Patents by Inventor Pierre Avril

Pierre Avril 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).

  • Protective cover for an exhaust fan motor
    Patent number: 4494450
    Abstract: A protective cover for an exhaust fan motor or the like actuable to withdraw the same by normally restrained positive pressure from the motor upon the monitoring of hot fumes representing a fire, thereby to expose the motor to a cooling environment little different from or substantially the same as that of its normal operation.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: January 22, 1985
    Assignee: Jeumont-Schneider
    Inventor: Pierre Avril