Patents by Inventor William E. Rolf

William E. Rolf 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).

  • Publication number: 20130247461
    Abstract: A plant drainage and hydrating system for pots with or without drainage capability. A felt layer is shaped to abut a generally flat surface, with the layer having a determined depth and having a structure to store and filter passing therethrough and support earth above the flat surface for drainage. One form of the invention has a single felt layer. A second form of the invention has first and second felt layers, separated by a spacer, with the layers connected through the spacer.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 26, 2013
    Inventors: David E. Rolf, William E. Rolf
  • Patent number: 8231955
    Abstract: A material for clinging to smooth, impervious surfaces and supporting other objects thereon. The material includes a body of foamed polyvinyl chloride, having a foam cellular structure of about 80% closed cell foam and up to about 20% open cell foam. A flexible skin is formed on one side, the skin being unfoamed polyvinyl chloride, and having surface imperfections comprising small cavities. An adhesive layer may be formed on the opposite side to secure the body to objects mounted by the material on a smooth surface. The material bears a load in addition to the weight of the material itself when the flexible skin adheres to a vertical surface, such as a mirror or stainless steel refrigerator door.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: July 31, 2012
    Inventors: David E. Rolf, William E. Rolf
  • Publication number: 20110244161
    Abstract: A material for clinging to smooth, impervious surfaces and supporting other objects thereon. The material includes a body of foamed polyvinyl chloride, having a foam cellular structure of about 80% closed cell foam and up to about 20% open cell foam. A flexible skin is formed on one side, the skin being unfoamed polyvinyl chloride, and having surface imperfections comprising small cavities. An adhesive layer may be formed on the opposite side to secure the body to objects mounted by the material on a smooth surface. The material bears a load in addition to the weight of the material itself when the flexible skin adheres to a vertical surface, such as a mirror or stainless steel refrigerator door.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 6, 2011
    Inventors: David E. Rolf, William E. Rolf