HYDRAULIC SOURCE AND HYDRAULIC MACHINE

WIPO Patent Application WO/1994/028315

A1

A hydraulic source (20) comprises a hydraulic pump (62) driven by a motor (61), which operates based on the power and control data from a non-contact power feeding apparatus (30); a hydraulic tank (63); a solenoid valve (64); a relief valve (65); a hydraulic pressure gauge (66); a pilot check valve (67) for clamping and a pilot check valve (68) for unlocking that are interposed between the solenoid valve (64) and hydraulic cylinders (41a to 41d); a pressure switch (69) for clamping which is inserted into a piping for connecting the pilot check valve (67) and the hydraulic cylinders (41a to 41d); and a pressure switch (70) for unclamping which is inserted into a piping for connecting the pilot check valve (68) and the hydraulic cylinders (41a to 41d). This hydraulic source is combined with a hydraulic machine for applications where jig or jigs move freely to promote automation of machining, assembly and inspection of workpieces on a moving body.

HIRAI JUNJI (JP)
AOYAMA YOSHIO (JP)
HIRAGA YOSHIJI (JP)
HAMAMOTO HIROYUKI (JP)
HIROSE KENJI (JP)
NITTA YUJI (JP)
KOBA TATSUHIKO (JP)
WAKAO HIDEAKI (JP)

PCT/JP1993/001255

December 08, 1994

September 06, 1993

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YASKAWA DENKI SEISAKUSHO KK (JP)
HIRAI JUNJI (JP)
AOYAMA YOSHIO (JP)
HIRAGA YOSHIJI (JP)
HAMAMOTO HIROYUKI (JP)
HIROSE KENJI (JP)
NITTA YUJI (JP)
KOBA TATSUHIKO (JP)
WAKAO HIDEAKI (JP)

B25B5/06; (IPC1-7): F15B11/08

JPS6099304U	1985-07-06
JPS62158203U	1987-10-07
JPH04345008A	1992-12-01
JPH04252883A	1992-09-08
JPS5410181U	1979-01-23
JPH0419788U	1992-02-19
JPS56140609A	1981-11-04
JPS5721290A	1982-02-03

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