Patents by Inventor David E. Dalke

David E. Dalke 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).

  • Fluid probe washing apparatus and method
    Patent number: 5408891
    Abstract: A probe washing apparatus including a probe having a tip and a wash collar having a bore coaxially aligned with the probe, the wash collar including ports for applying a vacuum and a wash liquid to the wash collar bore. The probe may be displaced vertically with respect to the wash collar to aspirate and dispense liquids, and the wash collar and probe are displaced together laterally. The steps of washing the probe tip include raising the probe to a position with the probe tip within the bore, applying vacuum to the bore, flushing the interior of the probe, and flushing the exterior of the probe.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: April 25, 1995
    Assignee: Beckman Instruments, Inc.
    Inventors: Duane G. Barber, David E. Dalke