Title:
OIL PUMP DEVICE
Document Type and Number:
Japanese Patent JP2004108337
Kind Code:
A
Abstract:
To provide an oil pump device having a relief valve of simple structure so as to reduce the cost and size of the device.
This oil pump device comprises a relief valve 7 formed by stacking a plurality of plate valves 71, 72, and 73 opened so that oil in a delivery passage 13a is circulated to a suction passage 12a or an oil pan when the oil in the delivery passage 13a reaches specified pressure.
Inventors:
KOGA HIROYOSHI
KURUMI TAKAYUKI
KURUMI TAKAYUKI
Application Number:
JP2002275464A
Publication Date:
April 08, 2004
Filing Date:
September 20, 2002
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F04B53/10; (IPC1-7): F04B53/10