starting from sheet material

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of bending pipe and apparatus therefor

    • Patent number 7,140,225
    • Issue date Nov 28, 2006
    • Yutaka Giken Co., Ltd.
    • Hiroyuki Takahashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for manufacturing a header pipe

    • Patent number 6,374,865
    • Issue date Apr 23, 2002
    • Calsonic Kansei Corporation
    • Seiji Mashiko
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for manufacturing a header pipe

    • Patent number 6,324,761
    • Issue date Dec 4, 2001
    • Calsonic Kansei Corporation
    • Seiji Mashiko
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for manufacturing a header pipe

    • Patent number 6,266,858
    • Issue date Jul 31, 2001
    • Calsoni Corporation
    • Seiji Mashiko
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for fabricating a seamless H.V.A.C. trunk line adaptor

    • Patent number 6,176,013
    • Issue date Jan 23, 2001
    • Green Street, Ltd.
    • Luigi E. Lucente
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Producing of tapered bent tube

    • Patent number 6,153,029
    • Issue date Nov 28, 2000
    • Wei-Fu Lin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for fabricating a seamless H.V.A.C. trunk line adaptor

    • Patent number 5,933,954
    • Issue date Aug 10, 1999
    • Green Street, Inc.
    • Luigi E. Lucente
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for making a manifold for an automotive heat exchanger

    • Patent number 5,743,122
    • Issue date Apr 28, 1998
    • Eugene E. Rhodes
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of making a curved pipe

    • Patent number 5,014,424
    • Issue date May 14, 1991
    • Kabushiki Kaisha Okada Seisakusho
    • Tamotsu Takasugi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Helically wound elbow conduit and method of fabricating same

    • Patent number 4,841,616
    • Issue date Jun 27, 1989
    • The Charles Stark Draper Laboratory, Inc.
    • Daniel E. Whitney
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for making connecting pipes for connecting ducts

    • Patent number 4,704,885
    • Issue date Nov 10, 1987
    • Ariyoshi Nakamura
    • Kenji Nakajima
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for the manufacture of a pipe bend

    • Patent number 4,554,816
    • Issue date Nov 26, 1985
    • Mannesmann Aktiengesellschaft A.G.
    • Erich Stender
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for forming a heat shield plate

    • Patent number 4,328,696
    • Issue date May 11, 1982
    • Maremont Corporation
    • Charles J. Gonwa
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Machine for forming curved conduits

    • Patent number 4,287,742
    • Issue date Sep 8, 1981
    • John H. Heiman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus and method for internally weld-cladding pipe elbows

    • Patent number 4,253,006
    • Issue date Feb 24, 1981
    • Sulzer Brothers Limited
    • Alfred Ludwig
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Sheet metal drafting device

    • Patent number 4,215,481
    • Issue date Aug 5, 1980
    • Robert L. Riley
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Formation of radius elbows and O.G. sets

    • Patent number 4,210,090
    • Issue date Jul 1, 1980
    • Potomac Applied Mechanics, Inc.
    • James H. Stubbings
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process for forming curved hollow elements and an apparatus for car...

    • Patent number 4,205,546
    • Issue date Jun 3, 1980
    • Spiro Investment S.A.
    • Paul-Emile H. Lagasse
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Drawing die for making a pipe elbow

    • Patent number 4,192,170
    • Issue date Mar 11, 1980
    • Josef Ferwagner
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for the fabrication of internally weld-cladded pipe elbows

    • Patent number 4,165,245
    • Issue date Aug 21, 1979
    • Sulzer Brothers Limited
    • Alfred Ludwig
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Tool for forming pipe from sheet metal

    • Patent number 3,977,228
    • Issue date Aug 31, 1976
    • Josef Ferwagner
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3899819

    • Patent number 3,899,819
    • Issue date Aug 19, 1975
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3848308

    • Patent number 3,848,308
    • Issue date Nov 19, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3833985

    • Patent number 3,833,985
    • Issue date Sep 10, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3807009

    • Patent number 3,807,009
    • Issue date Apr 30, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3802245

    • Patent number 3,802,245
    • Issue date Apr 9, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2335887

    • Patent number 2,335,887
    • Issue date Dec 7, 1943
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2254117

    • Patent number 2,254,117
    • Issue date Aug 26, 1941
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2192471

    • Patent number 2,192,471
    • Issue date Mar 5, 1940
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2004491

    • Patent number 2,004,491
    • Issue date Jun 11, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS FOR MAKING AN ADAPTOR WHICH IS USED IN HEATING AND VENTIL...

    • Publication number 20150096347
    • Publication date Apr 9, 2015
    • Roux William Roger Young
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    ONE-PIECE HALF FITTING FOR AN INSULATED PIPE

    • Publication number 20110198839
    • Publication date Aug 18, 2011
    • Jeffrey H. Webb
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    ELBOW FORMATION APPARATUS

    • Publication number 20100170318
    • Publication date Jul 8, 2010
    • FORMTEK, INC.
    • MATTHEW LAWLER
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method of bending pipe and apparatus therefor

    • Publication number 20050172692
    • Publication date Aug 11, 2005
    • YUTAKA GIKEN CO., LTD.
    • Hiroyuki Takahashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...