Patents by Inventor Michael K. Shelley

Michael K. Shelley 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).

  • Security window adapted to prevent forced entry
    Patent number: 5860371
    Abstract: A security window having one or more vertically movable panels, suitably of a transparent, rigid plastic that is bullet-resistant. The security window is useful for a clerk in a convenience store. The security window is provided with a safety mechanism that is operatively associated with the one or more vertically movable panels, and prevents direct vertical manual movement thereof by a would-be robber.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: January 19, 1999
    Assignee: Protec Company
    Inventor: Michael K. Shelley
  • Security window adapted to prevent forced entry
    Patent number: 5636579
    Abstract: A security window having one or more vertically movable panels, suitably of a transparent, rigid plastic that is bullet-resistant. The security window is useful for a clerk in a convenience store. The security window is provided with a safety mechanism that is operatively associated with the one or more vertically movable panels, and prevents direct vertical manual movement thereof by a would-be robber.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: June 10, 1997
    Assignee: Protec Company
    Inventor: Michael K. Shelley