Patents by Inventor David Michael Krieger

David Michael Krieger 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).

  • Electromagnetic shutter
    Patent number: 8651754
    Abstract: A shutter includes a driver ring, a plurality of shutter blades coupled to the drive ring such that movement of the drive ring transitions the plurality of shutter blades between an open position exposing a central aperture of the shutter, and a closed position blocking the central aperture, and a first stop and a second stop movable relative to the first stop. At least one of the first and second stops limits travel of the shutter blades.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 18, 2014
    Assignee: VA, Inc.
    Inventors: David Viglione, Stephen T. Pasquarella, David Michael Krieger, Helen Hong Yan
  • ELECTROMAGNETIC SHUTTER
    Publication number: 20120321292
    Abstract: A shutter includes a driver ring, a plurality of shutter blades coupled to the drive ring such that movement of the drive ring transitions the plurality of shutter blades between an open position exposing a central aperture of the shutter, and a closed position blocking the central aperture, and a first stop and a second stop movable relative to the first stop. At least one of the first and second stops limits travel of the shutter blades.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 20, 2012
    Inventors: David Viglione, Stephen T. Pasquarella, David Michael Krieger, Helen Hong Yan