Patents by Inventor Terry D. Perciful

Terry D. Perciful 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: 5887920
    Abstract: A shovel of the type comprising a blade and a shank having at least one longitudinal axis, the improvement comprising: at least one sleeve coaxially and slidably received upon the shank; a first member integrally connected to the shank between the blade and the sleeve(s); a second member integrally connected to the sleeve(s) and being longitudinally and manually movable with the sleeve(s) in a direction away from or toward the first member so that the second member can be moved to a position longitudinally separated from the first member and then moved toward the first member so as to impact the first member and impart a force to the blade.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: March 30, 1999
    Inventor: Terry D. Perciful