Title:
INTERNAL GEAR PUMP
Document Type and Number:
WIPO Patent Application WO/2013/061820
Kind Code:
A1
Abstract:
An internal gear pump provided with a pump rotor (4) in which the point of engagement between an inner rotor (2) having n teeth and an outer rotor (3) having (n+1) teeth is positioned rearward, with respect to the direction of rotor rotation, relative to an eccentric axis (CL) on which the inner rotor center (OI) and the outer rotor center (OO) are arranged. An internal gear pump in which the tooth surface curve in the vicinity of the portion of engagement of the outer rotor (3) is configured by transferring the tooth surface shape in the vicinity of the portion of engagement of the inner rotor (2).
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Inventors:
UOZUMI MASATO (JP)
Application Number:
PCT/JP2012/076659
Publication Date:
May 02, 2013
Filing Date:
October 16, 2012
Export Citation:
Assignee:
SUMITOMO ELECTRIC SINTERED ALY (JP)
International Classes:
F04C2/10
Domestic Patent References:
| WO2011058908A1 | 2011-05-19 |
Foreign References:
| JPH1061562A | 1998-03-03 | |||
| JPS5248805A | 1977-04-19 |
Attorney, Agent or Firm:
NISHIMA, Hideaki et al. (JP)
Hideaki Futajima (JP)
Hideaki Futajima (JP)
Download PDF:
Claims:
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