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IPC 7
F15-F15B02114

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL


F 15 BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR (motors, turbines, compressors, blowers, pumps F01 to F04; fluid dynamics F15D; fluid clutches or brakes F16D; fluid springs F16F; fluid gearing F16H; pistons, cylinders, packing F16J; valves, taps, cocks, actuating-floats F16K; safety valves with auxiliary fluid operation of the main valve F16K 17/10; fluid-operating means for valves F16K 31/12; pipes, pipe joints F16L; lubricating F16N)


Note

 In this subclass, the following terms are used with the meanings indicated:

 "telemotor" means a system or device in which a substantially constant amount of fluid is trapped between an input member and an output member to act as a fluid link;

 "servomotor" means a fluid-pressure actuator, e.g. a piston and cylinder, directly controlled by a valve or other device which is responsive to operation of an initial controlling member; "Servomotor" does not cover a telemotor. The initial controlling member may be adjacent to the servomotor or at a distance, and may be, for example, a hand lever.


Subclass Index

SUPPLYING FLUID UNDER PRESSURE 

F15B 1/00 

INTENSIFIERS OR FLUID-PRESSURE CONVERTERS; TRANSDUCERS 

F15B 3/00; F15B 5/00 

FLUID-PRESSURE ACTUATOR SYSTEMS 

Telemotors or systems related to the output of a pump 

F15B 7/00 

Servomotors 

F15B 9/00, F15B 11/00, F15B 13/00 

Devices for displacing a member 

F15B 15/00 

Combinations of telemotors and servomotors; other systems; details 

F15B 17/00; F15B 18/00; F15B 21/00 

TESTING; SAFETY 

F15B 19/00; F15B 20/00 



1/

00Installations or systems with accumulators; Supply reservoir or sump assemblies

1/

02.Installations or systems with accumulators (devices damping pulsations or vibrations in fluids for use in, or in connection with, pipes or pipe systems F16L 55/04)

1/

027..having accumulator charging devices (control of fluid pressure in general G05D 16/00)  [6]

1/

033...with electrical control means  [6]

1/

04..Accumulators (connection of valves to inflatable elastic bodies B60C 29/00)

1/

08...using a gas cushion; Gas charging devices; Indicators or floats therefor  [6]

1/

10....with flexible separating means  [6]

1/

12.....attached at their periphery (F15B 1/16 takes precedence)  [6]

1/

14......by means of a rigid annular supporting member  [6]

1/

16.....in the form of a tube  [6]

1/

18.....Anti-extrusion means  [6]

1/

20......fixed to the separating means  [6]

1/

22....Liquid port constructions  [6]

1/

24....with rigid separating means, e.g. pistons  [6]

1/

26.Supply reservoir or sump assemblies  [6]


3/

00Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids


5/

00Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities (F15B 9/00 takes precedence; for measuring or controlling G01, G05)


Fluid-pressure actuator systems (systems peculiar to the control of a particular machine or apparatus covered in a single other class, see the class for such machine or apparatus)

Notes

(1)This guide heading relates to the moving of members into one or more definite positions by means of fluid pressure.

(2)Pump, motor, and control features so far as not peculiar to this purpose are classified in the relevant classes.


7/

00Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors

7/

02.Systems with continuously-operating input and output apparatus

7/

04.in which the ratio between pump stroke and motor stroke varies with the resistance against the motor (in brake-actuating systems for motor vehicles B60T)

7/

06.Details (F15B 15/00 takes precedence)

7/

08..Input units; Master units

7/

10..Compensation of the liquid content in a system (F15B 7/08 takes precedence; pressure-maintaining arrangements for brake master cylinders B60T 11/228)  [5]


9/

00Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member

9/

02.with servomotors of the reciprocatable or oscillatable type

9/

03..with electrical control means

9/

04..controlled by varying the output of a pump with variable capacity

9/

06..controlled by means using a fluid jet

9/

07...with electrical control means

9/

08..controlled by valves affecting the fluid feed or the fluid outlet of the servomotor (F15B 9/06 takes precedence)

9/

09...with electrical control means

9/

10...in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

9/

12...in which both the controlling element and the servomotor control the same member influencing a fluid passage and are connected to that member by means of a differential gearing

9/

14.with rotary servomotors

9/

16.Systems essentially having two or more interacting servomotors

9/

17..with electrical control means


11/

00Servomotor systems without provision for follow-up action (F15B 3/00 takes precedence)

11/

02.Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member

11/

024..by means of differential connection of the servomotor lines, e.g. regenerative circuits  [6]

11/

028..for controlling the actuating force (F15B 11/024 takes precedence)  [6]

11/

032...by means of fluid-pressure converters (fluid-pressure converters per se F15B 3/00)  [6]

11/

036...by means of servomotors having a plurality of working chambers (servomotors per se F15B 15/00)  [6]

11/

04..for controlling the speed (F15B 11/024 takes precedence)  [6]

11/

042...by regulating means in feed line (F15B 11/046, F15B 11/05 take precedence)  [6]

11/

044...by regulating means in return line (F15B 11/046, F15B 11/05 take precedence)  [6]

11/

046...depending on the position of the working member  [6]

11/

048....with deceleration control  [6]

11/

05...specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive

11/

06.involving features specific to the use of a compressible medium, e.g. air, steam

11/

064..with devices for saving the compressible medium  [6]

11/

068..with valves for gradually putting pneumatic systems under pressure  [6]

11/

072..Combined pneumatic-hydraulic systems  [6]

11/

076...with pneumatic drive or displacement and speed control or stopping by hydraulic braking  [6]

11/

08.with only one servomotor

11/

10..in which the servomotor position is a function of the pressure

11/

12..providing distinct intermediate positions; with step-by-step action

11/

13...using chambers of predetermined volume  [6]

11/

15..with special provision for automatic return

11/

16.with two or more servomotors

11/

17..using two or more pumps  [6]

11/

18..used in combination for obtaining stepwise operation of a single controlled member

11/

20..controlling several interacting or sequentially-operating members (fluid distribution or supply devices for the control of two or more servomotors F15B 13/06)

11/

22..Synchronisation of the movement of two or more servomotors


13/

00Details of servomotor systems (F15B 15/00 takes precedence)

13/

01.Locking-valves or other detent devices (associated with the actuator F15B 15/26)

13/

02.Fluid distribution or supply devices characterised by their adaptation to the control of servomotors (multiple-way valves F16K 11/00)

13/

04..for use with a single servomotor

13/

042...operated by fluid pressure

13/

043....with electrically-controlled pilot valves

13/

044...operated by electrically-controlled means, e.g. solenoids, torque-motors

13/

06..for use with two or more servomotors

13/

07...in distinct sequence

13/

08...Assemblies of units, each for the control of a single servomotor only

13/

10.Special arrangements for operating the actuated device without using fluid pressure, e.g. for emergency use

13/

12.Special measures for increasing the sensitivity of the system

13/

14.Special measures for giving the operator by sense of touch the immediate response of the actuated device

13/

16.Special measures for feedback


15/

00Fluid-actuated devices for displacing a member from one position to another (motors for continuous movement F01 to F03); Gearing associated therewith

15/

02.Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member

15/

04..with oscillating cylinder

15/

06..for mechanically converting rectilinear movement into non-rectilinear movement

15/

08.characterised by the construction of the motor unit (pistons, cylinders, packing F16J)

15/

10..the motor being of diaphragm type (connection of valves to inflatable elastic bodies B60C 29/00; diaphragms, bellows F16J 3/00)

15/

12..of the oscillating-vane or curved-cylinder type

15/

14..of the straight-cylinder type

15/

16...of the telescopic type

15/

17...of differential-piston type

15/

18.Combined units comprising both motor and pump

15/

19.Pyrotechnical actuators  [3]

15/

20.Other details

15/

22..for accelerating or decelerating the stroke

15/

24..for restricting the stroke

15/

26..Locking mechanisms

15/

28..Means for indicating the position, e.g. end of stroke  [4]


17/

00Combinations of telemotor and servomotor systems

17/

02.in which a telemotor operates the control member of a servomotor


18/

00Parallel arrangements of independent servomotor systems


19/

00Testing fluid-pressure systems or apparatus, so far as not provided for elsewhere


20/

00Safety arrangements; Applications of safety devices (safety devices in general F16P); Emergency measures


21/

00Common features; Fluid-pressure systems, or details thereof, not covered by any preceding group

21/

02.Servomotor systems with programme control derived from a store or timing device; Control devices therefor

21/

04.Special measures taken in connection with the properties of the fluid, e.g. for venting, compensating for changes of viscosity, cooling, filtering, preventing churning

21/

06.Use of special fluids, e.g. liquid metal; Special adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids

21/

08.Servomotor systems incorporating electrically- operated control means (F15B 21/02 takes precedence)

21/

10.Delay devices or arrangements (associated with fluid motors or actuators F15B 15/22)

21/

12.Fluid oscillators or pulse generators (fluid oscillators predominantly used for computing or control purposes F15C 1/22, F15C 3/16)

21/

14.Energy-recuperation means (for vehicles B60T 1/10)  [6]


  
 

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