TREA

internally on a hollow form

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Industry

  • CPC
  • B21F3/06
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21FWORKING OR PROCESSING OF METAL WIRE B21F3/00Coiling wire into particular forms

Current Industry

B21F3/06internally on a hollow form
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Coiling machine, method for manufacturing coil spring, and coil spring
    • Patent number 11,964,321
    • Issue date Apr 23, 2024
    • NHK Spring Co., Ltd.
    • Takeshi Furuse
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Servo-rotating all-function tool module for use with spring forming...
    • Patent number 10,618,098
    • Issue date Apr 14, 2020
    • Yao Ming Yang
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coiling machine and manufacturing method of coil spring
    • Patent number 10,556,265
    • Issue date Feb 11, 2020
    • NHK Spring Co., Ltd.
    • Takeshi Furuse
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Controlling device for coil spring bending tool and controlling met...
    • Patent number 10,350,669
    • Issue date Jul 16, 2019
    • Bingnan Lin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Wire forming machine
    • Patent number 10,286,435
    • Issue date May 14, 2019
    • ASAHI-SEIKI MANUFACTURING CO., LTD.
    • Takashi Nojima
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring forming device and forming method therefor
    • Patent number 10,052,677
    • Issue date Aug 21, 2018
    • NHK Spring Co., Ltd.
    • Keita Takahashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Hot formed coiling machine
    • Patent number 9,744,584
    • Issue date Aug 29, 2017
    • Dae Won Kang Up Co., Ltd.
    • Chan-Gi Jung
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Wire-forming mechanism for spring making machine
    • Patent number 9,700,932
    • Issue date Jul 11, 2017
    • PLUSPRINGS MACHINERY CO.,LTD
    • Ching-Fa Yang
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for producing threaded parts
    • Patent number 9,500,217
    • Issue date Nov 22, 2016
    • Jörg Schwarzbich
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method and equipment for making a spring
    • Patent number 8,978,434
    • Issue date Mar 17, 2015
    • Ressorts Huon Dubois
    • Serge Huon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring-making machine
    • Patent number 5,791,184
    • Issue date Aug 11, 1998
    • Chin-Tu Wu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3612113
    • Patent number 3,612,113
    • Issue date Oct 12, 1971
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3600923
    • Patent number 3,600,923
    • Issue date Aug 24, 1971
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3576120
    • Patent number 3,576,120
    • Issue date Apr 27, 1971
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3555863
    • Patent number 3,555,863
    • Issue date Jan 19, 1971
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3481172
    • Patent number 3,481,172
    • Issue date Dec 2, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3402584
    • Patent number 3,402,584
    • Issue date Sep 24, 1968
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3401557
    • Patent number 3,401,557
    • Issue date Sep 17, 1968
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3378045
    • Patent number 3,378,045
    • Issue date Apr 16, 1968
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    3376722
    • Patent number 3,376,722
    • Issue date Apr 9, 1968
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3342052
    • Patent number 3,342,052
    • Issue date Sep 19, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3323340
    • Patent number 3,323,340
    • Issue date Jun 6, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3319447
    • Patent number 3,319,447
    • Issue date May 16, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3315509
    • Patent number 3,315,509
    • Issue date Apr 25, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3314453
    • Patent number 3,314,453
    • Issue date Apr 18, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3251384
    • Patent number 3,251,384
    • Issue date May 17, 1966
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3240238
    • Patent number 3,240,238
    • Issue date Mar 15, 1966
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3230985
    • Patent number 3,230,985
    • Issue date Jan 25, 1966
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3213660
    • Patent number 3,213,660
    • Issue date Oct 26, 1965
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3195338
    • Patent number 3,195,338
    • Issue date Jul 20, 1965
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents