(under subclass 321) Apparatus in which the motor has a working member which is drivingly connected to and located between opposite plural pumping members, said motor working member and said plural pumping members having a rotary motion of more than 360 deg. in a single direction about a single common axis.
(1) Note. A rotary fluid motor under this definition may be of the rotary expansible chamber type as provided for in Class 418, Rotary Expansible Chamber Devices, or of the kinetic type as provided for in Class 415, Rotary Kinetic Fluid Motors or Pumps.
