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in annular parts

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  • CPC
  • B21D28/30
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BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING METAL B21D28/00Shaping by press-cutting Perforating

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B21D28/30in annular parts
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tool-transition-free machining method and clamp for wheel outer rim
    • Patent number 11,072,014
    • Issue date Jul 27, 2021
    • CITIC Dicastal CO., LTD.
    • Zuo Xu
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Grounding spacer
    • Patent number 10,784,596
    • Issue date Sep 22, 2020
    • A.K. Stamping Company, Inc.
    • Mark Andrews
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Grounding spacer
    • Patent number 10,615,520
    • Issue date Apr 7, 2020
    • A.K. Stamping Company, Inc.
    • Mark Andrews
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Grounding spacer
    • Patent number 9,643,230
    • Issue date May 9, 2017
    • A.K. Stamping Company, Inc.
    • Mark Andrews
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of manufacturing the outer retainer of a one way clutch that...
    • Patent number 8,286,353
    • Issue date Oct 16, 2012
    • NSK-Warner K.K.
    • Toshio Nagata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus and method for providing pockets in a roller cage of a be...
    • Patent number 5,899,131
    • Issue date May 4, 1999
    • SKF GmbH
    • Peter Benkert
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device for punching holes in a bicycle rim
    • Patent number 5,896,796
    • Issue date Apr 27, 1999
    • Chen-Keng Chih
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for making nipple holes in a double-walled hol...
    • Patent number 5,829,299
    • Issue date Nov 3, 1998
    • Holland Mechanics B.V.
    • Jasper Johannes Wessels
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Double action hydraulic container domer
    • Patent number 5,768,932
    • Issue date Jun 23, 1998
    • Roger A. Hahn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Deep-drawn stamping process including side piercing
    • Patent number 5,761,949
    • Issue date Jun 9, 1998
    • Trans-Matic Manufacturing Company
    • Ronald M. Dalessandro
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for reforming can bottom to provide improved s...
    • Patent number 5,697,242
    • Issue date Dec 16, 1997
    • American National Can Company
    • Andrew Halasz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Punch press machine
    • Patent number 5,553,525
    • Issue date Sep 10, 1996
    • Solar Turbines Incorporated
    • Desmond Mailey
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for reforming can bottom to provide improved s...
    • Patent number 5,540,352
    • Issue date Jul 30, 1996
    • American National Can Company
    • Andrew Halasz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for processing containers
    • Patent number 5,349,837
    • Issue date Sep 27, 1994
    • Andrew Halasz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for reforming can bottom to provide improved s...
    • Patent number 5,222,385
    • Issue date Jun 29, 1993
    • American National Can Company
    • Andrew Halasz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Valve hole punching apparatus for a wheel
    • Patent number 4,854,201
    • Issue date Aug 8, 1989
    • Topy Kogyo Kabushiki Kaisha
    • Yusaku Shinozawa
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Piercing die
    • Patent number 4,802,393
    • Issue date Feb 7, 1989
    • Ecological Systems, Inc.
    • Henry Gruchalski
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for punching a cylindrical tube
    • Patent number 4,750,393
    • Issue date Jun 14, 1988
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Hiroshi Yamagata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for making a composite engine cylinder block with preformed...
    • Patent number 4,700,444
    • Issue date Oct 20, 1987
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Hiroshi Yamagata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for making a composite cylinder block
    • Patent number 4,637,110
    • Issue date Jan 20, 1987
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Hiroshi Yamagata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Trimming and piercing apparatus
    • Patent number 4,392,400
    • Issue date Jul 12, 1983
    • Honda Giken Kogyo Kabushiki Kaisha
    • Masaru Sasagawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Punching apparatus
    • Patent number 4,164,158
    • Issue date Aug 14, 1979
    • Rolf Peddinghaus
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Piercing apparatus
    • Patent number 4,128,028
    • Issue date Dec 5, 1978
    • Springfield Tool & Die, Inc.
    • Jan C. Knibbe
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Piercing and flanging apparatus
    • Patent number 4,073,176
    • Issue date Feb 14, 1978
    • William A. Paul
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Piercing apparatus
    • Patent number 4,038,894
    • Issue date Aug 2, 1977
    • Springfield Tool & Die, Inc.
    • Jan C. Knibbe
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Piercing apparatus
    • Patent number 3,991,641
    • Issue date Nov 16, 1976
    • Springfield Tool & Die, Inc.
    • Jan C. Knibbe
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3835744
    • Patent number 3,835,744
    • Issue date Sep 17, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3831955
    • Patent number 3,831,955
    • Issue date Aug 27, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3820369
    • Patent number 3,820,369
    • Issue date Jun 28, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3811172
    • Patent number 3,811,172
    • Issue date May 21, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents