Patents by Inventor Erwin Schmitz

Erwin Schmitz 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).

  • Polishing device
    Patent number: 5088241
    Abstract: A polishing device has a working area into which cold gas is fed continuously in order to cool the partial work-piece surfaces where work is to be performed to a temperature at which no changes occur to the work-piece surface except for polishing.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: February 18, 1992
    Assignee: MG
    Inventors: Johannes Lubbering, Peter Ihme, Jurgen Busse, Erwin Schmitz, Wolfgang Volker
  • Polishing device
    Patent number: 5088242
    Abstract: A polishing device has a working area into which cold gas is fed continuously in order to cool the partial work-piece surfaces where work is to be performed to a temperature at which no changes occur to the work-piece surface except for polishing.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: February 18, 1992
    Assignee: Messer Griesheim
    Inventors: Johannes Lubbering, Peter Ihme, Jurgen Busse, Erwin Schmitz, Wolfgang Volker
  • Tube mill partition
    Patent number: 5016826
    Abstract: The invention relates to a tube mill partition as a transfer or discharge partition. With a view to reducing wear and facilitating maintenance, separate wearing beams are used and the latter or the slotted plates can be easily replaced without any further assembly opening.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: May 21, 1991
    Assignee: Christian Pfeiffer Maschinenfabrik GmbH & Co., KG
    Inventors: Ralph Michelsen, Udo Schulze-Brockhausen, Herbert Weit, Erwin Schmitz
  • Rotary basket air classifier
    Patent number: 4661244
    Abstract: The invention relates to a rotary basket air classifier. A favorable predispersion of the material to be classified, particularly in the case of an upwardly directed spent classifying air line has always been problemmatical with such classifiers. According to the invention, the material to be classified is distributed over several stages, aided by dispersing blades and a higher drawing-off capacity of the spent classifying air is permitted by the branching of the drawing-off line.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: April 28, 1987
    Assignee: Firma Christian Pfeiffer
    Inventors: Ernst W. Hanke, Benno Bonk, Erwin Schmitz