Patents by Inventor Wilfried Zorner

Wilfried Zorner 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).

  • Patent number: 6017204
    Abstract: In a totally oil-free spiral compressor (1) with high suction volume flows and compression ratio, useful in particular to generate compressed air for rail vehicles, the spirals are arranged on one side only and measures are taken to compensate for the high axial forces that act on the spiral bearings. Compression chambers (35) arranged with an axial gap between the spirals (7, 9) of the spiral compressor (1) are fed by compression pockets (45) and support the nested spirals against each other. The compression chambers (35) are preferably arranged between a compression crown (15) joined to the driving spiral (7) and a ring wheel (37) of the forcibly driven second spiral (9), so that axial counterforces compensate for the axial forces that act upon the bearings (29, 33) of both spirals.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: January 25, 2000
    Assignee: Knorr-Bremse Systeme Fur Schienenfahrzeuge GmbH
    Inventors: Christian Holzapfel, Wilfried Zorner, Robert Frank