Patents by Inventor Gerard O'Connell

Gerard O'Connell 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).

  • Talking door sentinel
    Patent number: 3938120
    Abstract: A talking door sentinel has a housing which is secured to the edge of a door by means of a bracket. The movement of the door away from the door frame upon its being opened, moves a trigger which actuates a battery-operated voice box inside the housing. The voice box then plays one of a number of pre-recorded messages. When the door is subsequently closed, the approaching door frame resets the trigger so that the sentinel will emit another message when the door is next opened.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: February 10, 1976
    Assignee: Baltimore Brushes, Inc.
    Inventor: Gerard O'Connell