Control by sensed ambient condition, pattern indicia, or external signal:
(under subclass 34) Subject matter wherein means are provided to sense (1) a condition or change in condition of the atmosphere surrounding the engine or gear transmission* or (2) the presence or absence of indicative means on a prescribed record or (3) a signal from a source not physically connected to the engine*, gear transmission* or load* or (4) the heat level of a part of the engine or gear transmission*; and, in response to the sensing, regulate the operation of the engine* or gear transmission*.
