.~ Centrifugal mass type (exclusive of liquid) {5}
57
.~.~ Excess speed responsive
DEFINITION
Classification: 137/57
(under subclass 53) Control systems wherein the speed responsive means is effective to actuate the valve or valves only at speeds above a predetermined speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50, for speed change and excess speed valve control.
456+, for safety cut-offs of general utility which respond to line condition and require resetting.
SEE OR SEARCH CLASS
116, Signals and Indicators,
57, and 62.1+ for vehicle speed limit indicators and alarms.
