Patents by Inventor Ronald L. Uhlenberg

Ronald L. Uhlenberg 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).

  • Flameproof apparatus using non-grounded energy-limiting barrier
    Patent number: 7852610
    Abstract: A device intended to meet flameproof approval requirements is configured to have two compartments separated by an energy-limiting barrier. The first compartment of the device houses the wiring terminations that bear ignition-capable energy and, therefore, must be flameproof. The energy-limiting barrier is configured to limit the energy that can reach the second compartment to a level that is not ignition capable. This allows the second compartment to be safe without meeting the flameproof requirements, and allows user-interface elements such as switches and indicators to be designed in a more cost-effective manner.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: December 14, 2010
    Assignee: Fisher Controls International LLC
    Inventors: Ronald L. Uhlenberg, Stephen G. Seberger, Riyaz M. Ali, Jimmie L. Snowbarger, Clyde T. Eisenbeis