US PATENT SUBCLASS 137 / 57
.~.~ Excess speed responsive


Current as of: June, 1999
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137 /   HD   FLUID HANDLING

47  DF  SPEED RESPONSIVE VALVE CONTROL {5}
53  DF  .~ 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.