Patents by Inventor William J. Crone, Jr.

William J. Crone, Jr. 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).

  • Material separating machine
    Patent number: 4319991
    Abstract: Apparatus for separating a composite of three materials into their particular groups includes a first screen (17) which permits the group of the smallest sized material to pass therethrough. The materials not passing through the screen (17) are fed to a trough (21). Second screens (23) are provided near the end of the trough which permits the group of the mid-sized materials to pass therethrough. The group of the largest sized materials move to and through a discharge spout (25) at the end of the trough (21).
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 16, 1982
    Assignee: Midwestern Industries, Inc.
    Inventors: William J. Crone, Jr., John P. Wright