US PATENT SUBCLASS 60 / 325
PRESSURE FLUID SOURCE AND MOTOR

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325PRESSURE FLUID SOURCE AND MOTOR {47}
532  DF  .~> Shock or resonant wave type of energy transmission
533  DF  .~> Pulsator {25}
326  DF  .~> Utilizing a mixture, suspension, semisolid or electro-conductive liquid as motive fluid
327  DF  .~> Methods of operation
328  DF  .~> Having a signal, indicator or inspection means
329  DF  .~> Condition responsive control means responsive to, or compensating for, motive fluid compressibility, temperature variation or viscosity variation driven master
330  DF  .~> Coaxial impeller and turbine unit {11}
368  DF  .~> Control by independently operated punch card, tape, digital computer, counter, template, or programmer cyclic control
369  DF  .~> Cyclically operable reciprocating or oscillating motor or output stroke device {11}
384  DF  .~> Expansible chamber type volumetric responsive measuring device in series with or driven by output motor operates the motor controller
385  DF  .~> Manual pump pressurizes fluid to position output motor motive fluid control valve {1}
387  DF  .~> Distinct structure metering and dispensing a stroke length determining volume of motive fluid to the motor
388  DF  .~> Full range correspondence of position of external manipulator and motor positioned member effected by feedback linkage {4}
393  DF  .~> Manipulator for motive fluid control valve having load feel or motor pressure feedback
394  DF  .~> Having apparatus control by timer or delay means
395  DF  .~> Control relative to independently driven oscillator, speed standard or pacer device
396  DF  .~> Utilizing lubricant, starter motor, cooling fluid, or fluid used for combustion in an internal combustion engine {1}
398  DF  .~> Utilizing natural energy or having a geographic feature
399  DF  .~> Unsafeness, unreadiness or disarray prevent manual change or operative state
400  DF  .~> Selective or simultaneous power and manual energy inputs {2}
403  DF  .~> Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure {3}
407  DF  .~> Pneumatic motor with gas supply or removal device {3}
413  DF  .~> With control means for structure storing work driving energy (e.g., accumulator, etc.) {5}
419  DF  .~> Motor driven by motive fluid of system drives pump pressurizing motive fluid of system
420  DF  .~> Having condition responsive control in a system of distinct or separately operable outputs or output drive units {7}
428  DF  .~> Having condition responsive control in a system of separately operable power input pumps, pump motors, pump cylinders or pressure fluid sources {2}
431  DF  .~> Condition responsive control of or by input to input pump drive means {1}
433  DF  .~> Having correlated or joint actuation of controller of input to motive fluid pressurizer and of controller of motive fluid floow {1}
435  DF  .~> Having a mechanical clutch or brake device in the power train {5}
443  DF  .~> Servo-motor having externally operated control valve sets motor or pump displacement {1}
445  DF  .~> Condition responsive control of pump or motor displacement {7}
453  DF  .~> With means purging, cleaning or separating undesirables from motive fluid {1}
455  DF  .~> Having leakage collecting structure
456  DF  .~> Having distinct cooling or lubricating structure
457  DF  .~> Collapsible joined device having fluid trapping valve in joint
458  DF  .~> Having assembly or repair structure
459  DF  .~> Condition responsive control of motive fluid flow {8}
469  DF  .~> Having means controlling or attenuating shock vibration, sticking or chattering
470  DF  .~> Externally operated multiway valve or interconnected control elements control motive fluid for a limited stroke to-and-fro device {2}
473  DF  .~> Pump means moves motive fluid from one chamber to an opposite chamber of opposed expansible chambers having a common output {3}
477  DF  .~> Ram driven by fluid pumped from reservoir {4}
483  DF  .~> Having selecting means distributing motive fluid between plural motors or cylinders rotatating a common output shaft
484  DF  .~> Having plural energy outputs (e.g., plural motors, etc.) {1}
486  DF  .~> Having plural energy input means, pumps or diverse pump outlets
487  DF  .~> Input pump and rotary output motor system having displacement varying type of direction or speed selector {3}
493  DF  .~> Valve means reverses flow from pump to reversible rotary motor
494  DF  .~> Including by-pass or restrictor controlling flow circuit

DEFINITION

Classification: 60/325

(under the class definition) Apparatus having a means or source capable of flowing or pressurizing a liquid or gaseous motive fluid, and motor means responsive to the pressure of the flow or of the fluid to convert such pressure or flow to useful mechanical work, said motive fluid being capable of transmitting energy from said source to said motor.

(1) Note. See Glossary at the end of this subclass definition.

(2) Note. Except as noted below, this and indented subclasses include those pump-motor combinations in which the pump creates a pressurized motive fluid to be transmitted to the motor to output useful work because of the pressure differential of the working fluid between the fluid inlet to and outlet from the motor.

(3) Note. Expansible chamber motors having a nominal pressure source and an exhaust treating means are classified in Class 60 subclasses 654, 681, and 685+, dealing with motors combined with exhaust treating means, on the theory that the device would be classified in Class 91, Motors: Expansible Chamber Type, or some other motor class, except for the claimed exhaust treatment feature and would not be classified on the grounds of a motor with a nominal pump

combination.

(4) Note. The combination of an internal combustion engine and means to induce or create flow of exhaust gases or to treat exhaust gases from the combustion chamber of the internal combustion engine is not considered to define a motor having a working member actuated by motive fluid. Such a combination is regarded rather as directed to exhaust treatment classified in subclasses 272+.

(5) Note. A fluid motor in which the exhaust thereof passes through a heat exchanger or condenser arranged to induce additional flow in the motive fluid is excluded from this subclass and will be found under subclasses 685+, exhaust treatment. (6) Note. This and indented subclasses include patents claiming motive fluid pressurizing means combined with means to convert the pressurized motive fluid to useful work.

Output Transmission. In general gearing or linkage may be included as part of the power output means or transmission of the claimed motor means. However, when the transmission includes some part which does not always partake of a given motion in accordance with the motion of the motor working member, such as a selectively engageable clutch, this no longer constitutes subject matter for this class. See Class 74, Machine Element or Mechanism Class 188, Brakes, Class 192, Clutches and Power Stop Control, 475, Planetary Gear Transmission Systems or Components.

Motive Fluid Source

(1)

Pumps

The inclusion in a claim of a pump broadly which provides motive fluid for utilization by fluid motor does not preclude classification in a fluid motor class (See the Search Class notes below.).

The following examples of terminology have been considered to be nominal inclusion of a pump and if so claimed would not preclude classification in a fluid motor class: (a) a pump, (b) a rotary pump, (c) a motor driven pump, (d) a motor driven rotary pump, (e) an internal combustion engine having an intake manifold (as a source of vacuum); (f) a plurality of pumps arranged in parallel; (g) a circuit comprising a pump, pumps, and motor.

The following examples have been considered to be significant inclusion of a pump and if so claimed would cause classification in Class 60 if otherwise appropriate: (a) a pump which is characterized as to type, e.g., centrifugal, eduction, constant displacement, variable displacement, pulsator, etc., (however, see (b) in preceding paragraph) (b)

a motor driven pump in which the motor is characterized as to type e.g., turbine, electric motor, internal combustion engine (however, see (e) in preceding paragraph),(c) a pump which has any detail thereof recited as, for example a "piston," (d) a plurality of pumps in series, (e) a particular physical relation between a nominal pump, and (1) a motor supplied thereby, or (2) with a pump, reservoir or tank forming part of the circuit supplying the pump. For example, this particular physical relation may include their relation in space or mechanical interconnection means.

Accumulators A motor having its working chamber in constant communication with an accumulator for pressurized motive fluid is not precluded from a motor class regardless of the specificity with which the accumulator is recited, the accumulator in this case being considered to be merely a part of the expansible chamber.

However, unless the accumulator is claimed so broadly as to amount to a mere conduit, these subclasses of Class 60 take an accumulator combined with a fluid motor in which a control valve is interposed between the accumulator and the motor, if otherwise appropriate.

Also Class 91 subclass 5 takes an expansible chamber type motor having as a part thereof a storage chamber that holds only a sufficient quantity of motive fluid for one stroke and that must be recharged for each succeeding stroke. (7) Note. When the pump-motor combination is claimed so broadly so that the recitations applicable to either the pump or the motor can not form the basis for classification in a pump or a motor class, then classification is in this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39.01+, for fluid pressure generator-motor combinations wherein the fluid pressure generator is a means for bringing together fluids from different sources or of different qualities and using them in a motor. The motor may be a turbine or an expansible chamber type. (See (7) Note.)

39.01+, for a system in which a combination device is a pressure fluid source feeding combustion products to the motor. (See (5) Note.)

595, for a system in which a free piston type of internal combustion engine is a pressure fluid source for a motor. (See (5) Note.)

597+, for a system in which an internal combustion engine is a pressure fluid source for a motor. (See (5) Note.)

597+, for fluid pressure generator-motor combinations wherein the exhaust from an internal combustion engine means is in fact the motive fluid which is convertible to useful work by the motor means which may be a turbine or an expansible

chamber type motor. (See (7) Note.)

643+, for a system in which indirectly applied heat energize motive fluid for a motor. (See (5) Note.)

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type.

92, Expansible Chamber Devices. 415, Rotary Kinetic Fluid Motors or Pumps.

416, Fluid Reaction Surfaces.

418, Rotary Expansible Chamber Devices.

MOTIVE FLUID

Includes expansible or nonexpansible fluids, entrained in a system including a pump and motor, or fluents whose characteristics permit a transmission of energy or flow between a pump and motor which is not inconsistent with that of the fluents.

MOTIVE FLUID RESPONSIVE MEANS

Comprises means actuated by the flow or pressure of the fluid or by the absence of such flow or pressure between the pump and the motor.

WORKING MEMBER POSITION RESPONSIVE MEANS

Comprises means positively actuated by the motor working member when it attains a given predetermined position in the working chamber. Such position includes a position of the working member attained after a predetermined number of strokes or revolutions of the working member.

A VARIABLE DISPLACEMENT PUMP OR MOTOR

Includes an expansible chamber and means to vary the volume of fluid admitted to or discharged from the chamber. The means which varies the volume of fluid will be generally either (1) means which physically displaces either the piston or working member or the cylinder or housing of the expansible chamber to vary the effective stroke of the piston or working member, or (2) means which alters the timing of the inlet or exhaust valve with respect to the piston or working member timing to vary the effective stroke of the piston or working member.