Patents by Inventor Allan Ahlgren

Allan Ahlgren 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: 20060248843
    Abstract: A series of rebar hangers for use at both a secondary primary level and a secondary level, vertically speaking for the suspension of rebar rods in footing formation. These components employ a rest head connected to a shaft, connected to a base, which base if the device is of a primary level nature has a spacer disposed on the rear side thereof. Each of the heads is conceptually interchangeable as is each of the bases interchangeable to create a fixed configuration unit for a specific mount and retention. The device's rest head is attached to or overlays a footing former, if primary; or attaches to a primary device if secondary. The base extending from the shaft is adapted to retain one or two rebar rods depending on the base's configuration.
    Type: Application
    Filed: May 9, 2005
    Publication date: November 9, 2006
    Inventors: Alvaro Zapata, Allan Ahlgren
  • Patent number: D712349
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: September 2, 2014
    Assignee: Ensto Oy
    Inventor: Allan Ahlgren