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Title:
TANDEM VANE PUMP
Document Type and Number:
Japanese Patent JP2005273461
Kind Code:
A
Abstract:

To reduce pulsations in a tandem vane pump equipped with a pair of pump mechanisms P1, P2.

In a composition of a tandem vane pump, a pair of pump mechanisms P1, P2 formed by assembling cam rings 4, 5 in bodies 1, 2 and incorporating in each of the cam rings 4, 5 the rotors 10, 11 to which a plurality of vanes 8, 9 are retractively provided, are driven with the same driving shaft 12. The numbers of both pump mechanisms P1, P2 are made different. One example is that the number of vane in one pump mechanism P1 are taken as 12 and that in the other pump mechanism P2 are taken as 10.


Inventors:
Arita, Tsunefumi
Fujita, Tomoyuki
Shiozaki, Hiroshi
Application Number:
JP2004000083837
Publication Date:
October 06, 2005
Filing Date:
March 23, 2004
Export Citation:
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Assignee:
KAYABA IND CO LTD
International Classes:
F04C2/344; F04C11/00; F04C15/00; F04C15/06; (IPC1-7): F04C11/00; F04C2/344; F04C15/00
Attorney, Agent or Firm:
嶋 宣之