Title:
SPOOL VALVE
Document Type and Number:
Japanese Patent JP2001141079
Kind Code:
A
Abstract:
To provide and maintain high dimensional accuracy required for a spool at lower cost.
The spool 12 consists of a base member 12a made of polyphenylene sulfide resin, four annular land members 12b1 to 12b4 made of aluminum material which are fixed apart in the axial direction from each other on an outer peripheral side of the base member 12a, and a bearing ball 15 which is fixed in a central section at one end of the base member and comes into contact with a pressing member 14. The base member 12a, the land members 12b1 to 12b4, and the bearing ball 12c are integrated by an insert molding method.
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Inventors:
NIIMI SHIGEKI
YOSHIDA MASAHIRO
MAEDA KAZUHIKO
YOSHIDA MASAHIRO
MAEDA KAZUHIKO
Application Number:
JP32470599A
Publication Date:
May 25, 2001
Filing Date:
November 15, 1999
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F16K3/314; (IPC1-7): F16K3/314