Patents by Inventor Alex S. Joseph

Alex S. Joseph 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).

  • High efficiency, low axial profile, low noise, axial flow fan
    Patent number: 5326225
    Abstract: The fan blades have a particular geometry that combines high efficiency, low axial profile, and low noise in an axial flow fan. The fan also comprises a circular outer band that coacts with a surrounding shroud structure to form a labyrinth air seal. The shroud structure comprises two parts that cooperatively define a radially inwardly open groove within which a flange of the fan band is received to form the labyrinth seal.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: July 5, 1994
    Assignee: Siemens Automotive Limited
    Inventors: William P. Gallivan, Haran K. Periyathamby, Alex S. Joseph