Patents by Inventor Richard W. Von Drehle

Richard W. Von Drehle 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).

  • Vibrating screen assembly with improved frame
    Patent number: 5967336
    Abstract: A vibrating screen assembly having a frame with a pair of opposed sides and a pair of opposed ends. The frame includes a planar surface and an upstanding lip extending vertically from the planar surface to form a rim enclosure. A leg extends downward vertically from the planar surface in a direction away from said lip. A ledge extends perpendicularly from the downward leg. A plurality of tubular cross supports rest on the ledge and are connected to the leg. A perforated plate with a plurality of screen cloths thereon is positioned within the rim enclosure and secured to the planar surface of the frame.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: October 19, 1999
    Assignee: Southwestern Wire Cloth, Inc.
    Inventors: Terry L. Baltzer, Robert E. Norman, Richard W. Von Drehle