Patents by Inventor Westley D. Peters

Westley D. Peters 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).

  • Low insertion force tip/mandrel
    Patent number: RE42606
    Abstract: A pipette assembly for automatic pipetting machines including a stepped mandrel and tip for providing a minimum contact seal between the pipette tip and mandrel. The mandrel includes a first cylindrical portion with a first exterior diameter and a second cylindrical portion with a second exterior diameter. Raised bands on the first and second cylindrical portions contact the interior wall of the pipette tip to form seals. Because only a portion of the mandrel, specifically the seal portions, contacts the pipette tip, lower forces are required to insert the tip onto the mandrel.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: August 16, 2011
    Assignee: Beckman Coulter, Inc.
    Inventors: David W. Bell, Westley D. Peters