ClassID:

143589

F04C18/20 - 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 with toothed rotary pistons with dissimilar tooth forms

Recent Application in this class:
#1
20260146608
2026-05-28

COMPLEX SCREW ROTORS

#2
20240426298
2024-12-26

COMPLEX SCREW ROTORS

#3
20240175436
2024-05-30

ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE

#4
20240110565
2024-04-04

Rotor assembly, compressor and air conditioner

#5
20230272797
2023-08-31

Complex screw rotors having multiple helical profiles joined by a centeral portion with a pocket

#6
20220403845
2022-12-22

Liquid-feeding rotary-screw compressor

#7
20220136504
2022-05-05

ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE

#8
20210372401
2021-12-02

Screw compressor with male and female rotors

#9
20210231122
2021-07-29

Complex screw rotors

#10
20200386231
2020-12-10

Liquid-injected screw compressor

#11
20200040894
2020-02-06

Rotor pair for a compression block of a screw machine

#12
20190241169
2019-08-08

Assembly of Screws for a Screw Compressor for a Utility Vehicle

#13
20190128264
2019-05-02

Oil-cooled screw compressor

#14
20180258934
2018-09-13

Complex screw rotors

#15
20180023571
2018-01-25

Oil-flooded screw compressor system and method for modifying the same

#16
20170356448
2017-12-14

Screw compressor with oil shutoff and method

#17
20170122318
2017-05-04

Screw rotor with high lobe count

#18
20170045050
2017-02-16

Rotor pair for a compression block of a screw machine

#19
20150211517
2015-07-30

Screw fluid machine, including male and female rotors

#20
20120093671
2012-04-19

Compressor having outlet with gap to enhance volumetric efficiency

#21
20100086428
2010-04-08

Rotor profile for a screw compressor