Patents by Inventor Thomas B. Bartholomew

Thomas B. Bartholomew 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).

  • Hydroformed tubular structures and methods of making
    Patent number: 6532639
    Abstract: A hydroformed tubular structure includes at least two hydroformed members connected at a joint. At least one of said members includes a flattened portion having opposite sides in engagement. One of the sides engages and is secured to a mating portion of another of the members and a hydroformed conjugate portion is formed in the one side adjacent the flattened portion and is secured in a recess of the other member. A hydroformed structural portion extends from the conjugate portion in a direction away from the flattened portion.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: March 18, 2003
    Assignee: General Motors Corporation
    Inventors: Chi-Mou Ni, Tehui Peng, Thomas B. Bartholomew
  • Hydroformed tubular structures and methods of making
    Publication number: 20020186999
    Abstract: A hydroformed tubular structure includes at least two hydroformed members connected at a joint. At least one of said members includes a flattened portion having opposite sides in engagement. One of the sides engages and is secured to a mating portion of another of the members and a hydroformed conjugate portion is formed in the one side adjacent the flattened portion and is secured in a recess of the other member. A hydroformed structural portion extends from the conjugate portion in a direction away from the flattened portion.
    Type: Application
    Filed: June 7, 2001
    Publication date: December 12, 2002
    Applicant: GENERAL MOTORS CORPORATION
    Inventors: Chi-Mou Ni, Tehui Peng, Thomas B. Bartholomew
  • Hydroformed tubular structures and methods of making
    Patent number: 6361244
    Abstract: A hydroformed tubular structure includes at least two hydroformed members connected at a joint. At least one of said members includes a flattened portion having opposite sides in engagement. One of the sides engages and is secured to a mating portion of another of the members and a hydroformed conjugate portion is formed in the one side adjacent the flattened portion and is secured in a recess of the other member. A hydroformed structural portion extends from the conjugate portion in a direction away from the flattened portion.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: March 26, 2002
    Assignee: General Motors Corporation
    Inventors: Chi-Mou Ni, Tehui Peng, Thomas B. Bartholomew