Patents by Inventor Brian C. Leuenhagen

Brian C. Leuenhagen 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).

  • Cylinder block casting slab core cast geometry for sawcut entrance enhancement
    Patent number: 11655776
    Abstract: An automobile vehicle engine includes multiple water jackets individually formed in a cast engine block proximate to successive ones of multiple cylinder bores. Multiple cast-in place transition regions are individually formed during a casting operation of the cast engine block at entrances to individual ones of the multiple water jackets. Individual ones of multiple sawcuts open into individual ones of the multiple cast-in place transition regions.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: May 23, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ronald John Petrus, Richard M. Nichols, III, Brian C. Leuenhagen, William A. Berry, Qigui Wang, James T. Singer
  • Hybrid cam bore sand core with metal chills for cast aluminum block
    Patent number: 11554413
    Abstract: A system for making a hybrid cam bore sand core with metal chills for an engine block includes an engine block cast of an aluminum material. A camshaft bore extends through the engine block. A cam bore sand core with at least one metal chill is positioned within the camshaft bore. A body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of at least one cam bearing member during casting of the engine block to increase a cooling rate of the at least one cam bearing member and create a crystalline material depth of the cam bearing member having enhanced mechanical properties.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: January 17, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ronald J. Petrus, Qigui Wang, Richard M. Nichols, III, Brian C. Leuenhagen
  • HYBRID CAM BORE SAND CORE WITH METAL CHILLS FOR CAST ALUMINUM BLOCK
    Publication number: 20220241851
    Abstract: A system for making a hybrid cam bore sand core with metal chills for an engine block includes an engine block cast of an aluminum material. A camshaft bore extends through the engine block. A cam bore sand core with at least one metal chill is positioned within the camshaft bore. A body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of at least one cam bearing member during casting of the engine block to increase a cooling rate of the at least one cam bearing member and create a crystalline material depth of the cam bearing member having enhanced mechanical properties.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 4, 2022
    Inventors: Ronald J. Petrus, Qigui Wang, Richard M. Nichols, III, Brian C. Leuenhagen