with helical teeth

Industry

CPC
F04C2/107

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS F04C2/00Rotary-piston machines or pumps

Current Industry

F04C2/107with helical teeth

Industries

Patents Grantslast 30 patents

Information Patent Grant
Helical trochoidal rotary machines with improved solids handling
- Patent number 12,146,492
- Issue date Nov 19, 2024
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Mud motor rotor with core and shell
- Patent number 12,140,144
- Issue date Nov 12, 2024
- Schlumberger Technology Corporation
- Anton Kolyshkin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Surface driven downhole pump system
- Patent number 12,140,136
- Issue date Nov 12, 2024
- Saudi Arabian Oil Company
- Jinjiang Xiao
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Eccentric screw pump with working engagement and idle engagement an...
- Patent number 12,129,851
- Issue date Oct 29, 2024
- VOGELSANG GMBH & CO. KG
- Michael Rolfes
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Disposable pump cartridge
- Patent number 12,129,848
- Issue date Oct 29, 2024
- Johnson & Johnson Surgical Vision, Inc.
- Yehuda Algawi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Cartridge system and eccentric screw pump
- Patent number 12,117,005
- Issue date Oct 15, 2024
- VISCOTEC PUMPEN-U. DOSIERTECHNIK GMBH
- Robert Heizinger
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Progressive cavity pump
- Patent number 12,117,004
- Issue date Oct 15, 2024
- PROTEC CO., LTD.
- Keon Hee Kim
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
System and methodology comprising composite stator for low flow ele...
- Patent number 12,110,892
- Issue date Oct 8, 2024
- Schlumberger Technology Corporation
- Peter Hondred
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
High modulus liners in PDM stators with diameter reliefs compensati...
- Patent number 12,084,975
- Issue date Sep 10, 2024
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Sealing assembly for a progressive cavity pump
- Patent number 12,018,688
- Issue date Jun 25, 2024
- Johnson & Johnson Surgical Vision, Inc.
- Ilya Sitnitsky
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotor unit and eccentric screw pump
- Patent number 12,018,687
- Issue date Jun 25, 2024
- VISCOTEC PUMPEN-U. DOSIERTECHNIK GMBH
- Horst Kelsch
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Sealing in helical trochoidal rotary machines
- Patent number 11,988,208
- Issue date May 21, 2024
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Intelligent oil extraction system using all-metal screw pump
- Patent number 11,913,312
- Issue date Feb 27, 2024
- WUXI HENGXIN BEISHI TECHNOLOGY CO., LTD
- Haiyang Liang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Coring apparatus for rubber stator
- Patent number 11,905,792
- Issue date Feb 20, 2024
- Clean-Tube LLC
- Paul D. Jezek
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Fiber-reinforced rubber compound useful in PDM stators
- Patent number 11,885,333
- Issue date Jan 30, 2024
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Moineau pump-type quantitative liquid-discharging apparatus
- Patent number 11,879,462
- Issue date Jan 23, 2024
- Hyuk Beom Yoon
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Uniaxial eccentric screw pump
- Patent number 11,867,172
- Issue date Jan 9, 2024
- Heishin Ltd
- Nobuhisa Suhara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotor for an eccentric screw pump and method for the manufacture th...
- Patent number 11,841,016
- Issue date Dec 12, 2023
- VOGELSANG GMBH & CO. KG
- Peter Hartogh
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Eccentric-screw pump with concentricity sensor
- Patent number 11,841,017
- Issue date Dec 12, 2023
- seepex GmbH
- Julian Harking
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Progressive cavity pump
- Patent number 11,821,426
- Issue date Nov 21, 2023
- Henkel AG & Co. KGaA
- Nicholas E. Stanca
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Fixed-eccentricity helical trochoidal rotary machines
- Patent number 11,815,094
