Abstract: Disclosed in the field of the four-cycle reciprocating piston internal combustion engine is an invention for a rotary ported intake and exhaust system and super-atmospherically charged on demand engine. This invention replaces the inefficient reciprocating valve system with a friction free rotating shaft with ports and passageways to produce the four cycles of the engine. It also replaces the accessory externally mounted compressors now used to super charge the engine by the use of two cylinders sharing the same minimum volume totally closed crankcase. As both pistons travel upward, they draw in air or air/fuel or that amount desired through a throttle body into the crankcase. As they travel downward, that cylinder on its intake cycle draws in air/fuel while the volume in the crankcase is compressed. Prior to the completion of the intake cycle, the crankcase pressure is released into that cylinder on its intake cycle super-atmospherically charging it. These cycles are then repeated for the other cylinder.

Abstract: Scrubbing and drying apparatus particularly suited for use in scrubbing and drying printed circuit boards is disclosed. The apparatus is characterized by single knob precision adjustment of the scrubbing rollers incorporated therein and quiet operation at noise levels well within employee noise safety limits by the elimination of high pressure air nozzles typically employed in such scrubbing and drying apparatus according to the prior art. A novel anti-sway mounting is employed in conjunction with the scrubbing rollers to affect the single knob adjustment capability. A chamois covered roller is used to blot the surface of the board of substantially all its water content prior to final drying by low pressure airstreams.