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by bending the ends of the workpieces to abut

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  • B21L1/02
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BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21LMAKING METAL CHAINS B21L1/00Making chains or chain links by bending work-pieces of rod, wire, or strip to form links of oval or other simple shape

Current Industry

B21L1/02by bending the ends of the workpieces to abut
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of forming jewelry articles
    • Patent number 7,111,447
    • Issue date Sep 26, 2006
    • Avraham Moshe Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Lightweight OMEGA chain and improved method of manufacture
    • Patent number 6,968,671
    • Issue date Nov 29, 2005
    • Aurafin, LLC
    • Giuseppe A. Dal Monte
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Lightweight omega chain and improved method of manufacture
    • Patent number 6,895,737
    • Issue date May 24, 2005
    • Aurafin, LLC
    • Giuseppe A. Dal Monte
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Lightweight omega chain and improved method of manufacture
    • Patent number 6,860,097
    • Issue date Mar 1, 2005
    • Giuseppe A. Dal Monte
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Lightweight omega chain and improved method of manufacture
    • Patent number 6,745,554
    • Issue date Jun 8, 2004
    • Aurafin-Oro America, LLC
    • Giuseppe A. Dal Monte
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Jewelry link forming apparatus
    • Patent number 6,619,024
    • Issue date Sep 16, 2003
    • Kalman Strobel
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for producing oval chain links from round wire
    • Patent number 4,694,644
    • Issue date Sep 22, 1987
    • Wafios Maschinenfabrik GmbH & Co. KG
    • Willi Rudy
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process and apparatus for the production of oval chain links from r...
    • Patent number 4,680,926
    • Issue date Jul 21, 1987
    • WAFIOS Maschinenfabrik GmbH & Co. Kommanditgesellschaft
    • Gerhard Lange
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Wire link-forming and linking device
    • Patent number 4,380,145
    • Issue date Apr 19, 1983
    • Robert A. Morin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Machine for the formation of chains with links of two types
    • Patent number 4,311,003
    • Issue date Jan 19, 1982
    • Emmegizeta Metalmeccanica Gori & Zucchi M.G.Z. S.p.A.
    • Ezio Tega
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of bending a link blank into a chain link and a bending mach...
    • Patent number 4,209,978
    • Issue date Jul 1, 1980
    • Bulten-Kanthal AB
    • Sigge Johansson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Chain link bending machine
    • Patent number 4,163,363
    • Issue date Aug 7, 1979
    • Meyer, Roth & Pastor Maschinenfabrik GmbH
    • Herbert Windelbandt
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for bending chain links and chain link bending machine
    • Patent number 4,123,899
    • Issue date Nov 7, 1978
    • Meyer, Roth & Pastor Maschinenfabrik GmbH
    • Herbert Windelbandt
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3841088
    • Patent number 3,841,088
    • Issue date Oct 15, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3811268
    • Patent number 3,811,268
    • Issue date May 21, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3759034
    • Patent number 3,759,034
    • Issue date Sep 18, 1973
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3714776
    • Patent number 3,714,776
    • Issue date Feb 6, 1973
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3431723
    • Patent number 3,431,723
    • Issue date Mar 11, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2713765
    • Patent number 2,713,765
    • Issue date Jul 26, 1955
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2533325
    • Patent number 2,533,325
    • Issue date Dec 12, 1950
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2450396
    • Patent number 2,450,396
    • Issue date Sep 28, 1948
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2256265
    • Patent number 2,256,265
    • Issue date Sep 16, 1941
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1994794
    • Patent number 1,994,794
    • Issue date Mar 19, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1320777
    • Patent number 1,320,777
    • Issue date Nov 4, 1919
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1271165
    • Patent number 1,271,165
    • Issue date Jul 2, 1918
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1205233
    • Patent number 1,205,233
    • Issue date Nov 21, 1916
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1192778
    • Patent number 1,192,778
    • Issue date Jul 25, 1916
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1106439
    • Patent number 1,106,439
    • Issue date Aug 11, 1914
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1069041
    • Patent number 1,069,041
    • Issue date Jul 29, 1913
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1067876
    • Patent number 1,067,876
    • Issue date Jul 22, 1913
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents