TREA

of interconnected helical springs

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Industry

  • CPC
  • B21F3/12
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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

B21F3/12of interconnected helical springs
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Wire forming apparatus
    • Patent number 11,590,557
    • Issue date Feb 28, 2023
    • KABUSHIKI KAISHA ITAYA SEISAKU SHO
    • Kenji Kanazawa
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus and method for manufacturing coil screens
    • Patent number 10,105,800
    • Issue date Oct 23, 2018
    • Karl Mayer Textilmaschinenfabrik GmbH
    • Michael Ruh
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Wire forming apparatus
    • Patent number 9,718,114
    • Issue date Aug 1, 2017
    • KABUSHIKI KAISHA ITAYA SEISAKU SHO
    • Ichiro Itaya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Coil springs with complex coil configurations, assemblies with coil...
    • Patent number 9,273,742
    • Issue date Mar 1, 2016
    • Bal Seal Engineering, Inc.
    • Peter J. Balsells
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus and method for the manufacture of a spring unit
    • Patent number 8,371,147
    • Issue date Feb 12, 2013
    • Howard Martin Dixon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus and method for the manufacture of a spring unit
    • Patent number 8,091,398
    • Issue date Jan 10, 2012
    • Howard Martin Dixon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spring manufacturing apparatus and manufacturing method of the same
    • Patent number 5,887,471
    • Issue date Mar 30, 1999
    • Kabushiki Kaisha Itaya Seisaku Sho
    • Ichiro Itaya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Programmable servo-motor quality controlled continuous multiple coi...
    • Patent number 5,875,664
    • Issue date Mar 2, 1999
    • L&P Property Management Company
    • Terence A. Scott
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Continuous coil spring forming method
    • Patent number 5,105,642
    • Issue date Apr 21, 1992
    • L&P Property Management Company
    • Henry G. Mohr
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Box spring having rows of coil springs formed from a single length...
    • Patent number 4,766,625
    • Issue date Aug 30, 1988
    • Leggett & Platt, Incorporated
    • Chester R. Yates
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Mattress assembly having rows of coil springs formed from a single...
    • Patent number 4,766,624
    • Issue date Aug 30, 1988
    • Leggett & Platt, Incorporated
    • Chester R. Yates
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for forming a row of spring coils from a conti...
    • Patent number 4,726,106
    • Issue date Feb 23, 1988
    • Leggett & Platt, Incorporated
    • Henry G. Mohr
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for manufacturing spring units
    • Patent number 4,713,956
    • Issue date Dec 22, 1987
    • France Bed Co., Ltd.
    • Noboru Sasaki
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Bedding and seating product having double twist coil spring and met...
    • Patent number 4,682,394
    • Issue date Jul 28, 1987
    • Leggett & Platt, Incorporated
    • Thomas J. Wells
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Bedding and seating product having double twist coil spring and met...
    • Patent number 4,639,957
    • Issue date Feb 3, 1987
    • Leggett & Platt, Incorporated
    • Thomas J. Wells
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for manufacturing spring unit
    • Patent number 4,622,839
    • Issue date Nov 18, 1986
    • France Bed Co., Ltd.
    • Noboru Sasaki
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Wire forming apparatus
    • Patent number 4,592,223
    • Issue date Jun 3, 1986
    • Silentnight Holdings PLC
    • Arnold Woffendin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for the manufacture of a microwave delay line and microwave...
    • Patent number 4,313,474
    • Issue date Feb 2, 1982
    • Thomson-CSF
    • Rene Nazet
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of producing a continuous flexible tubular conduit
    • Patent number 4,207,127
    • Issue date Jun 10, 1980
    • Dayco Corporation
    • Philip K. Loyer
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Apparatus for producing a continuous flexible tubular conduit
    • Patent number 4,135,869
    • Issue date Jan 23, 1979
    • Dayco Corporation
    • Philip K. Loyer
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method and apparatus for forming a row of spring coils from a conti...
    • Patent number 4,112,726
    • Issue date Sep 12, 1978
    • Leggett & Platt, Incorporated
    • Elvin E. Adams
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Wire coiling machine
    • Patent number 4,008,594
    • Issue date Feb 22, 1977
    • Hartwell Corporation
    • George Noyce
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3905403
    • Patent number 3,905,403
    • Issue date Sep 16, 1975
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3740984
    • Patent number 3,740,984
    • Issue date Jun 26, 1973
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3677054
    • Patent number 3,677,054
    • Issue date Jul 18, 1972
    • 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

    3329177
    • Patent number 3,329,177
    • Issue date Jul 4, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3053288
    • Patent number 3,053,288
    • Issue date Sep 11, 1962
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2631840
    • Patent number 2,631,840
    • Issue date Mar 17, 1953
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2192260
    • Patent number 2,192,260
    • Issue date Mar 5, 1940
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents