Patents by Inventor Robert Grisham

Robert Grisham 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).

  • Sheet metal brake press
    Patent number: 9687896
    Abstract: One embodiment of a brake press for bending and forming sheet metal is disclosed. The brake press includes a movable frame including an upper cross member and a lower cross member and a stationary press positioned between the upper and lower cross members. A punch edge secured to the upper cross member moves towards and away from a die positioned on the stationary press to bend a sheet metal workpiece into a desired configuration, In some embodiments, a hydraulic control assembly provides precise and accurate control of the brake press.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 27, 2017
    Assignee: GrishamWorks, LLC
    Inventors: Robert Grisham, Keith Smith
  • SHEET METAL BRAKE PRESS
    Publication number: 20160296988
    Abstract: One embodiment of a brake press for bending and forming sheet metal is disclosed. The brake press includes a movable frame including an upper cross member and a lower cross member and a stationary press positioned between the upper and lower cross members. A punch edge secured to the upper cross member moves towards and away from a die positioned on the stationary press to bend a sheet metal workpiece into a desired configuration, In some embodiments, a hydraulic control assembly provides precise and accurate control of the brake press.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 13, 2016
    Inventors: Robert Grisham, Keith Smith