(under subclass 178) Subject matter in which the means responsive to the passage of an object includes an electrical switch actuated directly by the object.
(1) Note. The switch of this subclass may be frangible.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers, appropriate subclasses for switches or particular structure or type, particularly
47, for limit switches adapted to be actuated by the motion of a machine part, and subclass 61.41, for stationary switch structure having an actuator responsive to the passage of a transient object
