Patent ID: 6827310
Filing Date: 2004-12-07
Classification: B64C,F42B,Y10T

Abstract:
A fin actuator, in a portable missile, that substantially limits backlash, comprising:means for rotating a power shaft, said means for rotating operatively configured to rotate said power shaft in a forward direction and a reverse direction, said means for rotating being constrained from free movement by an actuator housing; means for converting rotational movement of said power shaft to linear movement, wherein said means for converting rotational movement of said power shaft includes a lead screw fixedly coupled to said power shaft, said lead screw having a lead nut threadingly engaged and moving linearly along said lead screw in relation to the direction of rotation of said power shaft; and means for converting said linear movement of said lead nut to rotational movement of a fin shaft, wherein said means for converting said linear movement includes said lead nut operatively coupled to a crank arm including slots to allow freedom of movement, said crank arm fixedly coupled to said fin shaft, effecting the rotation of said fin shaft according to the linear movement of said lead nut.