Patents by Inventor Tommy J. Bedwell

Tommy J. Bedwell 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).

  • Austempered gray iron cylinder liner and method of manufacture
    Patent number: 6732698
    Abstract: A cylinder liner for high temperature, high performance engine applications is cast from gray iron material and thereafter austempered for a time sufficient to achieve a substantially bainitic microstructure that is stable against excessive thermal growth when the liner is exposed to extreme operating temperatures of about 450° F. for an extended period of time of about 20 hours.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: May 11, 2004
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Tommy J. Bedwell, John F. Miller
  • Dual alloy piston and method of manufacture
    Patent number: 6508162
    Abstract: A dual alloy metallic piston is made by casting a first alloy into a mold to form a corresponding first portion. Before the first alloy solidifies, a second alloy is cast into the mold to form a corresponding second portion of the piston. The first and second portions are joined across a transition zone which is a blend of the two alloys.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: January 21, 2003
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Tommy J. Bedwell
  • Unified multi-piece piston and method of manufacture
    Patent number: 6499387
    Abstract: A method of manufacturing a piston for heavy-duty diesel engine applications comprises forming a piston body having a pair of pin bosses, and bonding separately formed skirt portions to the pin bosses. The resultant piston has the separately formed skirt portions united to the piston body in a monobloc piston construction.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: December 31, 2002
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Tommy J. Bedwell
  • Dual alloy piston and method of manufacture
    Publication number: 20020166448
    Abstract: A dual alloy metallic piston is made by casting a first alloy into a mold to form a corresponding first portion. Before the first alloy solidifies, a second alloy is cast into the mold to form a corresponding second portion of the piston. The first and second portions are joined across a transition zone which is a blend of the two alloys.
    Type: Application
    Filed: May 10, 2001
    Publication date: November 14, 2002
    Applicant: Federal-Mogul World Wide, Inc.
    Inventor: Tommy J Bedwell
  • Unified multi-piece piston and method of manufacture
    Publication number: 20020124721
    Abstract: A method of manufacturing a piston for heavy-duty diesel engine applications comprises forming a piston body having a pair of pin bosses, and bonding separately formed skirt portions to the pin bosses. The resultant piston has the separately formed skirt portions united to the piston body in a monobloc piston construction.
    Type: Application
    Filed: March 6, 2001
    Publication date: September 12, 2002
    Applicant: Federal-Mogul World Wide, Inc.
    Inventor: Tommy J. Bedwell
  • Piston sleeve
    Patent number: 6357400
    Abstract: The piston sleeve has a radial positioning surface adjacent to the top surface and an axial positioning surface separated from radially positioning surface by a coolant contact surface. A piston bore extending the length of the piston sleeve is machined to form a non-cylindrical bore. The sleeve is compressed by applying force to the top surface and to the axial positioning surface. The piston sleeve is also heated to a normal working temperature. The compression force and the force due to thermal expansion deforms the piston sleeve and changes the non-cylindrical bore into a substantially cylindrical bore.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: March 19, 2002
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Tommy J. Bedwell, Carmo Ribeiro