Patents by Inventor Dean R. Winkelblech

Dean R. Winkelblech 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).

  • Portable elevator device
    Patent number: 4427094
    Abstract: This invention is an electrically powered movable elevator device comprised of a base mounted on wheels upon which is mounted a substantially vertical hollow support member through which a screw passes. A support nut attaches to a platform and engages the screw. An electrical control system attached to the platform allows a person standing thereon to be raised or lowered by the rotation of the screw. A reversible electric motor is belt-coupled to the screw which may be made to rotate in either direction, by the electrical control system.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: January 24, 1984
    Inventor: Dean R. Winkelblech
  • Elevator device
    Patent number: 4324317
    Abstract: This invention is an electrically powered elevator comprised of a hollow support member through which a screw passes. A reversible electric motor rotates the screw. A support nut attached to a platform engages the screw and an electrical control system attached to the platform allows a person standing on the platform to be raised or lowered by the rotation of the screw.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: April 13, 1982
    Inventor: Dean R. Winkelblech