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IPC entry: F04C 2/18 4-dot subgroup [Version 2024.01 (current), Language EN - English]

Symbol Select IPC entry Title
A
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HUMAN NECESSITIES
B
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PERFORMING OPERATIONS; TRANSPORTING
C
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CHEMISTRY; METALLURGY
D
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TEXTILES; PAPER
E
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FIXED CONSTRUCTIONS
F
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MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01
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ENGINES OR PUMPS
F01
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MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F02
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COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F03
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MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F04
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POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04B
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POSITIVE-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)
F04C
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ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines driven by liquids F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M)
F04C 2/00
Machines for liquids; Pumps for liquids or for liquids and elastic fluids [2011.01]
F04C 2/00
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Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) [3, 2006.01]
F04C 2/02
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. of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents [3, 2006.01]
F04C 2/04
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. . of internal-axis type [3, 2006.01]
F04C 2/06
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. . of other than internal-axis type (F04C 2/063 takes precedence) [3, 2006.01]
F04C 2/063
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. . with coaxially-mounted members having continuously-changing circumferential spacing between them [3, 2006.01]
F04C 2/067
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. . . having cam-and-follower type drive [3, 2006.01]
F04C 2/07
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. . . having crankshaft-and-connecting-rod type drive [3, 2006.01]
F04C 2/073
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. . . having pawl-and-ratchet type drive [3, 2006.01]
F04C 2/077
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. . . having toothed-gearing type drive [3, 2006.01]
F04C 2/08
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. of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing [3, 2006.01]
F04C 2/10
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. . of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member [3, 2006.01]
F04C 2/107
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. . . with helical teeth [3, 2006.01]
F04C 2/113
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. . . the inner member carrying rollers intermeshing with the outer member [3, 2006.01]
F04C 2/12
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. . of other than internal-axis type [3, 2006.01]
F04C 2/14
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. . . with toothed rotary pistons [3, 2006.01]
F04C 2/16
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. . . . with helical teeth, e.g. chevron-shaped, screw type [3, 2006.01]
F04C 2/18
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. . . . with similar tooth forms (F04C 2/16 takes precedence) [3, 2006.01]
F04C 2/20
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. . . . with dissimilar tooth forms (F04C 2/16 takes precedence) [3, 2006.01]
F04C 2/22
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. of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member [3, 2006.01]
F04C 2/24
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. of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions [3, 2006.01]
F04C 2/26
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. . of internal-axis type [3, 2006.01]
F04C 2/28
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. . of other than internal-axis type [3, 2006.01]
F04C 2/30
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. having the characteristics covered by two or more of groups F04C 2/02, F04C 2/08, F04C 2/22, F04C 2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members [3, 2006.01]
F04C 2/32
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. . having both the movement defined in group F04C 2/02 and relative reciprocation between the co-operating members [3, 2006.01]
F04C 2/324
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. . . with vanes hinged to the inner member and reciprocating with respect to the outer member [3, 2006.01]
F04C 2/328
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. . . . and hinged to the outer member [3, 2006.01]
F04C 2/332
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. . . with vanes hinged to the outer member and reciprocating with respect to the inner member [3, 2006.01]
F04C 2/336
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. . . . and hinged to the inner member [3, 2006.01]
F04C 2/34
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. . having the movement defined in group F04C 2/08 or F04C 2/22 and relative reciprocation between the co-operating members [3, 2006.01]
F04C 2/344
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. . . with vanes reciprocating with respect to the inner member [3, 2006.01]
F04C 2/348
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. . . . the vanes positively engaging, with circumferential play, an outer rotatable member [3, 2006.01]
F04C 2/352
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. . . . the vanes being pivoted on the axis of the outer member [3, 2006.01]
F04C 2/356
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. . . with vanes reciprocating with respect to the outer member [3, 2006.01]
