(under subclass 321) Apparatus in which the motor has a rotating working member and at least a portion of the pump or pump part (e.g., stator, runner, etc.) is situated interiorly of the axial and radial limits of said working member.
(1) Note. For purposes of the definition, a mere drive shaft which connects the motor working member to the pumping member is not considered to be a portion of the motor.
(2) Note. The pump or pump part situated within the motor working member is, in many instances, an integral or monolithic portion of the motor working member.
(3) 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.
