Electronics cooling fan with collapsible fan blade

Details Electronics cooling fan with collapsible fan blade Electronics cooling fan with collapsible fan blade

2008-04-08

2008-04-08

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Impeller rotation speed responsive

C416S051000, C416S088000, C416S13200B, C416S143000, C416S240000

Reexamination Certificate

active

11260095

ABSTRACT:
An electronics cooling fan comprises at least one collapsible fan blade driven by centrifugal force to extend radially as the fan spins and driven by elastic force to retract as spinning slows or stops.

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patent: 2004/0141288 (2004-07-01), Franz et al.
patent: 2005/0047087 (2005-03-01), Espinoza-Ibarra et al.

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