Patents by Inventor Dan M. Hall

Dan M. Hall 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: 4941645
    Abstract: The invention relates to a device for lifting and transporting heavy objects, such as a piano with the use of a hoist mechanism mounted on the frame which straddles the piano. The frame is mounted on casters to allow easy rolling of the frame along a horizontal surface, while the piano is being secured within the frame in a suspended position through the use of the lifting bar engaging the piano about its rear horizontal frame post. Pendulous movement of the piano is prevented by the use of a pair of horizontal cross bars secured to vertical posts of the frame in the lower and upper portions thereof.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: July 17, 1990
    Inventor: Dan M. Hall