Patents by Inventor Thomas A. Roark

Thomas A. Roark 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).

  • Head gate
    Patent number: 4059073
    Abstract: A multi-action head gate is disclosed which, by actuation of a single element, selectively opens a passageway or closes it about the neck of an animal for secure engagement therewith. The engagement apparatus consists primarily of a vertically movable ear block and a pair of opposing pivotable jaw locks, all three of which simultaneously move to engage or release the animal.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: November 22, 1977
    Inventor: Thomas A. Roark