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Patent Searching and Data


Title:
GEAR PUMP
Document Type and Number:
Japanese Patent JP2005002894
Kind Code:
A
Abstract:

To change delivery capacity with reducing surplus discharge.

Discharge carried into a delivery port 72 from an intake port 52 is smaller than that of a first driven gear 101 side by q2 per a space between two teeth of a driven gear. Discharge returned to the intake port 52 from the delivery port 72 is greater than that of the first driven gear 101 side by q3 per a meshing space of a drive gear and the driven gear as shown in the figure (b). Discharge carried into the delivery port 72 from the intake port 51 by the drive gear 3 is constant. Consequently, discharge delivered from the delivery port 72 by a second driven gear 102 can be smaller than discharge delivered from a delivery port 71 by the first driven gear 101 by drive gear tooth number times of q2+q3 per a revolution of the drive gear.


Inventors:
Yoshida, Michio
Toyokawa, Shuji
Ibaraki, Takatsugu
Application Number:
JP2003000167539
Publication Date:
January 06, 2005
Filing Date:
June 12, 2003
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F04C2/20; F04C2/10; F04C2/18; F04C11/00; F04C14/18; (IPC1-7): F04C2/20; F04C2/10; F04C2/18; F04C11/00