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IPC 7
 
F04-F04B01924
  F04B 23/00 - F04B 53/22  

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


F 04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS (portable fire extinguishers with manually-operated pumps A62C 11/00, with power-driven pumps A62C 25/00; charging or scavenging combustion engines by pumps F02B; engine fuel-injection pumps F02M; ion pumps H01J 41/12; electrodynamic pumps H02K 44/02)


F 04 BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F; crankshafts, crossheads, connecting-rods F16C; flywheels F16F; gearings for interconverting rotary motion and reciprocating motion in general F16H; pistons, piston-rods, cylinders, in general F16J)


Notes

(1)In this subclass, the following term is used with the meaning indicated:

 "piston" also covers a plunger.

(2)Attention is drawn to the Notes following the titles of class B81 and subclass B81B relating to "micro-structural devices" and "micro-structural systems". [7]

(3)Attention is drawn to the Notes preceding class F01, especially as regards the definitions of "machines", "pumps", and "positive-displacement".


Subclass Index

POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS, PUMPS IN GENERAL 

General characteristics of machines and pumps 

multiple cylinders; single cylinders, pistons coacting in cylinder; differential-surface pistons; flexible working members 

F04B 1/00; F04B 3/00; F04B 5/00; F04B 43/00 

positively-driven distribution members; driving or driven means to or from working members 

F04B 7/00; F04B 9/00 

equalization of pulses, counteracting cavitation 

F04B 11/00 

other characteristics 

F04B 19/00 

Characteristics peculiar to pumps, their adaptations or combinations 

delivering measured quantities; handling specific fluids; pumping from great depths 

F04B 13/00; F04B 15/00; F04B 47/00 

associated with specific driving engines 

F04B 17/00 

Other characteristics 

F04B 19/00 

Pumping installations or systems 

F04B 23/00, F04B 43/00, F04B 47/00 

Component parts, details or accessories 

F04B 53/00 

PUMPS FOR ELASTIC FLUIDS 

General characteristics 

multiple stages; multiple cylinders 

F04B 25/00; F04B 27/00 

free piston; flexible working member; actuation by muscle power 

F04B 31/00; F04B 45/00; F04B 33/00 

driving means 

F04B 35/00 

For pumping from great depths 

F04B 47/00 

Other characteristics; other details or accessories 

F04B 37/00; F04B 39/00 

Pumping installations or systems 

F04B 41/00, F04B 45/00, F04B 47/00 

CONTROL, SAFETY MEASURES; TESTING 

F04B 49/00; F04B 51/00 

COMPONENT PARTS, DETAILS OR ACCESSORIES 

F04B 53/00 



Pumps for liquids or for liquid and elastic fluids; Positive-displacement machines for liquids (having flexible working members F04B 43/00; pumps for raising fluids from great depths F04B 47/00)


1/

00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (F04B 3/00 takes precedence; fluid-driven pumps F04B 9/08; control of reciprocating machines or pumps in general F04B 49/00)

1/

02.having two cylinders (in V-arrangement F04B 1/04)

1/

04.having cylinders in star- or fan-arrangement  [6]

1/

047..with an actuating or actuated element at the outer ends of the cylinders  [6]

1/

053..with an actuating or actuated element at the inner ends of the cylinders  [6]

1/

06..Control

1/

07...by varying the relative eccentricity between two members, e.g. a cam and a drive shaft  [6]

1/

08...regulated by delivery pressure

1/

10..the cylinders being movable, e.g. rotary  [6]

1/

107...with an actuating or actuated element at the outer ends of the cylinders  [6]

1/

113...with an actuating or actuated element at the inner ends of the cylinders  [6]

1/

12.having cylinder axes coaxial with, or parallel or inclined to, main shaft axis

1/

14..having stationary cylinders

1/

16...having two or more sets of cylinders or pistons

1/

18...having self-acting distribution members, i.e. actuated by working fluid

1/

20..having rotary cylinder block

1/

22...having two or more sets of cylinders or pistons

1/

24....inclined to main shaft axis

1/

26..Control

1/

28...for machines or pumps with stationary cylinders

1/

29....by varying the relative positions of a swash plate and a cylinder block  [6]

1/

30...for machines or pumps with rotary cylinder block

1/

32....by varying the relative positions of a swash plate and a cylinder block  [6]

1/

34.Control not provided for in a single group of groups F04B 1/02 to F04B 1/32  [6]


3/

00Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage


5/

00Machines or pumps with differential-surface pistons

5/

02.with double-acting pistons  [6]


7/

00Piston machines or pumps characterised by having positively-driven valving (with cylinders in star- or fan-arrangement F04B 1/04; with cylinder axes coaxial with, or parallel or inclined to, main shaft axis F04B 1/12)

7/

02.the valving being fluid-actuated

7/

04.in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports  [3]

7/

06..the pistons and cylinders being relatively reciprocated and rotated  [3]


9/

00Piston machines or pumps characterised by the driving or driven means to or from their working members

9/

02.the means being mechanical

9/

04..the means being cams, eccentrics, or pin-and-slot mechanisms (with cylinder axes coaxial with, or parallel or inclined to, main shaft axis F04B 1/12)

9/

06..the means including spring- or weight-loaded lost-motion devices

9/

08.the means being fluid

9/

10..the fluid being liquid

9/

103...having only one pumping chamber  [6]

9/

105....reciprocating movement of the pumping member being obtained by a double-acting liquid motor  [6]

9/

107....rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring  [6]

9/

109...having plural pumping chambers  [6]

9/

111....with two mechanically connected pumping members  [6]

9/

113.....reciprocating movement of the pumping members being obtained by a double-acting liquid motor  [6]

9/

115.....reciprocating movement of the pumping members being obtained by two single-acting liquid motors, each acting in one direction  [6]

9/

117....the pumping members not being mechanically connected to each other  [6]

9/

12..the fluid being elastic, e.g. steam or air

9/

123...having only one pumping chamber  [6]

9/

125....reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor  [6]

9/

127....rectilinear movement of the pumping member in the working direction being obtained by a single-acting elastic-fluid motor, e.g. actuated in the other direction by gravity or a spring  [6]

9/

129...having plural pumping chambers  [6]

9/

131....with two mechanically connected pumping members  [6]

9/

133.....reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor  [6]

9/

135.....reciprocating movement of the pumping members being obtained by two single-acting elastic-fluid motors, each acting in one direction  [6]

9/

137....the pumping members not being mechanically connected to each other  [6]

9/

14.Pumps characterised by muscle-power operation


11/

00Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation


13/

00Pumps specially modified to deliver fixed or variable measured quantities (for transferring liquid from bulk storage containers or reservoirs into vehicles or into portable containers B67D 5/40)

13/

02.of two or more fluids at the same time


15/

00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts

15/

02.the fluids being viscous or non-homogeneous

15/

04.the fluids being hot or corrosive (F04B 15/06 takes precedence)

15/

06.for liquids near their boiling point, e.g. under subnormal pressure

15/

08..the liquids having low boiling points


17/

00Pumps characterised by combination with, or adaptation to, specific driving engines or motors

17/

02.driven by wind motors

17/

03.driven by electric motors  [6]

17/

04..using solenoids  [6]

17/

05.driven by internal-combustion engines  [6]

17/

06.Mobile combinations


19/

00Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B 1/00 to F04B 17/00

19/

02.having movable cylinders

19/

04.Pumps for special use (for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers B67D 5/40)

19/

06..Pumps for delivery of both liquid and elastic fluids at the same time (wet gas pumps F04B 37/20)  [6]

19/

08.Scoop devices

19/

10..of wheel type

19/

12..of helical or screw type

19/

14..of endless-chain type, e.g. with the chains carrying pistons co-operating with open-ended cylinders

19/

16.Adhesion-type liquid-lifting devices

19/

18..Adhesion members therefor

19/

20.Other positive-displacement pumps

19/

22..of reciprocating-piston type

19/

24..Pumping by heat expansion of pumped fluid

   F04B 23/00 - F04B 53/22  
 

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