Patents Assigned to The Spark Corp.
  • 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