TREA

Hae Kyun CHEONG

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  • Pusan, KR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Negative control type hydraulic system
    • Patent number 8,713,930
    • Issue date May 6, 2014
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic circuit for heavy equipment
    • Patent number 8,024,926
    • Issue date Sep 27, 2011
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Pressure control device for heavy equipment
    • Patent number 8,011,387
    • Issue date Sep 6, 2011
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Relief valve
    • Patent number 7,159,610
    • Issue date Jan 9, 2007
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coin-filter mounting structure
    • Patent number 7,141,165
    • Issue date Nov 28, 2006
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Flow control apparatus for construction heavy equipment
    • Patent number 7,017,470
    • Issue date Mar 28, 2006
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Pilot operated relief valve
    • Patent number 6,986,362
    • Issue date Jan 17, 2006
    • Volvo Construction Equipment Holding Sweden AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    NEGATIVE CONTROL TYPE HYDRAULIC SYSTEM
    • Publication number 20110158830
    • Publication date Jun 30, 2011
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun CHEONG
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CIRCUIT FOR HEAVY EQUIPMENT
    • Publication number 20090094973
    • Publication date Apr 16, 2009
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun CHEONG
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Pressure control device for heavy equipment
    • Publication number 20080078285
    • Publication date Apr 3, 2008
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    Hydraulic relief valve
    • Publication number 20070056632
    • Publication date Mar 15, 2007
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Pressure compensating flow control hydraulic circuit having holding...
    • Publication number 20060283184
    • Publication date Dec 21, 2006
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Flow control apparatus for construction heavy equipment
    • Publication number 20050183571
    • Publication date Aug 25, 2005
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Pilot operated relief valve
    • Publication number 20050183775
    • Publication date Aug 25, 2005
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Relief valve
    • Publication number 20050178444
    • Publication date Aug 18, 2005
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Relief valve
    • Publication number 20050178443
    • Publication date Aug 18, 2005
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING
    • Hae Kyun Cheong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Coin-filter mounting structure
    • Publication number 20050133429
    • Publication date Jun 23, 2005
    • VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    • Hae Kyun Cheong
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL