Patents by Inventor Michael W. Block

Michael W. Block 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: 6234453
    Abstract: Winch apparatus for raising and holding a rolling steel door includes a wheeled base with telescoping members extending upwardly from the base. A hand cranked winch raises and lowers the telescoping members, while a reversible electric motor is used to power a separate winch for raising and lowering a load secured to an arm extending outwardly from an innermost telescoping member. The arm is disposed against a building when the apparatus is in position to raise the rolling steel door for its installation.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: May 22, 2001
    Inventor: Michael W. Block