Differential drive rolling arc gimbal

Details Differential drive rolling arc gimbal Differential drive rolling arc gimbal

1978-12-18

1980-12-09

Lieberman, Eli

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

343766, 74 1R, H01Q 308

Patent

active

042388023

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.

REFERENCES:
patent: 2512636 (1950-06-01), Flynt
patent: 3439550 (1969-04-01), Coulding

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