Patents by Inventor Alan L. Hignite

Alan L. Hignite 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).

  • Fume hood sash operator
    Patent number: 4502375
    Abstract: What is disclosed is a new and novel fume hood sash operator system and a fume hood containing such a system. The sash operator is constructed to operate with a belt drive and a clutch mechanism so that the sash member can be stopped, started, moved up or down to accommodate changes in the flow or air moving through the hood structure and to provide a safe, durable, energy-saving sash operating system.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: March 5, 1985
    Assignee: Tri City Laboratory Specialists, Inc.
    Inventors: Alan L. Hignite, Richard L. Wendt, Roy F. Zeigler, Warren L. Zeigler