- Issue date Nov 14, 2023
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Fluid transfer device, coating device comprising same, and coating...
- Patent number 11,815,092
- Issue date Nov 14, 2023
- Musashi Engineering, Inc.
- Kazumasa Ikushima
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Elastomeric stator with modified fiber orientation
- Patent number 11,806,902
- Issue date Nov 7, 2023
- Abaco Drilling Technologies LLC
- Peter T. Cariveau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Positive displacement motor stators with diameter reliefs compensat...
- Patent number 11,808,153
- Issue date Nov 7, 2023
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- E21 - EARTH DRILLING MINING
Information Patent Grant
Axial load in helical trochoidal rotary machines
- Patent number 11,802,558
- Issue date Oct 31, 2023
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Mud motor rotor with core and shell
- Patent number 11,795,946
- Issue date Oct 24, 2023
- Schlumberger Technology Corporation
- Anton Kolyshkin
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Optimized adhesive thickness for metal-to-elastomer bonding in oilf...
- Patent number 11,788,356
- Issue date Oct 17, 2023
- Halliburton Energy Services, Inc.
- Byong Jun Kim
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flow-through pulsing assembly for use in downhole operations
- Patent number 11,788,382
- Issue date Oct 17, 2023
- IMPULSE DOWNHOLE SOLUTIONS LTD.
- Troy Lorenson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Micro-volume dispense pump systems and methods
- Patent number 11,746,656
- Issue date Sep 5, 2023
- DL Technology, LLC
- Jeffrey P. Fugere
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Molding method for producing a stator for a screw drilling tool usi...
- Patent number 11,673,297
- Issue date Jun 13, 2023
- SHANGHAI PUJIA DRILLING TECHNOLOGY CO., LTD.
- Dingyu Guo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
INTERNAL GEAR MACHINE
- Publication number 20240360829
- Publication date Oct 31, 2024
- HYDRAULIK NORD TECHNOLOGIES GMBH
- Artur BOHR
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Sealing In Helical Trochoidal Rotary Machines
- Publication number 20240280099
- Publication date Aug 22, 2024
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
MODULAR STATOR FOR PROGRESSIVE CAVITY DEVICES
- Publication number 20240247655
- Publication date Jul 25, 2024
- Roper Pump Company LLC
- Trevor Mark Brasselle
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
RUBBER COMPOUND WITH FIBER REINFORCEMENT
- Publication number 20240167475
- Publication date May 23, 2024
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
UNIAXIAL ECCENTRIC SCREW PUMP
- Publication number 20240125321
- Publication date Apr 18, 2024
- HEISHIN Ltd.
- Nobuhisa SUHARA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
PIN COUPLING FOR CONNECTING A ROTARY DRIVE TO A PROGRESSIVE-CAVITY...
- Publication number 20240117844
- Publication date Apr 11, 2024
- Gordon L. FENTON
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
PROGRESSIVE CAVITY PUMP
- Publication number 20240093685
- Publication date Mar 21, 2024
- PROTEC CO., LTD.
- KEON HEE KIM
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Axial Load In Helical Trochoidal Rotary Machines
- Publication number 20240093686
- Publication date Mar 21, 2024
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
HIGH MODULUS LINERS IN PDM STATORS WITH DIAMETER RELIEFS COMPENSATI...
- Publication number 20240044251
- Publication date Feb 8, 2024
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- E21 - EARTH DRILLING MINING
Information Patent Application
ROTOR FOR AN ECCENTRIC SCREW PUMP AND METHOD FOR THE MANUFACTURE TH...
- Publication number 20240044330
- Publication date Feb 8, 2024
- VOGELSANG GMBH & CO. KG
- Peter Hartogh
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
REDUCTION OF EQUIVALENT CIRCULATING DENSITY IN WELL OPERATIONS
- Publication number 20240044219
- Publication date Feb 8, 2024
- Weatherford Technology Holdings, LLC.
- Tuong T. LE
- E21 - EARTH DRILLING MINING
Information Patent Application
MUD MOTOR ROTOR WITH CORE AND SHELL
- Publication number 20240026880
- Publication date Jan 25, 2024
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Anton Kolyshkin
- E21 - EARTH DRILLING MINING
Information Patent Application
ROTOR UNIT AND ECCENTRIC SCREW PUMP
- Publication number 20230417241
- Publication date Dec 28, 2023
- VISCOTEC PUMPEN- U. DOSIERTECHNIK GMBH
- Horst KELSCH
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Rotary Machines With Teardrop-Shaped Rotors
- Publication number 20230417242
- Publication date Dec 28, 2023
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS
- Publication number 20230417126
- Publication date Dec 28, 2023
- IMPULSE DOWNHOLE SOLUTIONS LTD.
- Troy LORENSON
- E21 - EARTH DRILLING MINING
Information Patent Application
HYDRAULIC PUMP
- Publication number 20230400021
- Publication date Dec 14, 2023
- Ree Automotive Ltd
- Tomer LIPPMANN
- B60 - VEHICLES IN GENERAL
Information Patent Application
FAULT RECTIFICATION METHOD FOR A PROGRESSIVE CAVITY PUMP OF A CONVE...
- Publication number 20230349378
- Publication date Nov 2, 2023
- J. Wagner GmbH
- Thorsten SCHNITTGER
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SYSTEM AND METHODOLOGY COMPRISING COMPOSITE STATOR FOR LOW FLOW ELE...
- Publication number 20230313794
- Publication date Oct 5, 2023
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Peter Hondred
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Eccentric Screw Pump With A Modular Design
- Publication number 20230265847
- Publication date Aug 24, 2023
- NETZSCH Pumpen & Systeme GmbH
- Frank Goetz
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
FLUID TRANSFER DEVICE, COATING DEVICE COMPRISING SAME, AND COATING...
- Publication number 20230265848
- Publication date Aug 24, 2023
- MUSASHI ENGINEERING, INC.
- Kazumasa Ikushima
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
SEALING ASSEMBLY FOR A PROGRESSIVE CAVITY PUMP
- Publication number 20230258177
- Publication date Aug 17, 2023
- Johnson & Johnson Surgical Vision, Inc.
- Ilya Sitnitsky
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
PLASTICIZER REDUCING DYNAMIC FATIGUE IN FIBER REINFORCED ELASTOMERS
- Publication number 20230167280
- Publication date Jun 1, 2023
- Abaco Drilling Technologies LLC
- Robert Bohmer
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
ECCENTRIC SCREW PUMP WITH WORKING ENGAGEMENT AND IDLE ENGAGEMENT AN...
- Publication number 20230167818
- Publication date Jun 1, 2023
- VOGELSANG GMBH & CO. KG
- Michael Rolfes
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
OPTIMIZED ADHESIVE THICKNESS FOR METAL-TO-ELASTOMER BONDING IN OILF...
- Publication number 20230160261
- Publication date May 25, 2023
- Halliburton Energy Services, Inc.
- Byong Jun Kim
- E21 - EARTH DRILLING MINING
Information Patent Application
FIBER-REINFORCED RUBBER COMPOUND USEFUL IN PDM STATORS
- Publication number 20230141414
- Publication date May 11, 2023
- Abaco Drilling Technologies, LLC
- Peter Thomas Cariveau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
CORING APPARATUS FOR RUBBER STATOR
- Publication number 20230096992
- Publication date Mar 30, 2023
- Clean-Tube LLC
- Paul D. Jezek
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Sealing In Helical Trochoidal Rotary Machines
- Publication number 20230098259
- Publication date Mar 30, 2023
- Rotoliptic Technologies Incorporated
- Greg John Montie
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
POSITIVE DISPLACEMENT MOTOR STATORS WITH DIAMETER RELIEFS COMPENSAT...
- Publication number 20230065707
- Publication date Mar 2, 2023
- Abaco Drilling Technologies LLC
- Peter Thomas Cariveau
- E21 - EARTH DRILLING MINING
Information Patent Application
MOINEAU PUMP-TYPE QUANTITATIVE LIQUID-DISCHARGING APPARATUS
- Publication number 20230024160
- Publication date Jan 26, 2023
- Hyuk Beom YOON
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
ECCENTRIC SCREW PUMP
- Publication number 20220389926
- Publication date Dec 8, 2022
- GRUNDFOS HOLDING A/S
- Niels Erik LINNEMANN NIELSEN
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

with helical teeth

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Helical trochoidal rotary machines with improved solids handling

Mud motor rotor with core and shell

Surface driven downhole pump system

Eccentric screw pump with working engagement and idle engagement an...

Disposable pump cartridge

Cartridge system and eccentric screw pump

Progressive cavity pump

System and methodology comprising composite stator for low flow ele...

High modulus liners in PDM stators with diameter reliefs compensati...

Sealing assembly for a progressive cavity pump

Rotor unit and eccentric screw pump

Sealing in helical trochoidal rotary machines

Intelligent oil extraction system using all-metal screw pump

Coring apparatus for rubber stator

Fiber-reinforced rubber compound useful in PDM stators

Moineau pump-type quantitative liquid-discharging apparatus

Uniaxial eccentric screw pump

Rotor for an eccentric screw pump and method for the manufacture th...

Eccentric-screw pump with concentricity sensor

Progressive cavity pump

Fixed-eccentricity helical trochoidal rotary machines

Fluid transfer device, coating device comprising same, and coating...

Elastomeric stator with modified fiber orientation

Positive displacement motor stators with diameter reliefs compensat...

Axial load in helical trochoidal rotary machines

Mud motor rotor with core and shell

Optimized adhesive thickness for metal-to-elastomer bonding in oilf...

Flow-through pulsing assembly for use in downhole operations

Micro-volume dispense pump systems and methods

Molding method for producing a stator for a screw drilling tool usi...

Patents Applicationslast 30 patents

INTERNAL GEAR MACHINE

Sealing In Helical Trochoidal Rotary Machines

MODULAR STATOR FOR PROGRESSIVE CAVITY DEVICES

RUBBER COMPOUND WITH FIBER REINFORCEMENT

UNIAXIAL ECCENTRIC SCREW PUMP

PIN COUPLING FOR CONNECTING A ROTARY DRIVE TO A PROGRESSIVE-CAVITY...

PROGRESSIVE CAVITY PUMP

Axial Load In Helical Trochoidal Rotary Machines

HIGH MODULUS LINERS IN PDM STATORS WITH DIAMETER RELIEFS COMPENSATI...

ROTOR FOR AN ECCENTRIC SCREW PUMP AND METHOD FOR THE MANUFACTURE TH...

REDUCTION OF EQUIVALENT CIRCULATING DENSITY IN WELL OPERATIONS

MUD MOTOR ROTOR WITH CORE AND SHELL

ROTOR UNIT AND ECCENTRIC SCREW PUMP

Rotary Machines With Teardrop-Shaped Rotors

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

HYDRAULIC PUMP

FAULT RECTIFICATION METHOD FOR A PROGRESSIVE CAVITY PUMP OF A CONVE...

SYSTEM AND METHODOLOGY COMPRISING COMPOSITE STATOR FOR LOW FLOW ELE...

Eccentric Screw Pump With A Modular Design

FLUID TRANSFER DEVICE, COATING DEVICE COMPRISING SAME, AND COATING...

SEALING ASSEMBLY FOR A PROGRESSIVE CAVITY PUMP

PLASTICIZER REDUCING DYNAMIC FATIGUE IN FIBER REINFORCED ELASTOMERS

ECCENTRIC SCREW PUMP WITH WORKING ENGAGEMENT AND IDLE ENGAGEMENT AN...

OPTIMIZED ADHESIVE THICKNESS FOR METAL-TO-ELASTOMER BONDING IN OILF...

FIBER-REINFORCED RUBBER COMPOUND USEFUL IN PDM STATORS

CORING APPARATUS FOR RUBBER STATOR

Sealing In Helical Trochoidal Rotary Machines

POSITIVE DISPLACEMENT MOTOR STATORS WITH DIAMETER RELIEFS COMPENSAT...

MOINEAU PUMP-TYPE QUANTITATIVE LIQUID-DISCHARGING APPARATUS

ECCENTRIC SCREW PUMP