Patents by Inventor Patrick J. Callahan

Patrick J. Callahan 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: 20220408914
    Abstract: A storage system includes a framing assembly, a plurality of storage units, and a sliding wall assembly. The framing assembly includes a plurality of side panels and a plurality of rear panels. Each storage unit includes a top surface and a base surface, each of the top surface and the base surface secured to and spanning a pair of side panels and the associated rear panel. The sliding wall assembly includes a sliding wall and upper and lower track systems. The sliding wall moves laterally parallel to the plurality of side panels. Each track system includes a panel track member and a wall track member, wherein the panel track member is secured to a side panel and the wall track member is secured to the upper or lower surface of the sliding wall.
    Type: Application
    Filed: June 27, 2022
    Publication date: December 29, 2022
    Inventor: Patrick J. Callahan
  • Patent number: 5281826
    Abstract: Disclosed is a real-time fluorescence imaging system for detecting on-site the presence and boundaries of spills of insulating liquids for transformers and capacitors and other fluorescing materials providing a two- dimensional image of the spill having excitement means positionable near a spill for exciting fluorescence emissions from the spill materials, image intensification means for intensifying the fluorescent emissions, first detection means positionable to detect intensified fluorescent emissions from the insulating liquids and generating a detection signal, and display means for receiving the detection signal and generating a real-time video image of the presence and boundaries of the spill. The present invention also includes pulse means for causing the excitement means to periodically excite fluorescent emissions from the insulating liquids and control means for controlling the intensification means to intensify only during periods of fluorescent excitation.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: January 25, 1994
    Assignee: Electric Power Research Institute, Inc.
    Inventors: William A. Ivancic, Russell H. Barnes, Daniel R. Grieser, Patrick J. Callahan