Patents by Inventor William E. Donner

William E. Donner 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).

  • Open end spinning spindle
    Patent number: 3958846
    Abstract: A bearing assembly for the rotor shaft of an open-ended spinning machine in which the bearing housing is formed with a bypass passage to allow air flow resulting from pressure differentials between the two ends of the bearing housing to bypass the bearing elements, thereby prolonging their life. In another embodiment, the bypass passage is formed in the rotor shaft.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: May 25, 1976
    Assignee: The Barden Corporation
    Inventor: William E. Donner