Abstract: An internal reciprocating engine effective to operate at one engine cycle per revolution is provided with a differential stroke piston having an inner piston part, for sealing the cylinder, operating at a cycle different from its corresponding outer piston part, for transmitting power to and from the engine shaft, and a differential stroke actuating means for operating the inner and outer piston parts in the same and the opposite directions within the cylinder and to provide differential stroke periods and/or stroke lengths for the inner piston part cycle.

Abstract: The expression of characters in Chinese, Japanese or Korean languages in a directly readable code suitable for input through a small keyboard into an information processor. Output is in the input code or the equivalent conventional ideographic characters. The code uses arrangements of pronunciation signs and determinative signs in an order derived from the conventional stroke orders of the respective characters. The determinative signs are derived from a selected group of conventional radicals and are used to differentiate among homonymic characters.