Title:
PRESSURE OIL SUPPLYING APPARATUS
Document Type and Number:
WIPO Patent Application WO/1998/041765
Kind Code:
A1
Abstract:
A pressure oil supplying apparatus comprises variable displacement type hydraulic pump units (10) having a common drive shaft and a plurality of independent discharge ports (10a, 10b), a plurality of circuits (11, 12) connecting a plurality of actuators (17, 18), respectively, to the plurality of discharge ports, operating valves (13, 14) respectively provided on the plurality of circuits, pressure compensating valves (15, 16) respectively provided on the plurality of circuits and set at the highest load pressure for the plurality of actuators, and a confluence valve (19) provided between the plurality of circuits for shutting off the plurality of circuits when the plurality of discharge ports are equal in pressure to one another and for providing communication therebetween when pressure differences are produced between the discharge ports.
Inventors:
YOSHIDA NOBUMI (JP)
ENDO HIROSHI (JP)
ENDO HIROSHI (JP)
Application Number:
PCT/JP1998/001043
Publication Date:
September 24, 1998
Filing Date:
March 12, 1998
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
YOSHIDA NOBUMI (JP)
ENDO HIROSHI (JP)
YOSHIDA NOBUMI (JP)
ENDO HIROSHI (JP)
International Classes:
F15B11/04; E02F9/22; F15B11/05; F15B11/16; F15B11/17; (IPC1-7): F15B11/00
Foreign References:
| JPS57116967A | 1982-07-21 | |||
| JPH0384204A | 1991-04-09 | |||
| JPH07158559A | 1995-06-20 | |||
| JPH05126104A | 1993-05-21 | |||
| JPH0942205A | 1997-02-10 |
Attorney, Agent or Firm:
Hamamoto, Tadashi (5-16 Toranomon 1-chom, Minato-ku Tokyo, JP)
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