Patents by Inventor David Thomas Sheller

David Thomas Sheller 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).

  • Structure for converter body
    Patent number: 5846495
    Abstract: There is provided an improved converter body formed of thin metal core elements and a housing. The thin metal core elements have a distal end and a proximal end The distal ends are secured to the housing, and at least some, preferably all, of the proximal ends are free of attachment to any rigid member. This structure results in improved durability in severe automotive tests.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: December 8, 1998
    Assignee: Engelhard Corporation
    Inventors: William A. Whittenberger, David Thomas Sheller
  • Assembly and method for making catalytic converter structure
    Patent number: 5820835
    Abstract: A catalytic converter is constructed by assembling a plurality of non-nestable foil leaves, each having opposite proximal and distal ends defining a leaf length. The proximal ends of the foil leaves are interconnected to provide a continuous flexible strip of overlapping foil leaves in which the distal ends of the leaves extend freely. The strip of foil leaves is subsequently formed to arrange the leaves to lie in curved paths radiating inwardly from the interconnected proximal ends toward a central area.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: October 13, 1998
    Assignee: Engelhard Corporation
    Inventors: David Thomas Sheller, William A. Whittenberger
  • Brazing of catalyzed converter bodies
    Patent number: 5657923
    Abstract: There is provided a process for brazing a first coated part to a second metal part which includes the steps of cleaning or masking, the surfaces of at least the first metal part, interposing a brazing metal foil between the metal parts, and induction heating the assembly to fuse the brazing metal foil, whereby the parts are adhered together, and then cooling. A controlled heating profile is disclosed.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: August 19, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: David Thomas Sheller
  • Electrically heatable converter body having plural thin metal core elements attached only at outer ends
    Patent number: 5651906
    Abstract: An electrically heatable converter body formed of thin metal core elements and a housing. The thin metal core elements have a distal end and a proximal end. The distal ends are secured to the housing, and at least some, preferably all, of the proximal ends are free of attachment to any rigid member.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: July 29, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: William A. Whittenberger, David Thomas Sheller