Patents by Inventor Donald Willison

Donald Willison 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).

  • Plate-type friction draft gear
    Patent number: 4305514
    Abstract: A high capacity plate-type friction draft gear is disclosed for utilization with railroad cars. The draft gear has a friction clutch mechanism with a special two-piece split spring seat, so that two individual spring forces can be exerted separately against the friction shoes to maintain operability of the friction clutch mechanism when the various plates become worn to the point of normal replacement.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: December 15, 1981
    Assignee: Midland-Ross Corporation
    Inventors: Andrey L. Zanow, Donald Willison
  • Cushioning pad
    Patent number: 4025063
    Abstract: A cushioning pad is provided in the form of a plate member having a cushion of resilient material secured to at least one side of the plate, the cushion having novel dowel and recess means for cooperating with the recess and dowel of an adjacent similar pad to facilitate accurate gathering and alignment of a group or stack of such pads.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: May 24, 1977
    Assignee: Midland-Ross Corporation
    Inventor: Donald Willison