TREA

Drawbridges

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Industry

  • CPC
  • E01D15/08
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Parent Industries

EFIXED CONSTRUCTIONS E01Road, railway construction E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS ASSEMBLY OF BRIDGES E01D15/00Movable or portable bridges Floating bridges

Current Industry

E01D15/08Drawbridges
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Gangway having self-raising assembly
    • Patent number 11,993,471
    • Issue date May 28, 2024
    • Safe Rack LLC
    • John Rutledge Lawson
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Gangway having self-raising assembly
    • Patent number 11,685,618
    • Issue date Jun 27, 2023
    • Safe Rack LLC
    • John Rutledge Lawson
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Gangway having self-raising assembly
    • Patent number 11,254,527
    • Issue date Feb 22, 2022
    • Safe Rack LLC
    • John Rutledge Lawson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Gravity drawbridge
    • Patent number 10,202,727
    • Issue date Feb 12, 2019
    • Ernest Morgan Surles
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Bridge apparatus
    • Patent number 8,959,694
    • Issue date Feb 24, 2015
    • Ensco 392 Limited
    • Derek William Frank Clarke
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Span lock with centering guide
    • Patent number 6,701,562
    • Issue date Mar 9, 2004
    • City of Chicago
    • Daniel Burke
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Pre-load adjustment for span lock system
    • Patent number 6,588,041
    • Issue date Jul 8, 2003
    • Steward Machine Co., Inc.
    • Robert L. Cragg
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Energy-absorbing span lock system for drawbridges
    • Patent number 5,327,605
    • Issue date Jul 12, 1994
    • Steward Machine Co., Inc.
    • Robert L. Cragg
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Mooring system
    • Patent number 5,044,829
    • Issue date Sep 3, 1991
    • Paul W. Hemminger
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Mooring system
    • Patent number 4,990,029
    • Issue date Feb 5, 1991
    • Paul W. Hemminger
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    2315942
    • Patent number 2,315,942
    • Issue date Apr 6, 1943
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2085613
    • Patent number 2,085,613
    • Issue date Jun 29, 1937
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1974114
    • Patent number 1,974,114
    • Issue date Sep 18, 1934
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1807780
    • Patent number 1,807,780
    • Issue date Jun 2, 1931
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1648574
    • Patent number 1,648,574
    • Issue date Nov 8, 1927
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1629468
    • Patent number 1,629,468
    • Issue date May 24, 1927
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1618267
    • Patent number 1,618,267
    • Issue date Feb 22, 1927
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1519189
    • Patent number 1,519,189
    • Issue date Dec 16, 1924
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1364764
    • Patent number 1,364,764
    • Issue date Jan 4, 1921
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1200077
    • Patent number 1,200,077
    • Issue date Oct 3, 1916
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1145166
    • Patent number 1,145,166
    • Issue date Jul 6, 1915
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1139047
    • Patent number 1,139,047
    • Issue date May 11, 1915
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1046264
    • Patent number 1,046,264
    • Issue date Dec 3, 1912
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    617606
    • Patent number 617,606
    • Issue date Jan 10, 1899
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    427446
    • Patent number 427,446
    • Issue date May 6, 1890
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    407700
    • Patent number 407,700
    • Issue date Jul 23, 1889
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    162768
    • Patent number 162,768
    • Issue date May 4, 1875
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    147775
    • Patent number 147,775
    • Issue date Feb 24, 1874
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1551
    • Patent number 1,551
    • Issue date Apr 15, 1840
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

  • Information Patent Application

    GANGWAY HAVING SELF-RAISING ASSEMBLY
    • Publication number 20240308794
    • Publication date Sep 19, 2024
    • SAFE RACK LLC
    • John Rutledge Lawson
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    GANGWAY HAVING SELF-RAISING ASSEMBLY
    • Publication number 20230303345
    • Publication date Sep 28, 2023
    • SAFE RACK LLC
    • John Rutledge Lawson
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    GANGWAY HAVING SELF-RAISING ASSEMBLY
    • Publication number 20220135353
    • Publication date May 5, 2022
    • SAFE RACK LLC
    • John Rutledge Lawson
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Gravity Drawbridge
    • Publication number 20190048537
    • Publication date Feb 14, 2019
    • Ernest Morgan Surles
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    BRIDGE APPARATUS
    • Publication number 20130283550
    • Publication date Oct 31, 2013
    • ENSCO 392 LIMITED
    • Derek William Frank Clarke
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Span lock with centering guide
    • Publication number 20030106172
    • Publication date Jun 12, 2003
    • CITY OF CHICAGO and STEWART MACHINE CO., INC.
    • Daniel Burke
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES