Abstract: A variable compression ratio, direct injection engine. A rotatable collar in operative engagement with a cylinder liner holder assembly is utilized to raise and lower the cylinder liner relative to the crankshaft, thereby varying the compression ratio. A double chain drive mechanism maintains a constant valve timing relationship as the cylinder liner is raised and lowered. The head assembly is provided with a removable fire deck and a tapered intake port.

Abstract: A continuous and unidirectional rotation reversible pitch axial thrust heart pump having a blood handling housing with first inlet and outlet check valves connected to the housing and second inlet and outlet check valves connected to the housing. A first diaphragm is movable in the housing for alternately pumping blood into the first inlet and out of the first outlet valve. A second diaphragm is movable in the housing for alternately pumping fluid into second inlet and out of the second outlet valve. A continuous and unidirectional rotating axial thrust pump is positioned in a hydraulic fluid chamber between the diaphragms. The impeller includes a plurality of blades rotatably mounted on a circular bearing which is rotatably mounted in the housing. The pitch angle of the blades is alternately rotated and reversed which alternately directs the hydraulic fluid to each of the diaphragms that alternately pumps fluid into and out of the housing.