Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Concave surface
Reexamination Certificate
2006-07-04
2006-07-04
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Concave surface
C416SDIG004
Reexamination Certificate
active
07070392
ABSTRACT:
Impeller blades and a method for designing impeller blades wherein the blades comprise a plurality of specially designed airfoil sections, each section having along substantially the entire length thereof, a cross-sectional shape characterized by a maximum thickness located substantially constantly between about 16% chord to about 23% chord and a maximum camber located substantially constantly between about 40% chord to about 51% chord. The blades are designed so that the axial width of the blades is decreased while maintaining performance parameters and design constraints.
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Bradbury Phillip James
Jenkins, Jr. Chalmers R.
Nguyen Phep Xuan
Edgar Richard A.
Minebea Co. Ltd.
Townsend and Townsend / and Crew LLP
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