Patents by Inventor Randolph L. Zink

Randolph L. Zink 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).

  • Apparatus and method for spot planting seedlings
    Patent number: 4459924
    Abstract: An apparatus and method for spot planting seedlings in which planting instrumentalities intermittently engage ground and plant seedlings at spaced spots. The planting instrumentalities include a site preparation pulverizer, seedling insertion dibble plates, and an impacting packer head for compressing soil. Mechanism is provided for sequentially actuating the various planting instrumentalities and for reducing to zero the relative traversing velocity between the planting instrumentalities and a spot of ground engaged thereby.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: July 17, 1984
    Assignee: North Carolina State Univ. at Raleigh
    Inventors: Awatif E. Hassan, William H. Haddock, Randolph L. Zink