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An air turbine starter valve able to open despite being frozen shut. Dual actuators apply sufficient torque upon an air turbine starter valve to overcome obstructions presented by frozen moisture. By applying separate and generally-aligned torques, the actuators are able to provide sufficient force

An air turbine starter valve able to open despite being frozen shut. Dual actuators apply sufficient torque upon an air turbine starter valve to overcome obstructions presented by frozen moisture. By applying separate and generally-aligned torques, the actuators are able to provide sufficient force to overcome the adhesion provided by frozen moisture between the valve plate and adjacent structures.

대표청구항 ▼

An air turbine starter valve able to open despite being frozen shut. Dual actuators apply sufficient torque upon an air turbine starter valve to overcome obstructions presented by frozen moisture. By applying separate and generally-aligned torques, the actuators are able to provide sufficient force

An air turbine starter valve able to open despite being frozen shut. Dual actuators apply sufficient torque upon an air turbine starter valve to overcome obstructions presented by frozen moisture. By applying separate and generally-aligned torques, the actuators are able to provide sufficient force to overcome the adhesion provided by frozen moisture between the valve plate and adjacent structures. No. 7B. CO2 Snow/Pellet Cleaning/Super Critical Fluid Precision Cleaning: Dec. 1995: vol. III. No. 11, p. 48. Robert Sherman; John Grob and Walter Whitlock; Dry Surface Cleaning Using Co2 Snow: Journal Of Vacuum Science & Technology B. Second Series, vol. 9, No. 4, Jul./Aug. 1991; pp. 1970-1977. Wayne T. McDermott, Richard C. Ockovic, Jin Jwang Wu and Robert J. Miller; Removing Submicron Surface Particles Using A Cryogenic Argon-Aerosol Technique: Microcontamination: Oct. 1991; pp. 33-36 and 94-95. International Search Report for corresponding PCT Application No. PCT/US97/11812 dated Nov. 10, 1997. 10 MHz Ultrasonic Silicon Cleaning Tool, IBM Technical Disclosure Bulletin, vol. 37, No. 6A, p. 585, Jun. 1, 1997.