Patents by Inventor William S. Dempster

William S. Dempster 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: 10633864
    Abstract: A roof hatch for enabling access to a rooftop of a building from an interior of the building includes a curb adapter configured to be disposed over a curb of the rooftop. The curb is formed around an opening in the rooftop that fluidly connects the interior of the building to an exterior of the building. Additionally, the roof hatch includes a cover coupled to the curb adapter by a pivoting member. The cover includes a support extending within an interior length of the cover. The roof hatch includes a gas spring coupled between the support and the curb adapter. The gas spring is configured to apply a force to the support, and the support is configured to distribute the force along the interior length of the cover.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: April 28, 2020
    Assignee: AIR DISTRIBUTION TECHNOLOGIES IP, LLC
    Inventor: William S. Dempster
  • Publication number: 20190211561
    Abstract: A roof hatch for enabling access to a rooftop of a building from an interior of the building includes a curb adapter configured to be disposed over a curb of the rooftop. The curb is formed around an opening in the rooftop that fluidly connects the interior of the building to an exterior of the building. Additionally, the roof hatch includes a cover coupled to the curb adapter by a pivoting member. The cover includes a support extending within an interior length of the cover. The roof hatch includes a gas spring coupled between the support and the curb adapter. The gas spring is configured to apply a force to the support, and the support is configured to distribute the force along the interior length of the cover.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 11, 2019
    Inventor: William S. Dempster
  • Patent number: 8670224
    Abstract: Some embodiments relate to a power management system includes a primary power source and a secondary power source. The power management system further includes an enclosure and an electrical component located within the enclosure. The electrical component is connected to the primary power source and the secondary power source. The power management system further includes a membrane that is mounted to an outside of the enclosure. The membrane extends through the enclosure such that the membrane provides information relating to operation of the power management system.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: March 11, 2014
    Assignee: Kohler Co.
    Inventors: Michael T. Little, Brian T. Willmas, Anthony J. Hackbarth, William S. Dempster
  • Publication number: 20130114186
    Abstract: Some embodiments relate to a power management system includes a primary power source and a secondary power source. The power management system further includes an enclosure and an electrical component located within the enclosure. The electrical component is connected to the primary power source 11 and the secondary power source. The power management system further includes a membrane that is mounted to an outside of the enclosure. The membrane extends through the enclosure such that the membrane provides information relating to operation of the power management system.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Applicant: Kohler Co.
    Inventors: Michael T. Little, Brian T. Willmas, Anthony J. Hackbarth, William S. Dempster