Worm driving a servo actuator with spring return and rotary...

Details Worm driving a servo actuator with spring return and rotary... Worm driving a servo actuator with spring return and rotary...

F - Mech Eng,Light,Heat,Weapons

02

D

F02D 11/10 (2006.01) F02D 9/10 (2006.01) F16K 31/04 (2006.01) F16K 31/53 (2006.01) F02D 9/02 (2006.01)

Patent

CA 2325273

A motorized servo actuator has an output shaft rotated by a sector gear driven by a worm. The worm has a co-axially disposed torsion spring which is wound as the worm rotates. The worm is driven by a motor and gear train. In the event of motor failure during rotation of the sector gear in a given direction from an initial position, the wound torsion spring has sufficient stored energy to rotate the worm to return the sector gear to the initial position.

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