Patents by Inventor Detlef Grabbe

Detlef Grabbe 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: 5167609
    Abstract: The peeling chamber in a head of a centrifuge has an upstream barrier chamber that seals it off from the atmosphere. A barrier disk secured to a peeler extends into the barrier chamber. Compressed gas is supplied to between barrier disk and peeler through a channel to prevent gas from escaping from the solvent. Another channel supplies liquid to the barrier chamber. Solvent from the periphery is supplied to the barrier chamber through a channel and simultaneously by the peeler through the barrier-liquid channel. An area of separation becomes established between the two liquids in the barrier chamber. If any solid particles enter the barrier chamber as the result of gas leaving the solvent, they will dissolve again in the solvent in the periphery of the barrier chamber and will be prevented from making the chamber malfunction.
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: December 1, 1992
    Assignee: Westfalia Separator AG
    Inventors: Georg Graw, Werner Kohlstette, Herbert Hohmann, Detlef Grabbe
  • Patent number: 4950220
    Abstract: A throughput centrifuge for the industrial production of proteins from human blood plasma, with a cylindrical centrifuge drum provided with several concentric chambers that communicate at the bottom and with the blood plasma or similar material being supplied to the central zone and a liquid phase continuously extracted from the outer zone. The drum accordingly accommodates plastic containers constituting concentric annular or annular-segmental chambers that communicate through at least one channel at the bottom, wherein the container or containers toward the axis that the drum rotates around have an inlet connection and the container or containers in the outer zone of the drum have an outlet channel at the top, and wherein the outer surfaces of the containers, of the communicating channel or channels, of the outlet channel or channels, and of the inlet connection or connections rest against the inner surfaces of the drum and against structures that can be inserted into and removed from the drum.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: August 21, 1990
    Assignee: Westfalia Separator AG
    Inventors: John R. Wells, Gunthard Pautsch, Detlef Grabbe, Werner Kohlstette