F04C 2/36
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. . having both the movements defined in groups F04C 2/22 and F04C 2/24 [3, 2006.01]
F04C 2/38
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. . having the movement defined in group F04C 2/02 and having a hinged member (F04C 2/32 takes precedence) [3, 2006.01]
F04C 2/39
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. . . with vanes hinged to the inner as well as to the outer member [3, 2006.01]
F04C 2/40
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. . having the movement defined in group F04C 2/08 or F04C 2/22 and having a hinged member [3, 2006.01]
F04C 2/44
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. . . with vanes hinged to the inner member [3, 2006.01]
F04C 2/46
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. . . with vanes hinged to the outer member [3, 2006.01]
F04C 3/00
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Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type (with the working-chamber walls at least partly resiliently deformable F04C 5/00; rotary-piston pumps with non-parallel axes of movement of co-operating members specially adapted for elastic fluids F04C 18/48) [1, 2006.01]
F04C 5/00
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Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable (such pumps specially adapted for elastic fluids F04C 18/00) [1, 2006.01]
F04C 7/00
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Rotary-piston machines or pumps with fluid ring or the like (such pumps specially adapted for elastic fluids F04C 19/00) [1, 2006.01]
F04C 9/00
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Oscillating-piston machines or pumps (such pumps specially adapted for elastic fluids F04C 21/00) [1, 2006.01]
F04C 11/00
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Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type (combinations of such pumps specially adapted for elastic fluids F04C 23/00); Pumping installations (F04C 13/00 takes precedence; specially adapted for elastic fluids F04C 23/00; fluid gearing  F16H 39/00-F16H 47/00) [1, 2006.01]
F04C 13/00
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Adaptations of machines or pumps for special use, e.g. for extremely high pressures (of pumps specially adapted for elastic fluids F04C 25/00) [1, 2006.01]
F04C 14/00
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Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (of pumps or pumping installations specially adapted for elastic fluids F04C 28/00) [2006.01]
F04C 15/00
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Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C 2/00-F04C 14/00 (of pumps specially adapted for elastic fluids F04C 18/00-F04C 29/00) [1, 2006.01]
F04C 18/00
Pumps specially adapted for elastic fluids
F04C 18/00
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Rotary-piston pumps specially adapted for elastic fluids (with fluid ring or the like F04C 19/00; rotary-piston pumps in which the working-fluid is exclusively displaced by one or more reciprocating pistons F04B) [3, 2006.01]
F04C 19/00
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Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids [1, 2006.01]
F04C 21/00
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Oscillating-piston pumps specially adapted for elastic fluids [1, 2006.01]
F04C 23/00
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Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (F04C 25/00 takes precedence) [1, 2006.01]
F04C 25/00
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Adaptations for special use of pumps for elastic fluids [1, 2006.01]
F04C 27/00
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Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids [1, 2006.01]
F04C 28/00
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Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids [2006.01]
F04C 29/00
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Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C 18/00-F04C 28/00 [1, 2006.01]
F04D
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NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J 41/12; electrodynamic pumps H02K 44/02)
F04F
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PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED (containers or packages with special means for dispensing liquid or semi-liquid contents by internal gaseous pressure B65D 83/14); SIPHONS [2]
F15
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ENGINEERING IN GENERAL
F15
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FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
F16
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ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F17
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STORING OR DISTRIBUTING GASES OR LIQUIDS
F21
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LIGHTING; HEATING
F21
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LIGHTING
F22
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STEAM GENERATION
F23
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COMBUSTION APPARATUS; COMBUSTION PROCESSES
F24
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HEATING; RANGES; VENTILATING
F25
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REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
F26
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DRYING
F27
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FURNACES; KILNS, OVENS OR RETORTS [4]
F28
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HEAT EXCHANGE IN GENERAL
F41
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WEAPONS; BLASTING
F41
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WEAPONS
F42
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AMMUNITION; BLASTING
F99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
G
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PHYSICS
H
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ELECTRICITY

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