| IPC 7 English version |
| F04F-F04F01102 |
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| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 04 | POSITIVE-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) |
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| F 04 F | 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] |
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| Notes |
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| (1) | Attention is drawn to the Notes preceding class F01. |
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| (2) | Combinations of pumps covered by this subclass with other pumps are only classified in this subclass if such other pumps are intended for preliminary pumping for diffusion pumps. |
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| Subclass Index |
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| PUMPS USING PRESSURE OR FLOW OF ANOTHER FLUID |
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| PUMPS USING NEGATIVE PRESSURE; PUMPS USING INERTIA OF THE FLUID |
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| DIFFUSION PUMPS, e.g. WITH FORE PUMPS |
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| SIPHONS; OTHER PUMPS |
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| JET-PUMP INSTALLATIONS |
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1/ | 00 | Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (using only negative pressure F04F 3/00; jet pumps F04F 5/00; siphons F04F 10/00) |
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1/ | 02 | . | using both positively and negatively pressurised fluid medium, e.g. alternating |
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1/ | 04 | . | . | generated by vaporising and condensing |
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1/ | 06 | . | the fluid medium acting on the surface of the liquid to be pumped (F04F 1/02 takes precedence) |
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1/ | 08 | . | . | specially adapted for raising liquids from great depths, e.g. in wells |
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1/ | 10 | . | . | of multiple type, e.g. with two or more units in parallel (F04F 1/08 takes precedence) |
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1/ | 12 | . | . | . | in series |
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1/ | 14 | . | . | adapted to pump specific liquids, e.g. corrosive or hot liquids |
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1/ | 16 | . | . | characterised by the fluid medium being suddenly pressurised, e.g. by explosion |
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1/ | 18 | . | the fluid medium being mixed with, or generated from, the liquid to be pumped |
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1/ | 20 | . | . | specially adapted for raising liquids from great depths, e.g. in wells |
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3/ | 00 | Pumps using negative pressure acting directly on the liquid to be pumped (siphons F04F 10/00) |
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5/ | 00 | Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow (diffusion pumps F04F 9/00; combination of jet pumps with pumps of other than jet type F04B; use of jet pumps for priming or boosting non-positive-displacement pumps F04D) |
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5/ | 02 | . | the inducing fluid being liquid |
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5/ | 04 | . | . | displacing elastic fluids |
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5/ | 06 | . | . | . | of rotary type |
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5/ | 08 | . | . | . | the elastic fluid being entrained in a free-falling column of liquid |
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5/ | 10 | . | . | displacing liquids, e.g. containing solids, or liquids and elastic fluids |
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5/ | 12 | . | . | . | of multi-stage type |
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5/ | 14 | . | the inducing fluid being elastic fluid |
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5/ | 16 | . | . | displacing elastic fluids |
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5/ | 18 | . | . | . | for compressing |
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5/ | 20 | . | . | . | for evacuating |
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5/ | 22 | . | . | . | . | of multi-stage type |
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5/ | 24 | . | . | displacing liquids, e.g. containing solids, or liquids and elastic fluids |
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5/ | 26 | . | . | . | of multi-stage type (F04F 5/28 takes precedence) |
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5/ | 28 | . | . | . | Restarting of inducing action |
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5/ | 30 | . | . | . | . | with axially-slidable combining nozzle |
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5/ | 32 | . | . | . | . | with hinged flap in combining nozzle |
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5/ | 34 | . | . | characterised by means for changing inducing-fluid source |
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5/ | 36 | . | . | characterised by using specific inducing fluid |
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5/ | 38 | . | . | . | the inducing fluid being mercury vapour |
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5/ | 40 | . | . | . | the inducing fluid being oil vapour |
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5/ | 42 | . | characterised by the input flow of inducing fluid medium being radial or tangential to output flow (cyclones B04C) |
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5/ | 44 | . | Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F 5/02 to F04F 5/42 |
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5/ | 46 | . | . | Arrangements of nozzles |
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5/ | 48 | . | . | Control |
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5/ | 50 | . | . | . | of compressing pumps |
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5/ | 52 | . | . | . | of evacuating pumps |
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5/ | 54 | . | Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type |
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7/ | 00 | Pumps displacing fluids by using inertia thereof, e.g. by generating vibrations therein |
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7/ | 02 | . | Hydraulic rams |
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9/ | 00 | Diffusion pumps |
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9/ | 02 | . | of multi-stage type |
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9/ | 04 | . | in combination with fore pumps, e.g. use of isolating valves |
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9/ | 06 | . | Arrangement of vapour traps |
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9/ | 08 | . | Control |
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10/ | 00 | Siphons |
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10/ | 02 | . | Gravity-actuated siphons |
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11/ | 00 | Other pumps (evacuating by sorption F04B) |
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11/ | 02 | . | Pressure exchangers [3] |
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