Patents by Inventor Adnan M. Abdel-Fattah

Adnan M. Abdel-Fattah 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).

  • Axial and mixed flow fans and blowers
    Patent number: 4511308
    Abstract: A stall-free axial flow fan (10) has an impeller (12) with a plurality of radially extending blades (14) enclosed in a tubular casing (11) divided into a inlet portion (15), an intermediate portion (16) of larger diameter than the minimum diameter of the inlet portion (15) and an outlet portion (17) of a diameter no larger than the minimum diameter of the inlet portion (15). Impeller (12) is positioned with the leading edge of each blade (14) protruding into the intermediate portion (16) and the trailing edge protruding into the outlet portion (17). Inlet portion (15) may contain a plurality of radially extending vanes (19) each rotatable about a spindle (20) and extending between the stator (18) and the inner wall of the inlet portion (15). Intermediate portion (16) may contain a plurality of fixed vanes (21) disposed radially of the stator (18) and axially of the casing (11).
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: April 16, 1985
    Assignee: James Howden Australia Pty. Limited
    Inventors: Bruce A. Russell, Adnan M. Abdel-Fattah