Patents by Inventor Duane E. Roiger

Duane E. Roiger 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: 5222562
    Abstract: An attachment for use with an agricultural implement to protect a row of emergent plants growing in a field. The device includes a shield which protects the plants from accumulations of soil, trash, and other debris. The shield is mounted between one or more claws of the implement, on one hand, and the row of plants to be protected on the other hand. Means, such as a motor, are provided to drive the shield in a plane generally parallel to the row of plants. As the shield is positively rotated, a periphery of the shield passes closely proximate the surface of the ground in which the row of plants is located. Such driving of the shield is in a direction in which the shield would rotate if it were allowed to freewheel and were made to rotate as a result of its engagement with the ground.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: June 29, 1993
    Inventor: Duane E. Roiger