.~ Valve parts continuously relatively moved for nonvalving function
DEFINITION
Classification: 91/430
(under subclass 418) Apparatus in which the valve means has parts which are relatively movable for a nonvalving function and means are provided to cause the parts to be moved continuously.
(1) Note. The valve parts are usually moved for the purpose of reducing static friction in the valve so that the parts may be easily moved by other means to perform a valving function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
429+, for expansible chamber motors with a dither valve which controls the motive fluid to supply a series of impulses rather than a steady flow to the motor.
