Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Reexamination Certificate
2008-07-01
2008-07-01
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
C415S160000
Reexamination Certificate
active
11296315
ABSTRACT:
A variable-pitch stator vane stage in which the vanes are moved by a rotary actuator ring driven by an electric motor. The outer actuator ring is connected by cranks to the vanes and is constrained to move in rotation only, centered on the axis of the turbomachine; the drive system includes two coaxial portions, an inner portion secured to the casing and an outer portion including the actuator ring, with an electrical drive unit being arranged between the two portions.
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patent: 2 688 827 (1993-09-01), None
Kershteyn Igor
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
SNECMA
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