Patents Assigned to Neumann Industries, Inc.
  • Method and apparatus for processing sheet metal blanks and continuous strip
    Patent number: 5188135
    Abstract: Blank washer for cleaning individual sheet metal blanks with a drawing compound liquid suitable for press operations which employs pressurized liquid vortex diffuser means to replace conventional scrubbing brushes. An enclosure with air knives at entrance and exit to the blank washer provides closed loop recirculating of both air and cleaning liquid, which is filtered and repumped to plenum chambers feeding individual vortex diffuser cylindrical outlets which discharge liquid vortexes in close proximity to the passing sheet metal.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: February 23, 1993
    Assignee: Neumann Industries, Inc.
    Inventors: John W. Neumann, J. Scott Neumann