.~ Including speed-related frequency generator {5}
167
.~.~ Including rotating magnetic field actuated indicator
DEFINITION
Classification: 324/167
(under subclass 166) Subject matter including electro-magnetic, indicator driving means energized by the speed signal to produce a rotating magnetic field whose rotation is synchronized with the frequency of the speed signal.
(1) Note. The rotating magnetic field may drive freely rotating armature or a restrained armature either of which is, in turn, connected to some means to indicate the speed of the rotating field and, thus, the object whose speed is being measured.
