Title:
GEAR PUMP
Document Type and Number:
Japanese Patent JP3682557
Kind Code:
B2
Abstract:
PURPOSE: To aim at quick retreat of fluid reaching the vicinity of a contact end surface or a shaft hole end part on account of internal leakage by neither making the construction of a pump complicated nor making an internal temperature increased.
CONSTITUTION: All of the oil whose temperature has been enhanced on account of internal leakage is once returned directly to a tank through a drain passage 7, etc., by never being allowed of flow back to a suction port 15 side. Accordingly, there is no chance of the internal temperature of a case 11, etc., increasing illegally. Additionally, since the case 11, etc., are surrounded by the tank, any oil flowing out of the drain passage 7, etc., has no chance of causing environmental pollution by its splashing and is securely dropped in the tank to be collected.
Inventors:
Eiji Shibahara
Application Number:
JP13626395A
Publication Date:
August 10, 2005
Filing Date:
June 02, 1995
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F04C2/12; F04C2/18; (IPC1-7): F04C2/18
Domestic Patent References:
| JP1097081U |
Attorney, Agent or Firm:
Kazuhiro Akazawa
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