| http://www.w3.org/ns/prov#value | - According to the present invention therefor, there is provided a cam drive mechanism for driving a camshaft of a 4-stroke internal combustion engine, the engine comprising one or more sets of n cylinders, wherein n is a positive integer, a piston connected to a crankshaft and reciprocable in each cylinder and being either in phase or out of phase with any other piston in the set to which it belong
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