Patents by Inventor David R. Ahlstrom

David R. Ahlstrom 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).

  • Fixed Window Assembly Having A Thermal Break Liner
    Publication number: 20140331576
    Abstract: A window assembly includes a window frame having a front wall and a lateral wall, the window frame being set within a building opening. A thermal break liner having a laterally extending portion is provided wherein the laterally extending portion is positioned on the lateral wall of the window frame. The window assembly also includes a glazing with at least one pane of glass mounted in the window frame, a glazing bead for holding the glazing in place against the window frame, and a glazing bead retainer fixed to the thermal break liner for retaining the glazing bead in place on the thermal break liner. The thermal break liner is formed of a material having a low thermal transmittance factor and is positioned to prevent direct contact and thermal transfer between the glazing bead and the window frame. The window assembly may be a fixed or operable window assembly.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 13, 2014
    Inventors: John E. Brown, David R. Ahlstrom
  • Window assembly having a thermal break liner
    Patent number: 8484902
    Abstract: A window assembly includes a window frame having a front wall and a lateral wall, the window frame being set within a building opening. A thermal break liner having a laterally extending portion is provided wherein the laterally extending portion is positioned on the lateral wall of the window frame. The window assembly also includes a glazing with at least one pane of glass mounted in the window frame, a glazing bead for holding the glazing in place against the window frame, and a glazing bead retainer fixed to the thermal break liner for retaining the glazing bead in place on the thermal break liner. The thermal break liner is formed of a material having a low thermal transmittance factor and is positioned to prevent direct contact and thermal transfer between the glazing bead and the window frame. The window assembly may be a fixed or operable window assembly.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: July 16, 2013
    Assignee: Hope's Window, Inc.
    Inventors: John E. Brown, David R. Ahlstrom