Patents by Inventor Harold E. Weckerly

Harold E. Weckerly 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).

  • Apparatus and method of drying and dehumidifying plastic
    Patent number: 4974337
    Abstract: An apparatus and process for heating and dehumidifying plastic materials in a container, such as a hopper, using a current of warm dry air. The apparatus having a desiccant for removing the moisture picked up from the material, and having a heater and cooler downstream from the desiccant. The dryer control operates in three modes to control the cooler only, to control the heater and cooler, and to control the heater only. Measured temperatures and operating conditions control the selection of specific modes.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: December 4, 1990
    Assignee: The Conair Group, Inc.
    Inventors: Kaihan Tavakoli, Harold E. Weckerly