for grinding the circumferential surface of rings

Patents Grantslast 30 patents

  • Information Patent Grant

    Piston ring having a stepped running surface

    • Patent number 11,187,322
    • Issue date Nov 30, 2021
    • Federal-Mogul Burscheid GmbH
    • Jurgen Gillen
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Piston ring

    • Patent number 10,006,546
    • Issue date Jun 26, 2018
    • Kabushiki Kaisha Riken
    • Masayuki Sato
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Methods and systems for marring fiber optic substrates

    • Patent number 8,641,478
    • Issue date Feb 4, 2014
    • Lumitex, Inc.
    • David B. Larson
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Methods and systems for marring fiber optic substrates

    • Patent number 8,029,337
    • Issue date Oct 4, 2011
    • Lumitex, Inc.
    • David B. Larson
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Methods and systems for marring fiber optic substrates

    • Patent number 7,833,087
    • Issue date Nov 16, 2010
    • Lumitex, Inc.
    • David B. Larson
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Method for the fine machining of piston rings and apparatus for car...

    • Patent number 5,775,978
    • Issue date Jul 7, 1998
    • AE Goetze GmbH
    • Manfred Brocksieper
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Apparatus for machining a concial ring

    • Patent number 5,464,364
    • Issue date Nov 7, 1995
    • Miba Sintermetall Aktiengesellschaft
    • Franz Roitner
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Oil ring assembly

    • Patent number 5,161,805
    • Issue date Nov 10, 1992
    • Kabushiki Kaisha Riken
    • Haruhito Watanabe
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Internal grinding machine

    • Patent number 4,527,357
    • Issue date Jul 9, 1985
    • Litton Industrial Products, Inc.
    • William E. Shank
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Apparatus for grinding finish of piston rings

    • Patent number 4,330,963
    • Issue date May 25, 1982
    • Kabushiki Kaisha Riken
    • Masahiko Wada
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Stressed internal face lapping tool

    • Patent number 4,302,909
    • Issue date Dec 1, 1981
    • Goetze AG
    • Hubert Dorner
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Piston ring honing

    • Patent number 4,209,951
    • Issue date Jul 1, 1980
    • Brammall, Inc.
    • Robert H. Gillette
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Method for grinding piston rings

    • Patent number 4,208,845
    • Issue date Jun 24, 1980
    • Dana Corporation
    • Robert L. Sharpe
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Piston ring honing

    • Patent number 4,207,708
    • Issue date Jun 17, 1980
    • Brammall, Inc.
    • Robert H. Gillette
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Piston ring assembly and method of making same

    • Patent number 4,123,072
    • Issue date Oct 31, 1978
    • Dana Corporation
    • Robert L. Sharpe
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Ring manufacture, productive of face contact seal

    • Patent number 3,971,165
    • Issue date Jul 27, 1976
    • International Harvester Company
    • Norman M. Packard
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3926166

    • Patent number 3,926,166
    • Issue date Dec 16, 1975
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3918211

    • Patent number 3,918,211
    • Issue date Nov 11, 1975
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3826508

    • Patent number 3,826,508
    • Issue date Jul 30, 1974
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3762107

    • Patent number 3,762,107
    • Issue date Oct 2, 1973
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3751784

    • Patent number 3,751,784
    • Issue date Aug 14, 1973
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3727927

    • Patent number 3,727,927
    • Issue date Apr 17, 1973
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3660945

    • Patent number 3,660,945
    • Issue date May 9, 1972
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3621617

    • Patent number 3,621,617
    • Issue date Nov 23, 1971
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3587155

    • Patent number 3,587,155
    • Issue date Jun 28, 1971
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3296747

    • Patent number 3,296,747
    • Issue date Jan 10, 1967
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3137019

    • Patent number 3,137,019
    • Issue date Jun 16, 1964
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3104504

    • Patent number 3,104,504
    • Issue date Sep 24, 1963
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2958985

    • Patent number 2,958,985
    • Issue date Nov 8, 1960
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2929174

    • Patent number 2,929,174
    • Issue date Mar 22, 1960
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents