Abstract: A camshaft having a tubular steel shaft and a sintered cam piece joined to the shaft. The sintered cam piece has iron tetroxide film at its surface. The camshaft is produced by assembling a powder compact to the steel shaft to provide a camshaft assembly, sintering the assembly to provide an integral assembly, correcting bending to the assembly, annealing the assembly, grinding the cam piece and effecting vaporization treatment to the assembly at a temperature lower than the annealing temperature.

Abstract: A pedestal gimbal drive assembly includes a yoke and a cross shaft mounted for movement about separate orthogonal axes for affording a sensing platform for being driven by differential drive mechanism for sweeping a hemispherical segment. One embodiment of the drive means includes an endless cable drivingly connected by means of two separate reversible motors to a pair of fixed pulleys on the platform and trailed over a plurality of idler pulleys and operative to move the platform in the desired motion. An alternate embodiment includes a driven gear connected to the ring and a pair of bevelled gears connected to the driven gear and connected by link members to the two independent reversible motors.

Abstract: A gimbal assembly includes an outer arcuate yoke gimbal member mounted on rollers to rotate about its axis and an inner gimbal member includes a platform pivotally mounted in the yoke to rotate about a second axis. Two drive motors are separately and independently connected through independent cable drive assemblies to separate ones of the inner and outer gimbal members and functions either individually or together to rotate the gimbal members selectively or both together in a combination of motion. In one form, the two drive motors are co-axially mounted in the base of the gimbal assembly. In another form the gimbal drive motors are co-axially mounted with the outer housing of one motor forming the drive pulley for the other drive assembly. In another arrangement the motors are disposed on adjacent parallel axes with one drive motor for the inner gimbal having co-axially disposed drive pulleys for the drive cable.

Abstract: A gimbal assembly in which the outer gimbal member is an arcuate yoke mounted on rollers to rotate about one axis, and the inner gimbal member is a platform pivotally mounted in the yoke to rotate about a second orthogonal axis. Two motors are connected through a differential drive system to rotate either gimbal member selectively or both together in any combination of motions. In one form the differential drive is an endless cable extending around the outer gimbal member and around pulleys on the axis of the inner gimbal member. In a modified form the cable is crossed at one end to drive the inner gimbal member from both ends. In another form the differential drive includes split outer ring members driven individually by the two motors and coupled to the inner gimbal member by a rack and pinion drive.

Abstract: A gimbal assembly in which the outer gimbal member is an arcuate yoke mounted on rollers to rotate about one axis, and the inner gimbal member is a platform pivotally mounted in the yoke to rotate about a second orthogonal axis. Two motors are connected through a differential drive system to rotate either gimbal member selectively or both together in any combination of motions. In one form the differential drive is an endless cable extending around the outer gimbal member and around pulleys on the axis of the inner gimbal member. In a modified form the cable is crossed at one end to drive the inner gimbal member from both ends. In another form the differential drive includes split outer ring members driven individually by the two motors and coupled to the inner gimbal member by a rack and pinion drive.