Patents by Inventor Steven E. Williamson

Steven E. Williamson 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: 5054831
    Abstract: A gripping apparatus has at least two elongated piercing elements which slide in elongated collars or sleeves between open retracted positions and closed gripping positions. The piercing elements define an angle and they move toward the vertex of the defined angle when they move from the open position to the closed position. The orientation of the piercing elements and their path of travel are such that objects are reliably and securely held when the piercing elements are in their closed positions and positively released when the piercing elements are in their open positions. A sensor may be provided with the gripping apparatus to sense the presence or condition of the gripped object. The gripping apparatus is especially useful in grasping the root masses of plants for transplanting purposes.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: October 8, 1991
    Assignee: Rutgers University
    Inventors: Kuan-Chong Ting, Gene A. Giacomelli, David R. Mears, Witold P. Kabala, Shou-Jin Shen, Steven E. Williamson