Patent ID: 6978644

Claim:
An apparatus comprised of at least a first gear, a swing arm, a rod, a cam and an actuation arm wherein: said first gear is rotatably attached to a first hub which is perpendicularly affixed to a planar base, said first gear is equipped with a first set of teeth and is adapted to rotate around said first hub in a plane parallel to said planar base; said swing arm is rotatably attached to said planar base and is equipped with a second set of teeth adapted for intermeshing contact with said first set of teeth upon rotation of said first gear around said first hub; said rod is slidably mounted on said planar base and is adapted to control the rotation of said first gear around said first hub; said cam is rotatably attached to a cam axle which is perpendicularly affixed to said planar base, and is equipped with means to linearly move said rod upon rotation of said cam around said cam axle; and said actuation arm is affixed to said planar base and is equipped with means to rotate said cam around said cam axle; further wherein said cam is a substantially circular plate having a first slot, a first groove, shoulder means for linearly moving said rod, a top surface and a bottom surface; said first slot penetrates said cam from said top surface to said bottom surface and extends radially from the edge of said cam toward said cam axle; said first groove is formed in at least a peripheral portion of said cam between said top surface and said bottom surface, extends from the edge of said cam toward said cam axle, and intersects said first slot; said actuation arm is comprised of a housing and a cylinder; said housing is fixed to said planar base and is positioned thereon to avoid contact with said cam, said housing has two open ends and a hollow interior wherein at least one coil, adapted to conduct an electric current, is positioned in said hollow interior; said cylinder includes a solid portion and hollow portion having a closed end, wherein said solid portion is adapted to longitudinally slide within said at least one coil in said hollow interior of said housing, and said hollow portion is slidably positioned within said first groove of said cam; said hollow portion of said cylinder contains a second slot, a first biasing spring, a second biasing spring and a pin positioned between said first biasing spring and said second biasing spring; said second slot is formed in opposite walls of said hollow portion of said cylinder, is parallel to the longitudinal axis of said cylinder, and intersects said first slot when said cylinder is positioned in said in said first groove; said pin is positioned in said hollow portion of said cylinder perpendicular to said longitudinal axis of said cylinder and extends from said second slot into said first slot, whereby linear movement of said cylinder is converted by said pin to rotational movement of said cam to thereby linearly move of said rod to control rotation of said at least first gear.