Patents by Inventor Yawn David H.

Yawn David H. 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).

  • Centrifuge
    Patent number: 4795419
    Abstract: A centrifuge is provided which has a stationary core and a bowl rotatively mounted about the core. The bowl can be configured so that it does not taper inwardly from top to bottom. The bowl has an upwardly extending neck which receives the stationary core. To provide a seal between the core and bowl, a lip seal can be employed which is emplaced about an upwardly extending nut formed integrally of the core or a face seal can be employed between a shoulder of the nut and a shoulder of the neck.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: January 3, 1989
    Assignee: Kardiothor, Inc.
    Inventors: Yawn David H., Louis W. Feldman