US PATENT SUBCLASS 417 / 321
MOTOR DRIVEN

Current as of: June, 1999
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417 /   HD   PUMPS

321MOTOR DRIVEN {32}
322  DF  .~> Magnetostrictive chamber
323  DF  .~> Pump motor or starter driven by pump fluid
324  DF  .~> Pump operated as motor to start prime mover drive
325  DF  .~> Reversely rotated for starting
326  DF  .~> Including means for selectively varying motor speed or rotary motor direction
327  DF  .~> Reaction motor
328  DF  .~> Spring or weight motor {1}
330  DF  .~> Tide or wave motor {1}
334  DF  .~> Fluid current motor {2}
337  DF  .~> Buoyant motor
338  DF  .~> Relatively movable pumping members driven by relatively movable working members {1}
348  DF  .~> Common rotary pumping and fluid motor working member
349  DF  .~> Common pump and motor chamber
350  DF  .~> Motor rotor intermediate coaxial pump rotors
351  DF  .~> Pump rotor intermediate coaxial motor rotors
352  DF  .~> Motor within rotary pumping member {1}
355  DF  .~> Pump within rotary working member {1}
357  DF  .~> Pump fluid communicates with sealed chamber containing armature
358  DF  .~> Pump - motor unit raised in vertical conduit by pressure fluid applied below unit
359  DF  .~> Adjustable motor and pump rotor unit or relatively adjustable aligned pump and motor rotary shafts
360  DF  .~> Including means for facilitating assembly or disassembly of pump to or from motor or fixed support
361  DF  .~> Pump and motor unitarily adjustable relative to fixed support
362  DF  .~> Pump and motor interconnected by endless flexible transmission element
363  DF  .~> Resiliently mounted pump or motor
364  DF  .~> Internal-combustion engine
365  DF  .~> Axial thrust balancing means for rotary pump and motor
366  DF  .~> Including means utilizing pump fluid for augmenting cooling, lubricating, sealing, or cleaning of motor {4}
372  DF  .~> Interrelated or common lubricating or cooling means for pump and motor
373  DF  .~> With means to prevent heat transfer between pump and motor
374  DF  .~> Including manual, mechanical, or diverse drive
375  DF  .~> Fluid motor {9}
410.1  DF  .~> Electric or magnetic motor {10}

DEFINITION

Classification: 417/321

(under the class definition) Apparatus in which the pump is driven by a significantly claimed motor.

(1) Note. This definition excludes motor driven pumps in which the pump is a mere accessory of or ancillary to the operation of the motor and such ancillary function is reflected in the claims. For example, an engine driving a cooling water pump with no claimed connection of the pump to the engine would be included under this definition, but if a claim recites the connection of the cooling water pump to the engine this would be excluded. Such a combination would be classifiable in the appropriate motor class.

(2) Note. In order for a patent to be classified under this definition there must be a significant recitation of both the

motor and the pump. A specifically claimed pump driven by a nominally claimed motor is classified in appropriate other subclasses of this class or other appropriate classes which include pumps (e.g., Class 415, Rotary Kinetic Fluid Motors or Pumps; Class 418, Rotary Expansible Chamber Devices, etc.). Likewise, a specifically claimed motor driving a nominally claimed pump is classified in the appropriate class providing for such motor (e.g., Class 91, Class 415, Class 418, etc.). Enumerated below are a number of examples for both pump and motor as to what is considered significant recitation and that which is not significant recitation.

A. Motor Recitation

(1) Significant motor inclusion: (a) A motor having any structural detail thereof recited, e.g., piston, rotor, runner, armature, etc., or designation of a turbine as to type, e.g., axial flow, two-stage, etc.; (b) Recital of details of motor crankcase structure, housing, base, or support for the motor. (c) Recital of structure ancillary to the motor, e.g., fluid or electrical control circuit or power generating apparatus, cooling or lubricating structure, etc.

(2) Insignificant motor inclusion: (a) Means for driving or drive means. (b) A motor specified as to some extremely common type, e.g., rotary, reciprocating, electric, fluid, expansible chamber, turbine, internal combustion engine, etc., or any combination of said types.

B. Pump Recitation

(1)

Significant pump inclusion: (a) A pump having any structural detail thereof recited, e.g., piston, gear, screw, rotor or impeller within a recited casing, etc., or designation of rotary nonexpansible chamber as to type, e.g., axial flow, centrifugal, two-stage, etc.; (b) Recital of structure ancillary to the pump, e.g., cooling or lubricating structure for the pump. (c) Recital of details of pump crankcase, structure, housing, base or support for the pump.

(2)

Insignificant pump inclusion: (a) A pump specified by name or extremely common type, e.g., pump or pump means, blower, fan, compressor, rotary, reciprocating, expansible chamber, liquid, etc., or any combination of said types.

C. Pump and Motor Support or Spatial Relationship: (1) The following motor-pump relationships are considered significant for purposes of classification herein, even though neither pump nor motor is specifically recited. (a) The claiming of a spatial relationship between the pump and motor or common support therefor, e.g., motor mounted on the pump, pump

mounted on the motor, a common base, support, or housing for the pump and motor. (b) The claiming of means for permitting or preventing heat transfer between the pump and motor or pump and motive fluids. (c) The claiming of means common to the pump and motor for cooling or lubricating same.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, for motor driven pumps with condition responsive control of the pump drive motor.

91, for diverse pumps in which one is fluid motor driven and the other is of the aerated column type, the motor exhaust comprising the aeration fluid.

245, for successive stage pumps in which one stage has a motor driven by fluid supplied from another stage. 271, for motor driven pumps in which the pump has three or more cylinders arranged in parallel, radial or conical relationships with a rotary transmission axis.

SEE OR SEARCH CLASS

60, Power Plants,

533+, for a motor driven expansible chamber device disclosed solely as the master in a pulsator system,

92, Expansible Chamber Devices, for non-rotary expansible chamber devices disclosed as being of the pump or motor type. Class 417 will take a motor-type expansible chamber device driving a pump-type expansible chamber device if a claim recites one as a motor and one as a pump. Class 92 takes plural expansible chamber devices including those in which one is of the motor type driving another of the pump type if no claim recites that one is a motor and the other a pump.