Abstract A target illuminator including a turret with an illumination source boresighted in a line of sight and duplicate apparatus for rotating the line of sight in azimuth and elevation without starting friction disposed between a pedestal and a head and the head and the turret, generally described as a pair of components with an axis normal to one thereof, beveled rotational members journaled in axial cruciform relation on the other of the components, a pair of beveled rings journaled on the other component for opposed engagement with the rotational members and corresponding motors disposed for opposite rotations of the rings for relative rotations of the components responsive to differences in the rotational speeds of the pairs of motors. A worm and wheel are secured between one of the apparatus and the turret for the vertical displacement of the line of sight.
Apparatus comprising a component and a shaft in journaled relation with the axis thereof in normal relation with said component; arms disposed in axial cruciform relation on said shaft; members rotatable on said arms; a pair of rings journaled on said shaft with said rings disposed for opposed beveled engagement with said rotatable members, and a pair of motors disposed on said component in respective driving engagement with said rings for continuous opposite rotations thereof and starting frictionless reversible rotations of said shaft responsive to differences in the rotational speeds of said motors.
Claim 2
Dependent Claim
93 words
Apparatus comprising a component and a shaft in journaled relation with the axis thereof in normal relation with said component; arms disposed in axial cruciform relation on said shaft; members rotatable on said arms; a pair of rings journaled on said shaft with said rings disposed for opposed beveled engagement with said rotatable members, and a pair of motors disposed on said component in respective driving engagement with said rings for continuous opposite rotations thereof and starting frictionless reversible rotations of said shaft responsive to differences in the rotational speeds of said motors.
Claim 3
Dependent Claim
85 words
A target illuminator comprising: a pedestal and a head with respective vertical and horizontal axes; and a turret including a tracking line with a source of laser illumination boresighted therein; and a pair of apparatus as in claim 1 with each said component thereof respectively secured in said pedestal and said head and the axes of the apparatus respectively coincident with the vertical and horizontal axes for corresponding rotations of said tracking line about said vertical and horizontal axes for tracking illumination of the target.
Claim 4
Dependent Claim
51 words
A target illuminator as in claim 2 with each of said motor pairs including a synchronous motor; a tachometer generator operated by the other motor of said pair and a compensation network feedback connected to limit the speed of said other motor for operation within the capacity of said synchronous motor.
Claim 5
Dependent Claim
32 words
A target illuminator as in claim 3 with a joystick connected to the compensation network for operation in normal directions respectively to control the speeds of the other vertical and horizontal motors.