Patents by Inventor Edgar S. Haffner

Edgar S. Haffner 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).

  • Electrically heated insecticide delivery system
    Patent number: 6151827
    Abstract: The invention is directed to an insecticide delivery system for delivering an insecticide to an ambient environment. The insecticide delivery system includes a can having an open end and an interior. A thermally activated insecticide is disposed within the can interior. An electrical heater assembly is disposed adjacent to the can. The heater assembly is configured for increasing a temperature of the can to a temperature whereby the thermally activated insecticide is delivered to the ambient environment. The heater assembly includes a resistance heater wire connected in series with a thermal cut-off device. The resistance heater wire may include a parallel shunt at one or both ends thereof.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: November 28, 2000
    Assignee: Heaters Engineering, Inc.
    Inventors: Kevin W. Smith, Edgar S. Haffner