Patents by Inventor Daniel E. Hulsey

Daniel E. Hulsey 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).

  • Wave plate and associated method
    Patent number: 7382535
    Abstract: An improved wave plate and associated method are provided. The wave plate includes a plurality of layers of uniaxial crystal including at least one layer of positive uniaxial crystal and at least one layer of negative uniaxial crystal. The thicknesses of the layers are configured to achieve both a desired retardance and an insensitivity to angle of incidence.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: June 3, 2008
    Assignee: The Boeing Company
    Inventor: Daniel E. Hulsey
  • Non-contact hole depth gage
    Patent number: 6882436
    Abstract: Disclosed is a method that utilizes optics to measure a hole depth in a workpiece. The method involves placing a light recording apparatus and a light source apparatus proximate a hole. Light is then emitted from the light source apparatus and is directed into the hole. This illumination of the hole allows an image of the side surface of the hole that is at the greatest distance from the light recording apparatus to be recorded. Then, the apparent diameter of the image is calculated. The apparent diameter of the image, in turn, is compared to the known diameter of the hole in order to calculate the distance between a reference datum in the light recording apparatus and the far side surface of the hole. Once this distance is determined, the hole depth is calculated by accounting for the distance between the reference datum and the workpiece surface.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: April 19, 2005
    Assignee: The Boeing Company
    Inventors: John H. Belk, Daniel E. Hulsey
  • Non-contact hole depth gage
    Publication number: 20030107728
    Abstract: Disclosed is a method that utilizes optics to measure a hole depth in a workpiece. The method involves placing a light recording apparatus and a light source apparatus proximate a hole. Light is then emitted from the light source apparatus and is directed into the hole. This illumination of the hole allows an image of the side surface of the hole that is at the greatest distance from the light recording apparatus to be recorded. Then, the apparent diameter of the image is calculated. The apparent diameter of the image, in turn, is compared to the known diameter of the hole in order to calculate the distance between a reference datum in the light recording apparatus and the far side surface of the hole. Once this distance is determined, the hole depth is calculated by accounting for the distance between the reference datum and the workpiece surface.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 12, 2003
    Inventors: John H. Belk, Daniel E. Hulsey