Patents by Inventor Dale L. Walker

Dale L. Walker 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).

  • Patent number: 5483917
    Abstract: A light reflecting traffic direction wand including a wand, the wand being positionable in a vertical orientation with an upper extent of an enlarged size and a lower extent of a reduced size, the upper extent and lower extent being formed in a curved configuration about a common vertical center of rotation, the upper extent being axially longer than the lower extent, the lateral extent of the upper extent being larger than the lateral extent of the lower extent; and a plurality of strips of reflective material secured to the interior surface of the upper and lower extent, such reflective material includes an upper strip located adjacent to the upper edge of the upper extent, an enlarged intermediate extent secured to the majority of the extent of the interior surface of the upper extent and a T-shaped member having its upper horizontal extent in the lower region of the upper extent and having its vertical component extent downwardly from the upper extent to the lower portion of the lower extent.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: January 16, 1996
    Inventor: Dale L. Walker
  • Patent number: 4901644
    Abstract: An apparatus for marking safe areas in an explosive hazard environment such s a minefield. The marking apparatus is carried and deposited into a minefield with explosive cloud forming fuel. When the explosive cloud is set off, mines under the cloud are exploded by the overpressure which simultaneously activates a timer securing the apparatus lid. The lid is pushed away by the spring-like, coiled telescoping members which then fully extend beyond the apparatus housing. The tapered ends of each extended telescoping member bear an electroluminescent light stick for nighttime apparatus and location marking, and a member length flag for daytime marking.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: February 20, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William R. Nevins, Neal M. Lundwall, Dale L. Walker