiveness when used in a hydraulic circuit, saving energy in the hydraulic circuit, increasing speed, improving the accuracy of control, having low viscosity and small agitating resistance, and saving energy. Also provided is a hydraulic device using the medium.
Inventors:
TSUBOUCHI TOSHIYUKI (JP)
HIRONAKA YOSHIO (JP)
HIRONAKA YOSHIO (JP)
Application Number:
PCT/JP2009/062433
Publication Date:
January 14, 2010
Filing Date:
July 08, 2009
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
TSUBOUCHI TOSHIYUKI (JP)
HIRONAKA YOSHIO (JP)
TSUBOUCHI TOSHIYUKI (JP)
HIRONAKA YOSHIO (JP)
International Classes:
C10M105/32; C10M105/36; C10M105/48; C10N20/02; C10N30/00; C10N40/08
Foreign References:
| JPH01287061A | 1989-11-17 | |||
| JPH01316340A | 1989-12-21 | |||
| JP2000119672A | 2000-04-25 | |||
| JPH08259520A | 1996-10-08 | |||
| JP2003119482A | 2003-04-23 | |||
| JPS4837568A | 1973-06-02 | |||
| JP2006306986A | 2006-11-09 | |||
| JP2000119672A | 2000-04-25 | |||
| JPH06200277A | 1994-07-19 |
Other References:
See also references of EP 2302022A4
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
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