Crankshafts

Patents Grantslast 30 patents

  • Information Patent Grant

    Twist-forming press for crank shaft or the like

    • Patent number 5,295,381
    • Issue date Mar 22, 1994
    • Sumitomo Heavy Industries, Ltd.
    • Junji Nishikawa
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Torsional molding apparatus for crank shaft

    • Patent number 4,580,430
    • Issue date Apr 8, 1986
    • Honda Giken Kogyo Kabushiki Kaisha
    • Kunio Takeda
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2859793

    • Patent number 2,859,793
    • Issue date Nov 11, 1958
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2843176

    • Patent number 2,843,176
    • Issue date Jul 15, 1958
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2542050

    • Patent number 2,542,050
    • Issue date Feb 20, 1951
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2414549

    • Patent number 2,414,549
    • Issue date Jan 21, 1947
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2044170

    • Patent number 2,044,170
    • Issue date Jun 16, 1936
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2018931

    • Patent number 2,018,931
    • Issue date Oct 29, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1991567

    • Patent number 1,991,567
    • Issue date Feb 19, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1954281

    • Patent number 1,954,281
    • Issue date Apr 10, 1934
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1890635

    • Patent number 1,890,635
    • Issue date Dec 13, 1932
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1779017

    • Patent number 1,779,017
    • Issue date Oct 21, 1930
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1778879

    • Patent number 1,778,879
    • Issue date Oct 21, 1930
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1756634

    • Patent number 1,756,634
    • Issue date Apr 29, 1930
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1680769

    • Patent number 1,680,769
    • Issue date Aug 14, 1928
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1553638

    • Patent number 1,553,638
    • Issue date Sep 15, 1925
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...