Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate
Reexamination Certificate
2006-08-08
2010-06-15
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Radially extending web or end plate
C416S203000, C416S22300B
Reexamination Certificate
active
07736129
ABSTRACT:
A cooling fan for rotating machine having a sufficient cooling performance, mass production performance and easiness in mounting is provided. A centrifugal fan mounted to a rotating shaft21of rotating machine for introducing a cooling air to the rotating machine, is provided with a hub12mounted at the rotating shaft, a main plate11formed in ring shape and disposed concentrically at the hub, a side plate14in ring shape having the outer circumference smaller than the inner circumference of the main plate and formed integrally with the hub so that it is disposed with an interval to the main plate in the axial direction of the rotating shaft, and a plurality of impeller blades13implanted on the hub and disposed along the axial direction of the rotating shaft and regularly in the radial direction so as to connect the main plate to the hub to form a space between the main plate, the side plate and the hub, some impeller blades13aof said impeller blades being constituted to reach the outermost circumference portion in the radial direction, while the others13breaching only the middle, wherein the main plate and the side plate are formed so that they are not overlapped with each other when seen from the axial direction of the rotating shaft.
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Denyo Kabushiki Kaisha
Ellis Ryan H
Jacobson & Holman PLLC
Look Edward
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