Patents by Inventor James C. Hoelzer

James C. Hoelzer 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).

  • Emission control catalyst assembly for an engine of a motor vehicle
    Publication number: 20020076365
    Abstract: An emission control catalyst assembly (10) for an engine includes a container (12) housing a catalyst substrate (34) that substantially fills an enlarged diameter section (18) of the container. The catalyst substrate has end faces (36 and 38) that axially intrude into interiors (40 and 42) of tapered sections (20 and 22) of container (12) to allow a more efficient shorter container that houses more catalyst material.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Applicant: Detroit Diesel Corporation
    Inventor: James C. Hoelzer
  • Method and apparatus for improving lubricant seal life
    Patent number: 4649870
    Abstract: A method and apparatus for improving the life of a lubricant seal located around a movable shaft where it exits a fluid-containing housing on a vehicle with an internal combustion engine having a crankcase. The invention includes removing blowby, which contains lubricating oil mist, from the crankcase and channeling it into contact with the outside surface of the lubricant seal. The apparatus and method of this invention also involve isolating the lubricant seal from dust and dirt.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: March 17, 1987
    Assignee: J. I. Case Company
    Inventor: James C. Hoelzer