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Bending or deforming ends of coil springs to special shape

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  • CPC
  • B21F35/02
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21FWORKING OR PROCESSING OF METAL WIRE B21F35/00Making springs from wire

Current Industry

B21F35/02Bending or deforming ends of coil springs to special shape
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Hollow coil spring and suspension device for vehicle
    • Patent number 11,685,211
    • Issue date Jun 27, 2023
    • NHK Spring Co., Ltd.
    • Masahiro Umezawa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Canted coil springs and assemblies and related methods
    • Patent number 11,235,374
    • Issue date Feb 1, 2022
    • Bal Seal Engineering, LLC
    • Peter J. Balsells
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring manufacturing machine with selectable configuration for proc...
    • Patent number 11,072,020
    • Issue date Jul 27, 2021
    • PLUSPRINGS MACHINERY CO., LTD
    • Ching-Fa Yang
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device and method for forming end of coiled spring
    • Patent number 10,828,690
    • Issue date Nov 10, 2020
    • Mitsubishi Steel Mfg. Co., Ltd.
    • Takashi Eto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Canted coil springs and assemblies and related methods
    • Patent number 10,668,521
    • Issue date Jun 2, 2020
    • Bal Seal Engineering, LLC
    • Peter J. Balsells
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method for press-rolling a timepiece mainspring
    • Patent number 10,456,825
    • Issue date Oct 29, 2019
    • Nivarox-Far S.A.
    • Jonas Vannod
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coil spring forming method and forming device
    • Patent number 10,022,778
    • Issue date Jul 17, 2018
    • Chuo Hatsujo Kabushiki Kaisha
    • Takashi Goto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spiral spring manufacturing method
    • Patent number 9,782,819
    • Issue date Oct 10, 2017
    • Suncall Corporation
    • Ryuji Kishihara
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Bending device and spring manufacturing machine
    • Patent number 9,682,417
    • Issue date Jun 20, 2017
    • Shinko Machinery Co., Ltd.
    • Isao Kido
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device and method for forming end of coiled spring
    • Patent number 8,915,112
    • Issue date Dec 23, 2014
    • Mitsubishi Steel Mfg. Co., Ltd.
    • Takashi Eto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device for producing a loop on one end of a coil spring
    • Patent number 8,893,751
    • Issue date Nov 25, 2014
    • Wafios Aktiengesellschaft
    • Oliver Kuhnert
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Variable canted coil spring cross section
    • Patent number 8,753,153
    • Issue date Jun 17, 2014
    • Bal Seal Engineering, Inc.
    • Gordon Leon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Variable canted coil spring cross section
    • Patent number 8,590,867
    • Issue date Nov 26, 2013
    • Bal Seal Engineering, Inc.
    • Gordon Leon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for producing an end lug of a spring member formed of a stra...
    • Patent number 7,334,445
    • Issue date Feb 26, 2008
    • Wafios Aktiengesellschaft
    • Norbert Speck
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Cassette pigtailing machine for a coil spring
    • Patent number 7,198,068
    • Issue date Apr 3, 2007
    • Meritor Suspension Systems Co.
    • Jeffrey Paul Dixon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device for orienting springs
    • Patent number 7,086,425
    • Issue date Aug 8, 2006
    • Spuhl AG St. Gallen
    • Urs Widmer
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Wire spring forming apparatus
    • Patent number 7,024,901
    • Issue date Apr 11, 2006
    • Orii & Mec Corporation
    • Sinichi Yamaguchi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Mold head device of spring forming machine
    • Patent number 6,817,220
    • Issue date Nov 16, 2004
    • Shin Chuau HWA Co., Ltd.
    • Tsun-Te Liu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device for bending an extremity of a torsional spring
    • Patent number 6,681,809
    • Issue date Jan 27, 2004
    • Canimex Inc.
    • Normand Savard
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring manufacturing apparatus
    • Patent number 6,151,942
    • Issue date Nov 28, 2000
    • Kabushiki Kaisha Itaya Seisaku Sho
    • Ichiro Itaya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring manufacturing apparatus and tool selection apparatus
    • Patent number 6,142,002
    • Issue date Nov 7, 2000
    • Kabushiki Kaisha Itaya Seisaku Sho
    • Ichiro Itaya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Auxiliary bending device for a spring-making machine
    • Patent number 5,860,308
    • Issue date Jan 19, 1999
    • Chin-Tu Wu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for cutting and crimping coil
    • Patent number 5,823,233
    • Issue date Oct 20, 1998
    • Unicoil, Inc.
    • David C. McHenry
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Wire forming apparatus
    • Patent number 5,732,583
    • Issue date Mar 31, 1998
    • Kabushiki Kaisha Itaya Seisaku Sho
    • Ichiro Itaya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Device for bending the ends of metallic binding spirals
    • Patent number 5,497,811
    • Issue date Mar 12, 1996
    • Rilecart S.R.L.
    • Daniele P. Pigna
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring toe forming device and method
    • Patent number 5,454,249
    • Issue date Oct 3, 1995
    • Reell Precision Manufacturing Corporation
    • Mark A. Kempf
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Auxiliary spring bending machine
    • Patent number 5,415,208
    • Issue date May 16, 1995
    • Chin-Tu Wu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for forming wire
    • Patent number 5,105,641
    • Issue date Apr 21, 1992
    • WAFIOS Maschinenfabrik GmbH & Co. Kommanditgesellschaft
    • Gustav Veit
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coiled spring making apparatus
    • Patent number 5,025,648
    • Issue date Jun 25, 1991
    • MEC Machinery Co., Ltd.
    • Takeji Matsuoka
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for coiling springs with tucked ends
    • Patent number 4,986,103
    • Issue date Jan 22, 1991
    • Newcomb Spring Corp.
    • D. John Jacobson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents