Patents by Inventor Marcel L. Dumais

Marcel L. Dumais 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).

  • Coin operated lock for ski rack
    Patent number: 4828098
    Abstract: A coin operated lock for ski racks comprises a latch secured to an inner sliding member provided with a passageway for receiving a coin. The passageway has an opened bottom obstructed by a tiltable cam plate which hinder the movement of the sliding member. The introduction of a coin in the passageway tilts the cam plate and releases the sliding member. A key operated lever actuates the liberated sliding member and projects the latch outside the lock for engaging into a catch.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: May 9, 1989
    Inventors: Marcel L. Dumais, Gaetan R. Dumais