F04C18/12 - CPC Classification Index

ClassID:

143582 ⎘

F04C18/12 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type

Sub-classes:

F04C18/123 » {with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth} 59
F04C18/126 » {with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type} 258
F04C18/14 » with toothed rotary pistons 21

Recent Application in this class:

20250264104

2025-08-21

NOISE AND VIBRATION MANAGEMENT FOR SMOKE EVACUATION SYSTEM

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2023-10-26

NOISE AND VIBRATION MANAGEMENT FOR SMOKE EVACUATION SYSTEM

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2021-12-23

Positive displacement machine with kinematic synchronization coupling and with driven moving parts having their own individual drives

20190203718

2019-07-04

Screw compressor for a utility vehicle

20190203708

2019-07-04

HOLLOW ROTOR LOBE AND CONTROL OF TIP DEFLECTION

20190162186

2019-05-30

Noise and vibration management for smoke evacuation system

20180238328

2018-08-23

Pump comprising a proximity sensor

20170282270

2017-10-05

Vacuum-processing device and control method therefor, and vacuum soldering device and control method therefor

20170122319

2017-05-04

Vacuum pump system

#10

20150125312

2015-05-07

Method of operating a pumping system

#11

20150071765

2015-03-12

Supercharger transmission

#12

20140334959

2014-11-13

SUPERCHARGER TORSIONAL COMPLIANCE AND DAMPING FEATURES

#13

20140271136

2014-09-18

Supercharger with sun gear and planetary gears

#14

20140193283

2014-07-10

GAS EXHAUST PUMP SYSTEM AND GAS EXHAUST METHOD

#15

20140161656

2014-06-12

Gearbox Pump

#16

20140017101

2014-01-16

CLUTCH SUBASSEMBLY AND CLUTCHED SUPERCHARGER MADE USING THE SAME

#17

20140017062

2014-01-16

Vacuum pump with longitudinal and annular seals

#18

20130236348

2013-09-12

Rotary piston pump and casing half-shells for same

#19

20120219407

2012-08-30

Vacuum pump

#20

20120051948

2012-03-01

Vacuum Pump

#21

20120003105

2012-01-05

Dry vacuum pump having multiple lubricant reservoirs

#22

20100086402

2010-04-08

High efficiency supercharger outlet

#23

20100047080

2010-02-25

Method of operating a pumping system

#24

20090317261

2009-12-24

Pumping system and method of operation

#25

20060051231

2006-03-09

Compressor machine with two counter-rotating rotors