.~ Centrifugal mass type (exclusive of liquid) {5}
55
.~.~ Periodically actuated valve
DEFINITION
Classification: 137/55
(under subclass 53) Control systems wherein the valves or valve are periodically and continually opened and closed, the governor being effective to vary the period and/or the extent of opening.
(1) Note. The valves are usually disclosed for use in a reciprocating type of expansible chamber motor, the valves being periodically actuated for admitting motive fluid to the power cylinder and the governor varies the quantity of motive fluid in accordance with the motor speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
631+, for nonautomatic cyclically operated valves, and see the search notes to subclass 631.
