Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Reexamination Certificate
2006-08-25
2009-12-08
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
With sound or vibratory wave absorbing or preventing means...
C415S189000, C415S190000, C415S191000
Reexamination Certificate
active
07628578
ABSTRACT:
A vane for a vane assembly of a gas turbine engine includes a vane root connected to the airfoil portion opposite a tip thereof. The vane root includes a platform and a button portion interconnecting the platform and the airfoil position. The button portion has relatively blunt leading and trailing ends which respectively protrude beyond leading and trailing edges of the airfoil portion.
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Barnett Barry
Denis David
Kershteyn Igor
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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