Patents by Inventor Geoffrey H. Williams

Geoffrey H. Williams 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).

  • Device for removing material from the free surface of a body of liquid using unequal length linkages
    Patent number: 5051180
    Abstract: A device for removing material from the free surface of a contained body of liquid comprises a scoop supported from a fixed member by two links that carry a substantially horizontal arm on which the scoop is mounted so as to be rotatable about the axis of the arm. The connections of the links to the fixed member and to the arm are pivotal connections at the four corners of a quadrilateral. First actuating means pivots the link about its connection to the fixed member thereby to move the arm to and fro substantially in a horizontal plane. Second actuating means rotates the scoop about the axis of the arm.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: September 24, 1991
    Assignee: Sheppard Ingot Castings Machines Limited
    Inventor: Geoffrey H. Williams