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Patent Searching and Data


Title:
VANE PUMP
Document Type and Number:
WIPO Patent Application WO/2014/136646
Kind Code:
A1
Abstract:
This vane pump is provided with a rotor, a vane, a cam ring, a pump chamber, a suction pump, a discharge pump, a back pressure chamber, a discharge-side back pressure pump that leads a working fluid discharged from the discharge pump to the back pressure chamber, and a suction-side back pressure pump that leads the working fluid to the back pressure chamber. The suction-side back pressure pump is formed dividing: a low-pressure pump that leads the working fluid of the suction pump to the back pressure chamber; and a high-pressure pump that leads the working fluid discharged from the discharge pump to the back pressure chamber. The high-pressure pump is disposed to the anterior side in the direction of the rotor with respect to the low-pressure pump.

Inventors:
AKATSUKA KOICHIRO (JP)
FUJITA TOMOYUKI (JP)
KATO FUMIYASU (JP)
Application Number:
PCT/JP2014/054845
Publication Date:
September 12, 2014
Filing Date:
February 27, 2014
Export Citation:
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Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
F04C2/344
Foreign References:
JP2011196359A2011-10-06
JP2008057361A2008-03-13
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
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