Servo device, especially for reversing gears in motorboats

Details Servo device, especially for reversing gears in motorboats Servo device, especially for reversing gears in motorboats

F - Mech Eng,Light,Heat,Weapons

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74/205

F16H 25/12 (2006.01) F16H 3/14 (2006.01) G05G 19/00 (2006.01)

Patent

CA 1074593

ABSTRACT OF THE DISCLOSURE A servo device is disclosed intended for amplifying the force in a mechanical control apparatus, movable in two opposite directions when said apparatus is displaced in either direction, comprising two gears rotatably disposed in a housing and coaxial with a rotatable shaft. The gears are driven in counter-rotation by a conical pinion or by two counter-rotating cylindrical pinions in driving relation to a rotatable servo motor. A nut is screwably arranged on screw splines on the shaft between the gears. When screwed along said splines, the nut comes into frictional contact via annular friction surfaces with corre- sponding annular surfaces on the gears. The nut, the splines and one of the gears makes a releasable driving connection with each other. Radially directed arms are attached to the shaft and the nut with control cable attachment means for transmitting the input operating force to one arm while an additional force is contributed from either gear via the shaft and splines to the other arm.

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