Robert John Janashak, 66Santa Clarita, CA

5098024, Mar 24, 1992

Jul 27, 1990

7/559870

James S. MacIntyre - Long Beach CA
Robert J. Janashak - Placentia CA

Northrop Corporation - Los Angeles CA

B05B 1508

2395871

A spray end effector for spray painting internal cavities of complex shapes comprising a first elongated arm having an inboard end with attachment means for coupling to a robot and also having an outboard end; a second elongated arm having an inboard end fixedly coupled to the outboard end of the first arm and also having an outboard end; a third elongated arm having an inboard end pivotally coupled to the outboard end of the second arm and also having an outboard end with a rod for supporting a spray gun rotationally coupled with respect thereto; a first air motor having a shaft rotatable about its axis located within the second arm for rotating a jack screw and longitudinally driving a threaded housing to effect the pivotal movement of the third arm with respect to the second arm; a second air motor having a shaft rotatable about its axis located within the third arm for rotating a speed reducer to effect the rotational movement of the rod with respect to the third arm; and means to effect the proper rotational positioning of the rod and spray gun with respect to the third arm and workpiece.