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US 5,687,562 AGranted
Bypass air valve for turbofan engine
AssigneeUnited Technologies Corporation
InventorsJeffrey B. Stewart, Alan B. Minick
Life of this patent
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Abstract
A bypass air valve is provided which includes a liner, a strap, apparatus for biasing the strap into contact with the liner, a selective actuator, and apparatus for passage of bypass air. To open and close the valve, the selective actuator unwraps a segment of the strap from the liner before the strap is translated a distance around the circumference of the liner. The biasing apparatus biases the strap back into contact with the liner.
Claims16
A bypass air valve in a turbofan engine, comprising:
- a liner, having a circumference;
- a strap, surrounding said liner, having a width, a length, a first flange attached to a lengthwise end of said strap, and a second flange attached to the other lengthwise end of said strap;
- means for biasing said strap in contact with said liner, said biasing means attached to said strap;
- a selective actuator, for unwrapping a segment of said strap from said liner and circumferentially translating said strap a distance around said circumference of said liner;
- and
- means for passage of bypass air through said liner and said strap.
3 more elements
Dependencies are inferred from the claim text.