Patents Assigned to Louis E. Hay
  • Moated pet feeder
    Patent number: 4357905
    Abstract: A moated pet feeder of the type which combines a food bowl and a water bowl; the food bowl being surrounded by a moat cavity which fills with water flowing through a substantially horizontal passage connecting the moat cavity with the water bowl to thereby form a moat which ants and other crawling insects will not cross to gain access to the food in the food bowl.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: November 9, 1982
    Assignee: Louis E. Hay
    Inventor: Robert W. Carpenter
  • Traveling wave device with unific slow wave structure having segmented dielectric support
    Patent number: 4268778
    Abstract: A traveling wave device, or the like, having an internal metallic helical core element which has a plurality of particulate deposition deposited dielectric segments to form an unific slow wave structure having an improved balance between the heat conductive and electrical requirements of said slow wave structure; and methods for forming said balanced slow wave structure.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: May 19, 1981
    Assignee: Louis E. Hay
    Inventor: Walter Friz
  • Traveling wave device with cast slow wave interaction structure and method for forming
    Patent number: 4129803
    Abstract: A traveling wave device having a slow wave structure formed from at least one casting in which at least a portion of the internal passages are formed during the casting process to provide a more rigid structure having improved dimensional retention through the elimination of a multiplicity of brazed joints at and between adjacent cavity walls.
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: December 12, 1978
    Assignee: Louis E. Hay
    Inventor: Walter Friz
  • Traveling wave device with unific composite metal dielectric helix and method for forming
    Patent number: 4115721
    Abstract: A traveling wave device having a metallic helical core element which is ceramic coated on its peripheral surfaces to provide a heat transferring dielectric and which is in intimate peripheral contact within the body of said device, to thus provide a simplified and long-life structure having improved heat conductivity permitting greater RF output and size-weight reduction of said device; and methods for forming and coating the helices.
    Type: Grant
    Filed: January 7, 1977
    Date of Patent: September 19, 1978
    Assignee: Louis E. Hay
    Inventor: Walter Friz