Patents by Inventor David McLeod Massey

David McLeod Massey 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).

  • Protection and control of continuous boiling water units
    Patent number: 5692096
    Abstract: A continuous boiling water unit is disclosed and comprises a water heating tank (1) containing an electric heating element (2) near the bottom of the tank (1) and a level control tank (3) mounted alongside the heating tank (1). An interconnecting steam communication port (21) is located between the level control tank (3) and the heating tank (1), together with a draw-off connection (23) and a flow connection (10). There further comprises an electronic temperature sensor in the form of a thermister (50) operable to sense the temperature of water in the heating tank (1), and upon sensing boiling of the water in the heating tank (1), operable to cause cut-off of the supply to the heating element (2).
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: November 25, 1997
    Assignee: Zip Heaters (Australia) Pty Limited
    Inventors: Raymond Dennis Massey, David McLeod Massey, Wieslaw Henryk Sliwa, Philip Ross Pepper