TREA

Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding

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Industry

  • CPC
  • B21L7/00
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21LMAKING METAL CHAINS

Current Industry

B21L7/00Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of forming of jewelry with multiple links
    • Patent number 7,340,878
    • Issue date Mar 11, 2008
    • Avraham Rozenvasser
    • David Rozenvasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 7,143,571
    • Issue date Dec 5, 2006
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 6,993,896
    • Issue date Feb 7, 2006
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 6,945,028
    • Issue date Sep 20, 2005
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 6,918,242
    • Issue date Jul 19, 2005
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 6,904,746
    • Issue date Jun 14, 2005
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming chain links
    • Patent number 6,484,488
    • Issue date Nov 26, 2002
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Chain link, a jewelry chain and a method of forming the same by con...
    • Patent number 6,389,790
    • Issue date May 21, 2002
    • D & W Jewelry Inc. (NY Corporation)
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Jewelry rope chain cutting tool
    • Patent number 5,775,088
    • Issue date Jul 7, 1998
    • Robert Grosz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Chain link
    • Patent number 5,636,506
    • Issue date Jun 10, 1997
    • Stig-Rune Yngvesson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Fine jewelry diamond cut rope chain and method of manufacture thereof
    • Patent number 5,531,065
    • Issue date Jul 2, 1996
    • Rozenwasser; Avraham M.
    • David Rozenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Fine jewelry diamond cut rope chain and method of manufacturing same
    • Patent number 5,303,540
    • Issue date Apr 19, 1994
    • Rozenwasser; Avraham Moshe
    • David Rozenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and machine for the automatic formation of ornamental chains...
    • Patent number 5,152,133
    • Issue date Oct 6, 1992
    • I.C.M.S.r.l. Italiano Costruzioni Metalmeccaniche
    • Maruffl Pierino
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and machine for the formation of ornamental chains with cyli...
    • Patent number 5,092,120
    • Issue date Mar 3, 1992
    • Maruffi Pierino
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process for the automatic production of ornamental link chains
    • Patent number 4,972,670
    • Issue date Nov 27, 1990
    • C.M.S.S.p.A. Costruzione Macchine Speciali
    • Corrado Lapini
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process for the automatic production of ornamental link chains and...
    • Patent number 4,872,305
    • Issue date Oct 10, 1989
    • Costruzione Macchine Speciali C.M.S. srl
    • Corrado Lapini
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Machine for the manufacture of chains, in particular of the type kn...
    • Patent number 4,493,183
    • Issue date Jan 15, 1985
    • ICM S.p.A. Italiana Costruzioni Metalmeccaniche
    • Massimo Bucefari
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Machine and a method for constructing a chain having automatically...
    • Patent number 4,275,555
    • Issue date Jun 30, 1981
    • Gori & Zucchi S.p.A.
    • Pasquale Bichi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Link-making machine and method
    • Patent number 4,104,870
    • Issue date Aug 8, 1978
    • Albert Robbio
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3342029
    • Patent number 3,342,029
    • Issue date Sep 19, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2292637
    • Patent number 2,292,637
    • Issue date Aug 11, 1942
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1866837
    • Patent number 1,866,837
    • Issue date Jul 12, 1932
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    796916
    • Patent number 796,916
    • Issue date Aug 8, 1905
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    707750
    • Patent number 707,750
    • Issue date Aug 26, 1902
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    704185
    • Patent number 704,185
    • Issue date Jul 8, 1902
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    668614
    • Patent number 668,614
    • Issue date Feb 19, 1901
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    644991
    • Patent number 644,991
    • Issue date Mar 6, 1900
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    636157
    • Patent number 636,157
    • Issue date Oct 31, 1899
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    350612
    • Patent number 350,612
    • Issue date Oct 12, 1886
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    249871
    • Patent number 249,871
    • Issue date Nov 22, 1881
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    METHOD AND APPARATUS FOR FORMING JEWELRY CHAINS FORMED FROM LINKS
    • Publication number 20080196382
    • Publication date Aug 21, 2008
    • David ROZENVASSER
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming of jewelry with multiple links
    • Publication number 20060230740
    • Publication date Oct 19, 2006
    • David Rozenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20050268592
    • Publication date Dec 8, 2005
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20040074221
    • Publication date Apr 22, 2004
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20030110756
    • Publication date Jun 19, 2003
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20020104307
    • Publication date Aug 8, 2002
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20020095930
    • Publication date Jul 25, 2002
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of forming chain links
    • Publication number 20020056267
    • Publication date May 16, 2002
    • David Rosenwasser
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...