Patents by Inventor Edward David

Edward David 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).

  • Windsock with wind speed indicators
    Patent number: 4730488
    Abstract: A windsock used for indicating wind direction is provided on an upper side with a multiplicity of spaced chevrons for enhancing the detection of wind direction. The chevrons are spaced from one another by such distances that each chevron represents the addition of 4 or 5 knots to the prevailing wind velocity. Accordingly, if 4 chevrons are visible from above, the prevailing wind speed is 4 to 5 knots greater than if only 3 chevrons are visible from above.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: March 15, 1988
    Assignee: The Spark Corp.
    Inventor: Edward David