(under subclass 213) Subject matter wherein two or more motions involving different mechanical movements cause operation of the valve.
(1) Note. The plural dissimilar mechanical movements may comprise a single actuating means, or a plurality of independent or interconnected actuating means.
(2) Note. The use of a flexible member, such as a cable, chain or rope, attached to a valve operating mechanical movement is not considered to comprise two mechanical movements for classification herein. Such mechanisms are classified in the appropriate following mechanical movement subclasses and cross-referenced as required in subclass 294.
SEE OR SEARCH THIS CLASS, SUBCLASS:
294, for devices in which a flexible member, such as a cable, chain or rope is attached to an arm which is connected directly to the valve or valve stem. See (2) Note.
SEE OR SEARCH CLASS
137, Fluid Handling, 446, for float arm actuated valves having an interposed cam, gear or screw mechanical movement.
