POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS

Description

Class F04 encompasses positive-displacement pumps and machines that transport or compress liquids and elastic fluids (gases) through mechanical action. This includes reciprocating pumps (piston and diaphragm types), rotary pumps (gear, screw, vane, and lobe pumps), and jet pumps, as well as motors and actuators powered by fluid pressure. The class covers both the machine designs themselves and their functional applications in fluid handling systems, excluding general fluid distribution systems or mere conduit components covered elsewhere in the mechanical engineering hierarchy.

Related Keywords

AIR pumpsBLADES for turbines or non-positive displacement pumpsBLOWERS [= pumps][= pumps]arrangements and adaptations of CYLINDER(S) peculiar to engines or pumpsENGINE(S)exhausters [= pumps]FAN(S) [= pumps]GAS(ES) engines or pumpsHYDRAULIC(S) engines or pumpsraising or LIFTING waterLIQUID(S) engines or pumpsLUBRICATION of engines or pumpsMOTOR(S) [= engines]NORIASPISTON(S) engines or pumpsPISTON(S) peculiar to engines or pumpsPNEUMATIC(S) pumpsPRIME MOVERS [= engines](1) PUMPS for fluidspumps for RAREFYINGROTARY -piston engines or pumpspumps for SLUDGEarrangements or adaptations of VALVES peculiar to engines or pumps

4 direct subcodes

Child Classifications

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F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
F04D NON-POSITIVE-DISPLACEMENT PUMPS
F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS