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Patent Searching and Data


Title:
GEAR PUMP
Document Type and Number:
Japanese Patent JP2005036656
Kind Code:
A
Abstract:

To improve the volumetric efficiency of a pump with relatively high operating frequency.

This gear pump 100 includes tip seals A1, A2 formed between the tooth 3t of a drive gear 3 and a casing 1 to reduce an amount of fluid leaked from a second intake port 52 to a first delivery port 71 and an amount of fluid leaked from a first intake port 51 to a second delivery port 72. In this gear pump 100, the ports are disposed so that the first intake port 51 approaches to the second delivery port 72, and the second intake port 52 separates from the first delivery port 71. Thus, the first tip seal A1 of a first intake/delivery part 1001 can be increased larger than the second tip seal section A2 of a second intake/delivery part 1002.


Inventors:
Yoshida, Michio
Ibaraki, Takatsugu
Yamashita, Toshiya
Application Number:
JP2003000197340
Publication Date:
February 10, 2005
Filing Date:
July 15, 2003
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F04C2/18; F04C11/00; F04C14/02; F04C14/24; (IPC1-7): F04C2/18; F04C11/00; F04C15/04