Patents by Inventor William Orman Wollgast

William Orman Wollgast 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: 7140831
    Abstract: An attachment for a skid steer loader, back hoe or powered excavator that can be used to quickly smooth out the walls of a swimming pool, ditch, etc. following the excavation and the process of using the attachment. The attachment includes a vertical flat surface perpendicular to the ground for smoothing the walls of a swimming pool. The process will reduce the need for workers to spend time and effort smoothing the walls manually and improving the safety of swimming pool construction. The cost of building a swimming pool will be reduced significantly by decreasing the number of workers required in the construction process. The process of smoothing walls reduces the amount of gunite required in the swimming pool construction process and thus improving the economics for the pool builder.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: November 28, 2006
    Inventors: William Orman Wollgast, James Oliver Ellinwood