Patents by Inventor Roger Bruce Anderson

Roger Bruce Anderson 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).

  • Dual seal arrangement for a centrifuge rotor tube cavity
    Patent number: 4087043
    Abstract: A dual seal arrangement for use in a rotor to ensure the retention of the fluid sample within the test tube cavity during high speed centrifugation in an ultracentrifuge. The dual seal arrangement provides not only a seal on the test tube within the rotor tube cavity, but also a seal on the rotor tube cavity itself. One seal provides a capping arrangement on the test tube to securely seal the fluid sample within the test tube which rests within the rotor tube cavity. A secondary seal is positioned within the rotor tube cavity above the capping seal to provide a complete seal of the rotor tube cavity above the test tube.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: May 2, 1978
    Assignee: Beckman Instruments, Inc.
    Inventors: Roger Bruce Anderson, John Robert Edwards