Patents by Inventor William J. H. Andrewes

William J. H. Andrewes 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).

  • Sundial with elevated gnomon support avoiding shadow eclipse
    Patent number: 8533963
    Abstract: A hemispheric armillary with arms and supporting a structure for supporting a gnomon over a time indicating dial plate is constructed to avoid the arms' shadows from eclipsing the gnomon shadow on the dial plate.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: September 17, 2013
    Inventor: William J. H. Andrewes
  • SUNDIAL WITH ELEVATED GNOMON SUPPORT AVOIDING SHADOW ECLIPSE
    Publication number: 20130025141
    Abstract: A hemispheric armillary with arms and supporting a structure for supporting a gnomon over a time indicating dial plate is constructed to avoid the arms' shadows from eclipsing the gnomon shadow on the dial plate.
    Type: Application
    Filed: November 23, 2011
    Publication date: January 31, 2013
    Inventor: William J. H. Andrewes
  • Sundial with dome and grid of light
    Patent number: 8065808
    Abstract: Sundial apparatus with overlying barrier grid.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: November 29, 2011
    Inventor: William J. H. Andrewes
  • SUNDIAL WITH DOME AND GRID OF LIGHT
    Publication number: 20110061250
    Abstract: Sundial apparatus with overlying barrier grid.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Inventor: William J. H. Andrewes
  • Sundial with standard time display
    Patent number: 7114262
    Abstract: A horizontal sundial (1) that can be used to find standard time accurately and be manufactured on a commercial basis for any specific location, incorporating a gnomonic projection map (1M), a wire gnomon (1a) to indicate the time on a scale (1b), and the point of noon on the map (1c), and a bead (1d) located directly above the center of the dial for indicating the Sun's overhead position on the map (1e), and marking special occasions and special dates.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: October 3, 2006
    Inventor: William J. H. Andrewes