Patents by Inventor Ronald N. Allen

Ronald N. Allen 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).

  • Liquid level control valve
    Patent number: 4164955
    Abstract: A liquid level control valve, more particularly for use with air separation means and having a suction chamber communicating with a source of vacuum, is disclosed. A port in the wall of the suction chamber is opened and closed by a float-controlled valve which has the center of a flexible diaphragm fixely connected thereto and the periphery of the diaphragm sealingly engaged around the periphery of an aperture in the suction chamber, the arrangement providing a balanced action.
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: August 21, 1979
    Assignee: Millars Wellpoint International Ltd.
    Inventor: Ronald N. Allen