Patents by Inventor Verlin Wirth

Verlin Wirth 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).

  • Duct system for temperature-controlled cargo containers
    Patent number: 6508076
    Abstract: A removable modular duct system for conducting air in a temperature-controlled cargo container. Temperature-controlled air produced and propelled by a refrigeration unit, is conducted along the modular duct system by one or more duct sections and a transition section that conducts air from the refrigeration unit to the duct sections. The air may be discharged laterally via lateral discharge openings in the duct sections. An end section may be coupled to the duct sections to discharge air at the end of the duct system.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: January 21, 2003
    Assignee: Thermo King Corporation
    Inventors: Randal Gast, David B. Ziegler, Doug Lenz, Ming Zhang, Verlin Wirth
  • Air return bulkhead with filter
    Patent number: 6470692
    Abstract: An air return bulkhead having a filter for filtering dust, dirt and debris out of an airflow prior to its entry into an evaporator or heat exchanger. The apparatus is particularly designed for use within a climate-controlled space such as a trailer or truck interior. Air pulled into the refrigeration system first enters the air return bulkhead where particles and debris are filtered. The air then travels through the refrigeration system and back into the climate-controlled space.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: October 29, 2002
    Assignee: Thermo King Corporation
    Inventors: David B. Ziegler, Verlin Wirth, Phillip R. Boudewyns, Ta Yang
  • Air return bulkhead for use with a transport temperature control system
    Patent number: 6364388
    Abstract: An air return bulkhead comprising a first bulkhead portion and a second bulkhead portion joined by a convoluted hinge member. The hinge permits the bulkhead portions to be moved relative to each other.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: April 2, 2002
    Assignee: Thermo King Corporation
    Inventors: David B. Ziegler, Verlin Wirth, Jerry Kiesner