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F04B49/002Hydraulic systems to change the pump delivery F04B49/005changing the phase relationship of two working pistons in one working chamber or the phase-relationship of a piston and a driven distribution member F04B49/007Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed F04B49/02Stopping, starting, unloading or idling control F04B49/022by means of pressure F04B49/025by means of floats F04B49/03by means of valves F04B49/035Bypassing F04B49/04Regulating by means of floats F04B49/06Control using electricity F04B49/065and making use of computers F04B49/08Regulating by delivery pressure F04B49/10Other safety measures F04B49/103Responsive to speed F04B49/106Responsive to pumped volume F04B49/12by varying the length of stroke of the working members F04B49/121Lost-motion device in the driving mechanism F04B49/123by changing the eccentricity of one element relative to another element F04B49/125by changing the eccentricity ot the actuation means F04B49/126with a double eccenter mechanism F04B49/128by changing the eccentricity of the cylinders F04B49/14Adjusting abutments located in the path of reciprocation F04B49/16by adjusting the capacity of dead spaces of working chambers F04B49/18by changing the effective cross-section of the working surface of the piston F04B49/20by changing the driving speed F04B49/22by means of valves F04B49/225with throttling valves or valves varying the pump inlet opening or the outlet opening F04B49/24Bypassing F04B49/243by keeping open the inlet valve F04B49/246by keeping open the outlet valve

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    SYSTEM FOR CONTROLLING A FLUID CIRCULATION PUMP AND IONIZER

    • Publication number 20250180007
    • Publication date Jun 5, 2025
    • Mitch Saccoccio
    • E04 - BUILDING
  • Information Patent Application

    VARIABLE TORQUE CONVERTER FOR BOREHOLE OPERATIONS

    • Publication number 20250180008
    • Publication date Jun 5, 2025
    • Halliburton Energy Services, Inc.
    • Stanley Vernon Stephenson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    METHOD OF CONTROLLING A PUMP AND MOTOR

    • Publication number 20250180028
    • Publication date Jun 5, 2025
    • Pentair Flow Technologies, LLC
    • Melissa Drechsel Kidd
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP WITH COMBINED ELECTRICAL CONTACT

    • Publication number 20250180029
    • Publication date Jun 5, 2025
    • MODINE MANUFACTURING COMPANY
    • Zachary Fleischmann
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT HYDRAULIC PUMP SYSTEM WITH OVER-TEMPERATURE P...

    • Publication number 20250179999
    • Publication date Jun 5, 2025
    • Parker-Hannifin Corporation
    • Steve A. KRANE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Method To Smooth Pump Rate While Fracturing

    • Publication number 20250180006
    • Publication date Jun 5, 2025
    • Halliburton Energy Services, Inc.
    • Zhijie Sun
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Method with a Hydraulic Pressure Medium Supply Arrangement, and Hyd...

    • Publication number 20250172131
    • Publication date May 29, 2025
    • ROBERT BOSCH GmbH
    • Marcel Golde
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PRODUCTION METHOD WITH A PLUNGER LIFT SYSTEM

    • Publication number 20250172057
    • Publication date May 29, 2025
    • Saudi Arabian Oil Company
    • Bagus Wahyu Setiadi
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    ELECTRIC COMPRESSOR

    • Publication number 20250163921
    • Publication date May 22, 2025
    • Sanden Corporation
    • Mikio KOBAYASHI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DIAMETER VALVE BORES FOR THRU ROD FLUID ENDS

    • Publication number 20250163902
    • Publication date May 22, 2025
    • GD Energy Products, LLC
    • Konner Casey Kay
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SMOOTHING PUMP RATE DURING TRANSITION

    • Publication number 20250163907
    • Publication date May 22, 2025
    • Halliburton Energy Services, Inc.
    • Behrouz Ebrahimi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    JUMPER LINES WITH PUMPS

    • Publication number 20250163908
    • Publication date May 22, 2025
    • TPE MIDSTREAM LLC
    • Douglas A. Sahm
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SYSTEM AND METHOD FOR AN EARLY WARNING SYSTEM FOR MITIGATING HIGH F...

