TREA

Piston-rings

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Industry

  • CPC
  • F16J9/00
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F16Engineering elements F16JPISTONS CYLINDERS SEALINGS

Current Industry

F16J9/00Piston-rings

Sub Industries

F16J9/02L-section rings F16J9/04Helical rings F16J9/06using separate springs or elastic elements expanding the rings Springs therefor; Expansion by wedging F16J9/061using metallic coiled or blade springs F16J9/062Coiled spring along the entire circonference F16J9/063Strip or wire along the entire circonference F16J9/064Rings with a flat annular side rail F16J9/065Spring expander with massive cross-section F16J9/066Spring expander from sheet metal F16J9/067corrugated in the radial direction F16J9/068corrugated in the axial direction F16J9/069with a "C"-shaped cross section along the entire circumference F16J9/08with expansion obtained by pressure of the medium F16J9/10Special members for adjusting the rings F16J9/12Details F16J9/14Joint-closures F16J9/145of spring expanders F16J9/16obtained by stacking of rings F16J9/18with separate bridge-elements F16J9/20Rings with special cross-section Oil-scraping rings F16J9/203Oil-scraping rings F16J9/206One-piece oil-scraping rings F16J9/22Rings for preventing wear of grooves or like seatings F16J9/24Members preventing rotation of rings in grooves F16J9/26characterised by the use of particular materials F16J9/28of non-metals
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Oil ring wire
    • Patent number 12,365,959
    • Issue date Jul 22, 2025
    • Tokusen Kogyo Co., Ltd.
    • Miho Fujino
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Helical dynamic seal ring
    • Patent number 12,344,369
    • Issue date Jul 1, 2025
    • Goodrich Corporation
    • Kyle M. Madey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring with hard plating, and preparation method therefor
    • Patent number 12,345,336
    • Issue date Jul 1, 2025
    • Asimco Shuanghuan Piston Ring (yizheng) Co., Ltd.
    • Kaishun Li
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring with variable pressure relief
    • Patent number 12,305,763
    • Issue date May 20, 2025
    • Federal-Mogul Burscheid GmbH
    • Döndü Karabel
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Functionally graded composite structures
    • Patent number 12,297,867
    • Issue date May 13, 2025
    • Dover Pumps & Process Solutions Segment, Inc.
    • Burak Bekisli
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Sliding element, in particular piston ring
    • Patent number 12,292,119
    • Issue date May 6, 2025
    • Federal-Mogul Burscheid GmbH
    • Gregor Englberger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring
    • Patent number 12,292,118
    • Issue date May 6, 2025
    • TPR CO., LTD.
    • Yushi Abe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    CRN coating film and sliding member
    • Patent number 12,281,380
    • Issue date Apr 22, 2025
    • TPR CO., LTD.
    • Syun Sugawara
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring and booster pump
    • Patent number 12,281,709
    • Issue date Apr 22, 2025
    • Mitsubishi Heavy Industries, Ltd.
    • Motoshi Harada
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Internal combustion engine with reduced oil maintenance
    • Patent number 12,276,235
    • Issue date Apr 15, 2025
    • Briggs & Stratton, LLC
    • Jacob Zuehl
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Internal combustion engine with means for condensation fluid removal
    • Patent number 12,253,047
    • Issue date Mar 18, 2025
    • Cornelis Margaretha Maria Nicolaas Rombouts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Split piston ring unit
    • Patent number 12,247,667
    • Issue date Mar 11, 2025
    • Mahle International GmbH
    • Petru M. Berghian
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cylinder device
    • Patent number 12,241,488
    • Issue date Mar 4, 2025
    • HITACHI ASTEMO, LTD.
    • Andrew Feldkamp
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Seal assembly for a rotary valve
    • Patent number 12,234,927
    • Issue date Feb 25, 2025
    • MICROTECNICA S.R.L.
    • Andrea Mornacchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring arrangement, piston compressor and method for sealing a...
    • Patent number 12,222,037
    • Issue date Feb 11, 2025
    • Burckhardt Compression AG
    • David Flood
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Resin composition, molded article, and automatic transmission
    • Patent number 12,215,219
    • Issue date Feb 4, 2025
    • Daikin Industries, Ltd.
    • Keisuke Hagi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Piston ring for a piston compressor
    • Patent number 12,209,670
    • Issue date Jan 28, 2025
    • Burckhardt Compression AG
    • Norbert Feistel
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Wear-resistant and low-friction coated piston ring and preparation...
    • Patent number 12,203,553
    • Issue date Jan 21, 2025
    • Asimco Shuanghuan Piston Ring (yizheng) Co., Ltd.
    • Weiwei Shi
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Dual-peak static seal for hydraulic device
    • Patent number 12,196,324
    • Issue date Jan 14, 2025
    • Caterpillar Inc.
    • Ananda Sudhakar Ponnusamy
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Compression ring
    • Patent number 12,196,325
    • Issue date Jan 14, 2025
    • TPR CO., LTD.
    • Takashi Ozawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sealing ring assemblies configured for pressure locking
    • Patent number 12,188,457
    • Issue date Jan 7, 2025
    • Mainspring Energy, Inc.
    • Matt Svrcek
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston ring, and method for manufacturing same
    • Patent number 12,188,564
    • Issue date Jan 7, 2025
    • Hiroki Saito
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Using silicone o-rings in dual action irrigation pump
