Patents by Inventor Richard J. Frohman

Richard J. Frohman 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).

  • Method and apparatus for separating material
    Patent number: 4555330
    Abstract: The method and apparatus for separating materials includes a feed splitting assembly (27) which evenly divides the materials to be separated into equal parts for inputs to a like plurality of screen assemblies (16, 17, 18). These inputs are evenly distributed across the width of some of the screen assemblies (17, 18) by manifolds (44, 51). One of the screen assemblies (16) can receive the input directly through an aperture (40) in the feed splitting assembly (27). The material not passing through the screen assemblies (16, 17, 18) is collected at one location and the material passing therethrough is transmitted to a common discharge spout (55).
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: November 26, 1985
    Assignee: Midwestern Industries, Inc.
    Inventors: Masataka Tsutsumi, Richard J. Frohman