Fixed frogs made of one part or composite

Industry

  • CPC
  • E01B7/12
This industry / category may be too specific. Please go to a parent level for more data

Patents Grantslast 30 patents

  • Information Patent Grant

    Special trackwork assembly

    • Patent number 10,487,456
    • Issue date Nov 26, 2019
    • Polycorp Ltd.
    • Masoud Ansari
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Double frog for track crossings

    • Patent number 9,487,920
    • Issue date Nov 8, 2016
    • VOESTALPINE WEICHENSYSTEME GMBH
    • Alfred Lang
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Flange bearing frog crossing

    • Patent number 8,870,128
    • Issue date Oct 28, 2014
    • Cleveland Track Material, Inc.
    • Daniel Voelkerding
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Flange bearing frog crossing

    • Patent number 8,870,129
    • Issue date Oct 28, 2014
    • Cleveland Track Material, Inc.
    • Daniel Voelkerding
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Special track assembly and methods of making same

    • Patent number 8,714,462
    • Issue date May 6, 2014
    • Polycorp Ltd.
    • W. Bradley Bedford
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Grooved rail core piece

    • Patent number 7,309,050
    • Issue date Dec 18, 2007
    • BWG GmbH & Co., KG
    • Fridbert Heinze
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Railroad crossing apparatus having improved rail connection and imp...

    • Patent number 6,994,299
    • Issue date Feb 7, 2006
    • CMI-Promex, Inc.
    • Gerald Marron
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Replaceable point frog

    • Patent number 6,758,445
    • Issue date Jul 6, 2004
    • Vae Nortrak North America Inc.
    • Gary Click
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Railway frog wear component

    • Patent number 6,732,980
    • Issue date May 11, 2004
    • Progress Rail Services Corp.
    • Russell R. Hein
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Railroad frog for switch points and crossings

    • Patent number 6,340,140
    • Issue date Jan 22, 2002
    • Oswald Lochschmidt
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Frog insert and assembly and method for making frog assembly

    • Patent number 6,266,866
    • Issue date Jul 31, 2001
    • VAE Nortak North America Inc.
    • Jacqueline Ramirez
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Direct support frog assembly

    • Patent number 5,653,408
    • Issue date Aug 5, 1997
    • ABC Rail Products Corporation
    • Stephen R. Kuhn
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Swing nose frog switch point adjuster

    • Patent number 5,527,005
    • Issue date Jun 18, 1996
    • Union Switch & Signal Inc.
    • Leonard M. Wydotis
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Rail section

    • Patent number 5,522,570
    • Issue date Jun 4, 1996
    • BWG Butzbacher Weichenbau GmbH
    • Sebastian Benenowski
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Railway switch heel block

    • Patent number 4,283,030
    • Issue date Aug 11, 1981
    • Bethlehem Steel Corporation
    • Frank P. Bobb
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Method of joining frogs of wear-resisting manganese steel castings...

    • Patent number 4,169,745
    • Issue date Oct 2, 1979
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Alfred Moser
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Railroad frogs

    • Patent number 4,081,162
    • Issue date Mar 28, 1978
    • Abex Corporation
    • Earl E. Frank
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Process for reconditioning worn frogs

    • Patent number 3,976,239
    • Issue date Aug 24, 1976
    • Elektro-Thermit GmbH.
    • Herbert Finck
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3764802

    • Patent number 3,764,802
    • Issue date Oct 9, 1973
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3755670

    • Patent number 3,755,670
    • Issue date Aug 28, 1973
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3480072

    • Patent number 3,480,072
    • Issue date Nov 25, 1969
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3395276

    • Patent number 3,395,276
    • Issue date Jul 30, 1968
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3378683

    • Patent number 3,378,683
    • Issue date Apr 16, 1968
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3263076

    • Patent number 3,263,076
    • Issue date Jul 26, 1966
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3022968

    • Patent number 3,022,968
    • Issue date Feb 27, 1962
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2853260

    • Patent number 2,853,260
    • Issue date Sep 23, 1958
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2739772

    • Patent number 2,739,772
    • Issue date Mar 27, 1956
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2427830

    • Patent number 2,427,830
    • Issue date Sep 23, 1947
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2335994

    • Patent number 2,335,994
    • Issue date Dec 7, 1943
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2148940

    • Patent number 2,148,940
    • Issue date Feb 28, 1939
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents