Patents by Inventor John Raspotnik

John Raspotnik 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).

  • TRENCH DEVICE AND METHOD
    Publication number: 20080110696
    Abstract: A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple land bridges. Selected features include reduction in the number of ladders used increases worker safety, along with several other safety features such as catwalk railings, holding devices for ladders, etc. One catwalk is shown with a skid assembly to further increases efficiency by allowing the trench box to be towed with the catwalk in place. A manhole catwalk is shown for easy and safe inspection of manholes without the need for ladders.
    Type: Application
    Filed: January 25, 2007
    Publication date: May 15, 2008
    Inventor: John Raspotnik
  • Catwalk device and method
    Patent number: 7140808
    Abstract: A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple land bridges. Selected features include reduction in the number of ladders used increases worker safety, along with several other safety features such as catwalk railings, holding devices for ladders, etc. One catwalk is shown with a skid assembly to further increases efficiency by allowing the trench box to be towed with the catwalk in place.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: November 28, 2006
    Inventor: John Raspotnik
  • Catwalk device and method
    Publication number: 20050276668
    Abstract: A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple land bridges. Selected features include reduction in the number of ladders used increases worker safety, along with several other safety features such as catwalk railings, holding devices for ladders, etc. One catwalk is shown with a skid assembly to further increases efficiency by allowing the trench box to be towed with the catwalk in place.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 15, 2005
    Inventor: John Raspotnik