    • Patent number 12,188,469
    • Issue date Jan 7, 2025
    • BIOSENSE WEBSTER (ISRAEL) LTD.
    • Yehuda Algawi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil control ring
    • Patent number 12,173,799
    • Issue date Dec 24, 2024
    • TPR CO., LTD.
    • Akira Hikone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Oil control ring
    • Patent number 12,163,592
    • Issue date Dec 10, 2024
    • Federal-Mogul Burscheid GmbH
    • Thomas Bastuck
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self-lubricating, wear resistant piston seal
    • Patent number 12,158,210
    • Issue date Dec 3, 2024
    • RTX Corporation
    • Kelly M. Harrington
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring and method of manufacture
    • Patent number 12,123,500
    • Issue date Oct 22, 2024
    • Mahle International GmbH
    • Jose Valentim Lima Sarabanda
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Combination of piston rings, and combination structure of piston an...
    • Patent number 12,117,084
    • Issue date Oct 15, 2024
    • TPR CO., LTD.
    • Hiroyuki Nagakura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring
    • Patent number 12,117,085
    • Issue date Oct 15, 2024
    • Mahle International GmbH
    • Bruno Fineto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring combination, and internal combustion engine
    • Patent number 12,092,222
    • Issue date Sep 17, 2024
    • TPR CO., LTD.
    • Akira Hikone
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    COKE SCRAPING RING, CYLINDER LINER, CYLINDER, GAS ENGINE AND GAS EN...
    • Publication number 20250230778
    • Publication date Jul 17, 2025
    • CATERPILLAR ENERGY SOLUTIONS GMBH
    • Olaf BERGER
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    LIGHT WEIGHT HYBRID PISTON SEAL RING
    • Publication number 20250224034
    • Publication date Jul 10, 2025
    • RTX Corporation
    • Hamidreza Mohseni
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING WITH HARD PLATING, AND PREPARATION METHOD THEREFOR
    • Publication number 20250215974
    • Publication date Jul 3, 2025
    • Asimco Shuanghuan Piston Ring (yizheng) Co., Ltd.
    • Kaishun LI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    System And Method For Protecting A Hydraulic System Of A Work Machine
    • Publication number 20250198432
    • Publication date Jun 19, 2025
    • Komatsu America Corp.
    • Greggory Mann
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    PISTON RING ASSEMBLY
    • Publication number 20250198513
    • Publication date Jun 19, 2025
    • MAHLE International GmbH
    • Rui Moreira
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING ASSEMBLY
    • Publication number 20250198512
    • Publication date Jun 19, 2025
    • MAHLE International GmbH
    • Rui Moreira
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Two-Stroke Engine, Lubrication Device, and Cylinder
    • Publication number 20250188855
    • Publication date Jun 12, 2025
    • Marco Antonio Moté Soares
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    COMPRESSOR
    • Publication number 20250188921
    • Publication date Jun 12, 2025
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Kosuke SUDO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INTERNAL COMBUSTION ENGINE WITH MEANS FOR CONDENSATION FLUID REMOVAL
    • Publication number 20250179971
    • Publication date Jun 5, 2025
    • Cornelis Margaretha Maria Nicolaas Rombouts
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    SLIDING MECHANISM
    • Publication number 20250180117
    • Publication date Jun 5, 2025
    • Kabushiki Kaisha Riken
    • Satoshi ISHIDA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INTERNAL COMBUSTION ENGINE
    • Publication number 20250172105
    • Publication date May 29, 2025
    • Isuzu Motors Limited
    • Takuro MITA
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    PISTON RING
    • Publication number 20250129847
    • Publication date Apr 24, 2025
    • Kabushiki Kaisha Riken
    • Junya TAKAHASHI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Piston Ring
    • Publication number 20250116331
    • Publication date Apr 10, 2025
    • TPR CO., LTD.
    • Yushi Abe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Piston Unit, Top Land Member, and Combination of Piston Unit Parts
    • Publication number 20250109722
    • Publication date Apr 3, 2025
    • TPR CO., LTD.
    • Hiroyuki Nagakura
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    PISTON RING AND INTERNAL COMBUSTION ENGINE
    • Publication number 20250102062
    • Publication date Mar 27, 2025
    • MAHLE International GmbH
    • Rafael Rabello
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RINGS AND BARREL SLEEVES
    • Publication number 20250075794
    • Publication date Mar 6, 2025
    • HAMILTON SUNDSTRAND CORPORATION
    • Jecee Jarman
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PISTON SEALING RING ASSEMBLY HAVING A GAP COVER ELEMENT
    • Publication number 20250067340
    • Publication date Feb 27, 2025
    • Mainspring Energy, Inc.
    • Jodie Prudhomme
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON SEALING RING ASSEMBLIES
    • Publication number 20250060035
    • Publication date Feb 20, 2025
    • Mainspring Energy, Inc.
    • Matt Svrcek
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING AND PISTON RING SET
    • Publication number 20250052320
    • Publication date Feb 13, 2025
    • Kabushiki Kaisha Riken
    • Takeshi YAMADA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING
    • Publication number 20250027564
    • Publication date Jan 23, 2025
    • HAMILTON SUNDSTRAND CORPORATION
    • Jecee Jarman
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPOSITE HARD CHROME PLATING
    • Publication number 20250019854
    • Publication date Jan 16, 2025
    • DIC CORPORATION
    • Ryo KANDA
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Application

    DUAL-PEAK STATIC SEAL FOR HYDRAULIC DEVICE
    • Publication number 20250020208
    • Publication date Jan 16, 2025
    • Caterpillar Inc.
    • Ananda Sudhakar Ponnusamy
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING AND METHOD OF MANUFACTURE
    • Publication number 20250012358
    • Publication date Jan 9, 2025
    • MAHLE International GmbH
    • Jose Valentim Lima Sarabanda
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING
    • Publication number 20240418262
    • Publication date Dec 19, 2024
    • MAHLE Automotive Technologies (China) Co., Ltd.
    • Shaobo Zeng
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FUNCTIONALLY GRADED COMPOSITE STRUCTURES
    • Publication number 20240410424
    • Publication date Dec 12, 2024
    • Dover Pumps & Process Solutions Segment, Inc.
    • Burak Bekisli
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    PISTON RING HAVING A WEAR PROTECTION LAYER CONTAINING PARTICLES, ME...
    • Publication number 20240384791
    • Publication date Nov 21, 2024
    • FEDERAL-MOGUL BURSCHEID GMBH
    • Stefan Dürdoth
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Application

    Compression Ring Having Butt Seal, and Method
    • Publication number 20240376982
    • Publication date Nov 14, 2024
    • FEDERAL-MOGUL BURSCHEID GMBH
    • Peter Schmidt
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SPLIT PISTON RING UNIT
    • Publication number 20240376981
    • Publication date Nov 14, 2024
    • MAHLE International GmbH
    • Petru M. Berghian
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COATING FOR A PISTON RING
    • Publication number 20240376983
    • Publication date Nov 14, 2024
    • MAHLE International GmbH
    • Fabio Mendes de Araujo
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    GIFFORD-MCMAHON (GM) CRYOCOOLER FIRST-STAGE DISPLACER, FIRST-STAGE...
    • Publication number 20240377108
    • Publication date Nov 14, 2024
    • Sumitomo Heavy Industries, Ltd.
    • Hisao KAWAKAMI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...