GEAR PUMP, FUEL SUPPLY DEVICE USING IT, AND GEAR MOTOR

WIPO Patent Application WO/2000/055504

A1

A gear pump and a gear motor capable of providing a high volumetric efficiency and a high durability at low cost, comprising side plates (6, 7) disposed between gears (3, 4) and casings (1, 2) slidably on the side surfaces of the gears (3, 4), wherein fluid supply paths (23 to 26, 30, 31, 43 to 46) are formed on the sliding surfaces of the side plates with the gears so as to lubricate the sliding surfaces, and the inlet sides of the fluid supply paths are connected to a suction port (8) and the outlet sides of them are connected to the suction side located at the meshed part of the gears, the gear pump being used for an engine fuel injection device.

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NOGAMI TADAHIKO (JP)
HIRAKU KENJI (JP)
SADAMORI HIROYUKI (JP)
KADOMUKAI YUUZOU (JP)
KAMEYA HIROTAKA (JP)
TAKAO KUNIHIKO (JP)
KURITA MASAYUKI (JP)
TAKAHASHI YUKIO (JP)

PCT/JP1999/001320

September 21, 2000

March 17, 1999

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HITACHI LTD (JP)
NOGAMI TADAHIKO (JP)
HIRAKU KENJI (JP)
SADAMORI HIROYUKI (JP)
KADOMUKAI YUUZOU (JP)
KAMEYA HIROTAKA (JP)
TAKAO KUNIHIKO (JP)
KURITA MASAYUKI (JP)
TAKAHASHI YUKIO (JP)

F02M37/04; F04C15/00; (IPC1-7): F04C2/18; F02M37/06; F03C2/08

JPS4943605B1	1974-11-22
JPS521605A	1977-01-07
JPS53141908A	1978-12-11
JPS25715B1	1950-03-22
JPH0710482A	1995-01-13
JPH10252589A	1998-09-22
JPS5359703U	1978-05-22

Sakuta, Yasuo (Ltd. 5-1, Marunouchi 1-chome Chiyoda-ku Tokyo, JP)

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