.~.~ Means to simultaneously open working chambers to inlet or exhaust
DEFINITION
Classification: 91/464
(under subclass 462) Apparatus in which valve means are provided for concurrently opening the opposed working chambers of the double acting motor to either inlet or exhaust.
(1) Note. Mere independently operated valves for opposed working chambers without some operating means to assure that the opposed chambers are simultaneously opened when desired are not included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for double acting expansible chamber motors with receiving orifices for the opposed working chamber to receive all or a portion of a jet stream to cause movement of the working member.
439, for double acting expansible chamber motors with an independently controlled by-pass between opposed working chambers which by-passes through the common pressure inlet line to the motor.
