(under subclass 47) Control systems wherein the driven means is operable to vary the extent of opening of the valve or valves in response to changes in speed and to effect closing of the valve or valves in response to a speed above a predetermined speed.
(1) Note. The driven means may comprise one or more governors which may control a single valve or a plurality of valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57, for excess speed responsive valve control of the centrifugal mass type, and see the search notes thereto.
