Patents by Inventor Leonard H. Goldstein

Leonard H. Goldstein 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).

  • Apparatus and method for domestic hot water control
    Patent number: 4564141
    Abstract: A domestic hot water heating system which disables the normal aquastat during set-back periods where the temperature of the water source is sensed at the output manifold and the temperature of the water also is sensed a predetermined distance along the manifold to determine a demand or lack of demand for hot water. The system will enable the aquastat during a set-back period when demand is made and disable the aquastat when there is no longer a demand.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: January 14, 1986
    Assignee: Doleer Electronics, Inc.
    Inventors: Douglas J. Montgomery, Leonard H. Goldstein, Ernest Stumbo