Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet
Reexamination Certificate
2007-01-31
2010-12-28
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having tangential inlet or outlet
C415S204000
Reexamination Certificate
active
07857583
ABSTRACT:
The present invention relates to a base design of cooling structure, which includes a base, and a shaft tube disposed on the base to support a spindle of an impeller to rotate therein. The base has at least a groove and the groove is located beyond an outer diameter; the groove design can be employed to effectively prevent the issue of contraction stress caused by difference of cooling time of temperature and to prevent a slanted shaft tube for supporting a stable operation of the spindle of the impeller, thereby avoiding the resulting run-out and noise, making vibration and noise test values of the product comply with a standard value range, reducing the defective rate of the product and prolonging the product lifespan.
REFERENCES:
patent: 6616422 (2003-09-01), Hsieh
patent: 2007/0222331 (2007-09-01), Horng et al.
Horng Alex
Li Tung Cheng
Kamrath Alan
Kamrath & Associates PA
Look Edward
Sunonwealth Electric Machine Industry Co. Ltd.
White Dwayne J
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