Patent ID: 8465199

Claim:
In a gyroscopic mixer of the type having a frame rotatable with respect to a non-rotating assembly in the mixer, the frame adapted to spin and tumble a paint container, a selectively operable frame positioning apparatus for stopping and holding the rotatable frame in an upright position, the apparatus comprising: a first stop block carried on the rotatable frame to move in a circular path as the frame rotates; and a second stop block mounted on the non-rotating assembly and movable between a first position out of the path of the first stop block and a second position in the path of the first stop block; and means for providing a predetermined delay in movement of the second stop block from the first position to the second position wherein at least one of the first and second stop blocks is resiliently mounted and wherein the rotatable frame is free to rotate when the second stop block is out of the path of the first stop block and the rotatable frame is held in the upright position when the second stop block is positioned in engagement with the first stop block.