(under subclass 102) Systems which include two outlets or receivers, one outlet or receiver being connected to the supply while the other is connected to the exhaust, the connections being reversed or changed in response to a means sensing a change in condition.
(1) Note. Many of the patents classified in this subclass are drawn to distributor valves for plural expansible chamber motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625+, for multiway valve units and their actuators, and see the search notes to subclass 625.
