Patents by Inventor Ferdinand M. Svirklye

Ferdinand M. Svirklye 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: 5281046
    Abstract: A resilient annular transition collar is provided for roadway structures, including manholes and catch basins, which acts as a flexible transition between the rigid structure or frame of the manhole and the semi-rigid structure of the asphalt paving. The resilient transition collar absorbs any movement of the pavement during expansion and contraction and this absorption avoids the prior art problems of break-up, cracking and separation between manhole and pavement. Risers or adjusting rings may be employed in conjunction with the transition collar to ensure a flush fit between the pavement surface and the upper surface of the transition collar.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: January 25, 1994
    Assignee: Domal Envirotech Inc.
    Inventor: Ferdinand M. Svirklye