    • Publication number 20250167640
    • Publication date May 22, 2025
    • Magney Grande Distribution, Inc
    • Salvatore F. Grande
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PREVENTING POWER BLACKOUT WHILE FRACTURING

    • Publication number 20250163906
    • Publication date May 22, 2025
    • Halliburton Energy Services, Inc.
    • Elijah Sterling Bogle
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    IN-LINE PUMPING APPARATUS, SYSTEM, AND METHOD FOR INCREASING LIQUID...

    • Publication number 20250163918
    • Publication date May 22, 2025
    • INDUSTRIAL FLOW SOLUTIONS OPERATING LLC
    • Graham MCIVOR
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    BLOOD PRESSURE MEASUREMENT DEVICE WITH A MEMS PUMP AND CONTROL METH...

    • Publication number 20250152024
    • Publication date May 15, 2025
    • Microlife Corporation
    • Chia-Ming LIN
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SYSTEMS AND METHODS FOR DETERMINING OIL QUALITY

    • Publication number 20250155423
    • Publication date May 15, 2025
    • Saudi Arabian Oil Company
    • Mutlaq F. Azmi
    • G01 - MEASURING TESTING
  • Information Patent Application

    VARIABLE TORQUE CONVERTER FOR BOREHOLE OPERATIONS

    • Publication number 20250154946
    • Publication date May 15, 2025
    • Halliburton Energy Services, Inc.
    • Stanley Vernon Stephenson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    ELECTRIC SUBMERSIBLE PUMP OPERATING PARAMETERS

    • Publication number 20250154857
    • Publication date May 15, 2025
    • Saudi Arabian Oil Company
    • Mohammed Ahmed Kaki
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    RUBIDIUM ELUTION SYSTEM CONTROL

    • Publication number 20250157684
    • Publication date May 15, 2025
    • Jubilant Draximage, Inc.
    • Etienne LEFORT
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    METHOD FOR CONTROLLING A FIRST REFERENCE TEMPERATURE IN A DEVICE FO...

    • Publication number 20250146486
    • Publication date May 8, 2025
    • ATLAS COPCO AIRPOWER, naamloze vennootschap
    • Bram Julien DAUWE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LOW-FLOW AND DOUBLE-OUTLET ELECTROMAGNETIC PLUNGER PUMP

    • Publication number 20250146480
    • Publication date May 8, 2025
    • Sichuan Aerospace Shiyuan Technology Co., Ltd.
    • Rong Hou
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DETECTION AND EXTRACTION OF NAPL CONTAMINATES

    • Publication number 20250137451
    • Publication date May 1, 2025
    • NAPL Solutions, LLC
    • Daniel Alexander Smedley
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DRIVE POWER BASED PUMP MONITORING

    • Publication number 20250137447
    • Publication date May 1, 2025
    • Halliburton Energy Services, Inc.
    • Timothy Holiman Hunter
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    MANAGING LUBRICATION OF HYDRAULIC FRACTURING PUMPS

    • Publication number 20250137448
    • Publication date May 1, 2025
    • Halliburton Energy Services, Inc.
    • Madhur Kohli
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    MONITORING PUMP SPEEDS OF PERISTALTIC PUMPS

    • Publication number 20250137449
    • Publication date May 1, 2025
    • Hydration Labs, Inc.
    • David Watt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZATION OR IMPROVEMENT OF THE EFFICIENCY OF A SYSTEM FOR PRESS...

    • Publication number 20250131150
    • Publication date Apr 24, 2025
    • ATLAS COPCO AIRPOWER, naamloze vennootschap
    • Philippe GEUENS
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    CORDLESS COMPRESSOR

    • Publication number 20250129776
    • Publication date Apr 24, 2025
    • Black & Decker Inc.
    • Kathleen A. Miller
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID PUMP ASSEMBLY

    • Publication number 20250122867
    • Publication date Apr 17, 2025
    • Jeffery D. Baird
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    PUMPING CASSETTE

    • Publication number 20250122871
    • Publication date Apr 17, 2025
    • DEKA Products Limited Partnership
    • Jason A. Demers
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...