Shaft structure for cooling fan rotor

Details Shaft structure for cooling fan rotor Shaft structure for cooling fan rotor

2007-01-23

2007-01-23

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

With runner shaft of specific shape or material

C416S24400R

Reexamination Certificate

active

10875162

ABSTRACT:
A fan shaft structure includes an annular groove portion, an end head adjacent to the groove portion, and several teeth equally spaced around the surface of the shaft. The annular groove portion, end head and teeth constitute an insert part of the fan shaft, around which the plastic fan blade is molded by insert molding. The present invention enables the center part of the fan blade to enwrap the insert part of the shaft, and firmly engage with the shaft. It is, therefore, not only able to enhance the robustness of the combination but also successful in preserving the adhesion effect between the shaft and the fan blade.

REFERENCES:
patent: 5281099 (1994-01-01), Hunter et al.

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