Patents by Inventor Joseph B. Kumpf

Joseph B. Kumpf 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).

  • Dragline bucket line protection device
    Patent number: 5140761
    Abstract: In a support assembly for an excavating dragline bucket controlled by a hoist line and a drag line, the bucket having opposite side walls and an open forward end, a line protection device includes a sleeve for encircling the hoist line adjacent the bucket sidewalls for preventing direct contact between the hoist line and the bucket sidewalls. A sleeve also encircles the drag line adjacent the point of attachment between the drag line and the bucket forward end for preventing direct contact between the drag line and excavating material received by the bucket.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: August 25, 1992
    Assignee: Dresser Industries, Inc.
    Inventors: Ralph E. Coffman, Joseph B. Kumpf