Patents by Inventor Rush D. Holt

Rush D. Holt 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).

  • Method for maintaining a correct density gradient in a non-convecting solar pond
    Patent number: 4249518
    Abstract: The present invention resides in a method and apparatus for maintaining a substantially constant salt density gradient in a non-convecting salt gradient pond. The apparatus for carrying out the method of the present invention enables one to maintain a substantially constant salt density gradient automatically in a highly efficient, simple and economic manner.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: February 10, 1981
    Inventor: Rush D. Holt