Patents by Inventor Dieter Birkenstack

Dieter Birkenstack 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).

  • Multi-chambered fluid balancing apparatus
    Patent number: 3950897
    Abstract: A balancing apparatus, particularly for a grinding wheel, whereby the wheel has four chambers disposed around its axis of rotation with each chamber connected to one face of the ring shaped container by a slot formed in a circular recess at a different radius so that the wheel can be balancing by injecting cooling fluid or the like into the slots to temporarily add fluid to selected chambers.
    Type: Grant
    Filed: November 12, 1974
    Date of Patent: April 20, 1976
    Assignee: Gebr. Hofmann KG
    Inventors: Dieter Birkenstack, Otto Jager