Patents by Inventor David Lynn Crandall

David Lynn Crandall 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).

  • METHODS FOR FORMING SIGHTING OPTICS INCLUDING FORMING AN OPTICAL ELEMENT HAVING A PLURALITY OF TRANSPARENT RINGS AND SIGHTING OPTICS FORMED BY SUCH METHODS
    Publication number: 20110261458
    Abstract: Sighting optics include a front sight and a rear sight positioned in a spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.
    Type: Application
    Filed: July 11, 2011
    Publication date: October 27, 2011
    Applicant: BATTELLE ENERGY ALLIANCE, LLC
    Inventor: David Lynn Crandall
  • Sighting optics including an optical element having a first focal length and a second focal length
    Patent number: 8000011
    Abstract: One embodiment of sighting optics according to the teachings provided herein may include a front sight and a rear sight positioned in spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus, for a user, images of the front sight and the target.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 16, 2011
    Assignee: Battelle Energy Alliance, LLC
    Inventor: David Lynn Crandall
  • Sighting optics including an optical element having a first focal length and a second focal length and methods for sighting
    Patent number: 8000010
    Abstract: Sighting optics include a front sight and a rear sight positioned in a spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: August 16, 2011
    Assignee: Battelle Energy Alliance, LLC
    Inventor: David Lynn Crandall
  • SIGHTING OPTICS
    Publication number: 20100238554
    Abstract: One embodiment of sighting optics according to the teachings provided herein may comprise a front sight and a rear sight positioned in spaced-apart relation. The rear sight includes optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and said front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.
    Type: Application
    Filed: May 24, 2010
    Publication date: September 23, 2010
    Applicant: BATTELLE ENERGY ALLIANCE, LLC
    Inventor: David Lynn Crandall
  • SIGHTING OPTICS AND METHODS FOR SIGHTING
    Publication number: 20100024275
    Abstract: One embodiment of sighting optics according to the teachings provided herein may comprise a front sight and a rear sight positioned in spaced-apart relation. The rear sight includes optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and said front sight, whereas the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 4, 2010
    Inventor: David Lynn Crandall