Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive
Reexamination Certificate
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
07354246
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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Espinoza-Ibarra Ricardo
Malone Christopher G.
Simon Glenn C.
Hewlett--Packard Development Company, L.P.
Look Edward K.
Wiehe Nathan
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