Abstract: A centrifugal air conditioner for both heating and cooling comprising a housing enclosed cylinder to be rotated during operation by conventional means so that air is caused to enter one end of the cylinder and accelerated in a circular path causing a vortex effect to centrifugally separate the hot air from the cold air. The cylinder having air outlets to release the hot air and the cold air separately. The housing having means for collecting and exiting the hot and cold air separately.

Abstract: Disclosed is a sucker rod adjustment tool which enables the adjustment of effective sucker rod length for pumps used in oil wells, to be made in an efficient and timely manner. The tool consists of two cable slings from which two hydraulic servos are suspended and a lifting collar is attached at the lower ends of the hydraulic servos; all so arranged as to lift the sucker rod through its supporting member to allow adjustment when the hydraulic servos are retracted.