Fan rotor systems having collapsible fan blades

Details Fan rotor systems having collapsible fan blades Fan rotor systems having collapsible fan blades

2006-05-30

2006-05-30

Datskovskiy, Michael (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S694000, C415S066000, C416S001000

Reexamination Certificate

active

07054156

ABSTRACT:
A fan rotor system for cooling an electronic system includes a rotor body configured to be rotated by a fan motor and at least one collapsible fan blade mounted on the rotor body for moving cooling air through the electronic system. The at least one collapsible fan blade has a first air driving position, wherein the fan blade moves cooling air in a desired direction for cooling the electronic system, and a second air passage position, wherein the at least one collapsible fan blade is collapsed to allow cooling air to pass the at least one collapsible fan blade with less drag than when the at least one collapsible fan blade is in the first air driving position. The at least one collapsible fan blade is movable between the first air driving position when the rotor body is rotating and the second air passage position when the rotor body is not rotating.

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The Article “Ultral Reliable Fan”, IBM Technical Disclosure Bulletin, Mar. 1996, US□□□□vol. # 39; Issue #3; pp. 345-346.

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