Patents by Inventor Patrick M. Carlson

Patrick M. Carlson 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).

  • Carburization of vehicle manifold flanges to prevent corrosion
    Patent number: 6581377
    Abstract: An exhaust manifold for a vehicle engine and a manufacturing process to prevent corrosion of the manifold during shipping and storage. The manifold includes a manifold body having a plurality of arms corresponding to the exhaust ports of the engine and a collector chamber for directing the exhaust gasses to the vehicle exhaust system. Attached to the ports of the body are flanges to facilitate connection of the manifold to the engine. The flanges are manufactured of carbon steel and includes apertures to receive mounting flanges. To prevent corrosion of the flanges, the flanges are subject to a process of ferritic nitro carburization which inhibits the formation of iron-oxide.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: June 24, 2003
    Assignee: Metaldyne Tubular Products, Inc.
    Inventors: Patrick M. Carlson, Dell G. Smith, Roger A. Braun, Thomas P. Ketelhut, Jr.
  • Carburization of vehicle manifold flanges to prevent corrosion
    Publication number: 20030014968
    Abstract: An exhaust manifold for a vehicle engine and a manufacturing process to prevent corrosion of the manifold during shipping and storage. The manifold includes a manifold body having a plurality of arms corresponding to the exhaust ports of the engine and a collector chamber for directing the exhaust gasses to the vehicle exhaust system. Attached to the ports of the body are flanges to facilitate connection of the manifold to the engine. The flanges are manufactured of carbon steel and includes apertures to receive mounting flanges. To prevent corrosion of the flanges, the flanges are subject to a process of ferritic nitro carburization which inhibits the formation of iron-oxide.
    Type: Application
    Filed: December 19, 2001
    Publication date: January 23, 2003
    Inventors: Patrick M. Carlson, Dell G. Smith, Roger A. Braun, Thomas P. Ketelhut