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Title:
PUMP SYSTEM
Document Type and Number:
Japanese Patent JP2003013846
Kind Code:
A
Abstract:

To provide a pump system capable of stably sending out small quantity of fluid by using a plurality of pumps.

This system is composed of a sending out gear pump 20 connected to a first pipe 42 led out of a storage tank 12 and sending out fluid, a return gear pump 30 connected to a second pipe 48 led out of the storage tank 12 and having a suction port 38 connected to a bypass pipe 44 connected to a discharging port of the sending out gear pump 20 and returning fluid from the sending out gear pump 20 to the storage tank 12, and a third pipe body 46 branching off from the bypass pipe 44 and supplying required quantity of fluid to an external hydraulic apparatus. Fluid of quantity subtracted by required quantity of fluid for sending out to the third pipe body 46 from quantity of fluid sent out of the storage tank 12 by using the sending out gear pump 20 is returned to the storage tank 12 through the return gear pump 30.


Inventors:
Ito, Takuya
Kobayashi, Kenji
Morita, Haruo
Application Number:
JP2001000199787
Publication Date:
January 15, 2003
Filing Date:
June 29, 2001
Export Citation:
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Assignee:
INOAC CORP
ROGERS INOAC CORP
International Classes:
F04C2/18; F04B23/04; F04C11/00; F04C13/00; F04C14/02; F04C14/24; (IPC1-7): F04B23/04; F04C2/18; F04C11/00; F04C13/00; F04C15/04
Domestic Patent References:
JPS6295190A
Attorney, Agent or Firm:
山本 喜幾