Fluid reaction surfaces (i.e. – impellers) – Working member foldable – pivotable or collapsible to non-use... – Member movement in rotation plane
Reexamination Certificate
2006-10-24
2009-08-04
Kershteyn, Igor (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Working member foldable, pivotable or collapsible to non-use...
Member movement in rotation plane
C416S151000, C416S155000, C416S16800R, C416S16900R
Reexamination Certificate
active
07568888
ABSTRACT:
A variable pitch fan blade mechanism, particularly well suited for automotive applications, wherein the blade pitch is compliantly responsive to selective actuation of a linear actuator. A linear actuator is disposed in the fan shaft composed of an electric drive component drivingly engaged with a follower component, a set of fan blades resiliently attached to a head of the follower component, and a push assembly connected to the fan shaft composed of a push plate and a plurality of push rods, one push rod for each fan blade. Each push rod engages its respective fan blade adjacent an edge thereof. The fan blades are resiliently biased toward the push rods such that axial movement of the push rods in response to actuation of the linear actuator results in compliant changes of pitch of the blades.
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GM Global Technology Operations Inc.
Kershteyn Igor
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