Patents by Inventor Tom B. Wallace

Tom B. Wallace 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: 4915423
    Abstract: A releasable coupling 10 includes a first element 12 which is rotatable about a rotational axis 18. A second element 14 is axially aligned with the first element 12, the first element 12 and the second element 14 being axially displaceable relative to each other. The first element 12 and the second element 14 define complementary drive formations 24, 26 which, when the first element 12 and the second element 14 abut axially are engaged with each other, and when the first element 12 and the second element 14 are spaced axially from each other by a predetermined amount are disengaged from each other.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: April 10, 1990
    Inventor: Tom B. Wallace