.~ Plural motor surfaces on flow regulator (e.g., opposed)
DEFINITION
Classification: 239/94
(under subclass 93) Apparatus which includes a first area or surface of the distributor flow control means subjected to fluid pressure from the pump and an additional surface on said flow control means subjected to a separately controlled fluid to oppose or assist the force exerted on the first surface (e.g., to delay or assist valve opening or to close the valve at a desired time).
(1) Note. The additional motor surface on the valve may be actuated by fluid from the pump, controlled by a separate valving means or by any other pressurized fluid desired.
