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Patent Searching and Data


Title:
COOLANT PUMP
Document Type and Number:
Japanese Patent JP2004360677
Kind Code:
A
Abstract:

To solve the following problem with a conventional coolant pump: a boundary friction state is made to damage a bearing surface because of the use of an expensive bush in a bearing which does not have such a structure as to positively flow coolant to between a driving shaft and the bearing.

A groove 26 is structured in a communication hole 18, an annular groove 17 and a cylinder bearing 8 in the driving shaft 11 so that coolant may be supplied to the bearing portion. With this constitution, the coolant is positively supplied to the bearing portion, thus realizing a profitable plain bearing against wear.


Inventors:
Nakano, Masao
Wakabayashi, Toshio
Application Number:
JP2004000027416
Publication Date:
December 24, 2004
Filing Date:
February 04, 2004
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F04C18/10; F04C2/10; F04C11/00; F04C15/00; F04C29/00; F04C29/02; (IPC1-7): F04C18/10; F04C29/00; F04C29/02
Attorney, Agent or Firm:
板垣 孝夫
森本 義弘