the units or parts thereof being liftable to ground level by fluid pressure

Patents Grantslast 30 patents

  • Information Patent Grant

    Compressed air operated fluid pump applied to oil wells

    • Patent number 10,415,603
    • Issue date Sep 17, 2019
    • Gary J. Sommese
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic pumping system with enhanced piston rod sealing

    • Patent number 9,903,187
    • Issue date Feb 27, 2018
    • Weatherford Technology Holdings, LLC
    • Clark E. Robison
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic gravity ram pump

    • Patent number 8,932,030
    • Issue date Jan 13, 2015
    • McNichol, Richard Frederick
    • Richard F. McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Submersible hydraulic artificial lift systems and methods of operat...

    • Patent number 8,789,609
    • Issue date Jul 29, 2014
    • David Randolph Smith
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic gravity ramp pump

    • Patent number 8,535,017
    • Issue date Sep 17, 2013
    • Richard F. McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic gravity ram pump

    • Patent number 7,967,578
    • Issue date Jun 28, 2011
    • Richard Frederick McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1½ Piston force pump

    • Patent number 6,193,476
    • Issue date Feb 27, 2001
    • Gerald T. Sweeney
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Triple action pumping system and method

    • Patent number 6,164,376
    • Issue date Dec 26, 2000
    • Texaco Inc.
    • Lon A. Stuebinger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Triple action pumping system with plunger valves

    • Patent number 6,142,224
    • Issue date Nov 7, 2000
    • Texaco Inc.
    • Lon A. Stuebinger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Sampling pump with packer

    • Patent number 5,238,060
    • Issue date Aug 24, 1993
    • OED Environmental Systems, Inc.
    • K. Lynn Niehaus
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Submersible pneumatic pump for water table

    • Patent number 5,013,218
    • Issue date May 7, 1991
    • Sigma Enterprises, Inc.
    • Larry K. Spencer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston and valve assembly

    • Patent number 4,544,335
    • Issue date Oct 1, 1985
    • George K. Roeder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Well pumping apparatus and method

    • Patent number 4,516,917
    • Issue date May 14, 1985
    • Otis Engineering Corporation
    • Carlos R. Canalizo
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole pump with safety valve

    • Patent number 4,440,231
    • Issue date Apr 3, 1984
    • Conoco Inc.
    • Albert E. Martin
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole, hydraulically-actuated pump and cavity having closed powe...

    • Patent number 4,268,227
    • Issue date May 19, 1981
    • George K. Roeder
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pollution control arrangements for engines

    • Patent number 4,044,738
    • Issue date Aug 30, 1977
    • Lucas Electrical Company Limited
    • Malcolm Williams
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3905745

    • Patent number 3,905,745
    • Issue date Sep 16, 1975
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3877447

    • Patent number 3,877,447
    • Issue date Apr 15, 1975
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3862624

    • Patent number 3,862,624
    • Issue date Jan 28, 1975
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3861367

    • Patent number 3,861,367
    • Issue date Jan 21, 1975
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3758238

    • Patent number 3,758,238
    • Issue date Sep 11, 1973
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3618576

    • Patent number 3,618,576
    • Issue date Nov 9, 1971
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3559402

    • Patent number 3,559,402
    • Issue date Feb 2, 1971
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    3368345

    • Patent number 3,368,345
    • Issue date Feb 13, 1968
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS AND METHOD FOR PUMPING A RESERVOIR

    • Publication number 20180266221
    • Publication date Sep 20, 2018
    • LEIGH TECHNOLOGIES INC.
    • Brennon Leigh Cote
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Systems And Methods For Artificial Lift Subsurface Injection And Do...

    • Publication number 20170167229
    • Publication date Jun 15, 2017
    • Randy C. Tolman
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC PUMPING SYSTEM WITH DETECTION OF FLUID IN GAS VOLUME

    • Publication number 20170037715
    • Publication date Feb 9, 2017
    • Weatherford Technology Holdings, LLC.
    • Jeffrey J. LEMBCKE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC GRAVITY RAM PUMP

    • Publication number 20130323086
    • Publication date Dec 5, 2013
    • Richard F. McNichol
    • Richard F. McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC GRAVITY RAMP PUMP

    • Publication number 20110255997
    • Publication date Oct 20, 2011
    • Richard Frederick McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SUBMERSIBLE HYDRAULIC ARTIFICIAL LIFT SYSTEMS AND METHODS OF OPERAT...

    • Publication number 20110247831
    • Publication date Oct 13, 2011
    • David Randolph Smith
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Hydraulic gravity ram pump

    • Publication number 20070172364
    • Publication date Jul 26, 2007
    • Richard Frederick McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hydraulic gravity ram pump

    • Publication number 20050169776
    • Publication date Aug 4, 2005
    • Richard Frederick McNichol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...