(under subclass 321) Apparatus in which the pump has a rotating pumping member and at least a portion of the motor or motor part (e.g., armature, runner, stator) is situated interiorly of the axial and radial limits of said pumping member.
(1) Note. For purposes of this 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 motor or motor part situated within the pumping member is, in many instances, an integral or monolithic portion of the pumping member.
(3) Note. The 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.
