Patents by Inventor Hugh D. Ronald

Hugh D. Ronald has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7461427
    Abstract: A system and method for construction of bridges and elevated roadways with pre-stressed concrete or steel bridge girders is provided including cast-in-place concrete deck slabs and partial and full depth pre-stressed pre-cast concrete deck slabs with post-tensioning conduits for post-tensioning a series of deck slabs. A plurality of bogies traveling on the lower flanges of the bridge girders are provided to place and level the deck slabs and to pre-load the bridge girders to eliminate camber before placement of the deck slabs on the bridge girders or to level, place, support and remove deck forms for a cast-in-place deck slab on the bridge girders. Also provided is a system for attachment of cast-in-place parapets.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: December 9, 2008
    Inventors: Hugh D. Ronald, Don Theobald