Patents by Inventor Berwin W. Darrow

Berwin W. Darrow 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).

  • Lubrication control apparatus
    Patent number: 4326603
    Abstract: Automatic lubrication control system in which current flow between two mating electrically conductive, lubricated members in sliding contact is integrated with respect to time and used to provide a control signal for a pump that applies lubricant to the contact surface. The voltage level resulting from the integrated current flow can be applied directly to control the pump circuit or it can be counted or sampled at preselected times to provide the pump actuating signal.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: April 27, 1982
    Assignee: International Business Machines Corporation
    Inventors: Berwin W. Darrow, David J. Wilkinson