Patents by Inventor Joseph D. Heffelmire

Joseph D. Heffelmire 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).

  • Patent number: 5787651
    Abstract: A sound deadening wall assembly comprising a first wall panel attached to a first stud member, a second wall panel situated parallel to the first wall panel and attached to a second stud member, wherein the stud members abut each other with a resilient attachment material therebetween to secure the first and second stud members to each other. The stud members are of C-shape cross-section with the open end of the C-shape facing in opposite directions and abutting each other to create an overall S-shape when the stud members are joined together. Separable end and top members are also disclosed.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: August 4, 1998
    Assignee: Modern Materials, Inc.
    Inventors: Michael E. Horn, Joseph D. Heffelmire