Patents by Inventor Emmanuel Uzoma Okoroafor

Emmanuel Uzoma Okoroafor 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).

  • Pump with corrosion resistant shaft and rotor surfaces
    Patent number: 9695824
    Abstract: A pump shaft (10; 12) and a pump member (16; 18) mountable on the shaft for rotation with the shaft have respective contact surfaces that contact when the pump member is mounted on the shaft. At least one of the contact surfaces is formed such that corrosion products of the surface are substantially incompatible with the other contact surface so that joining of the shaft and pump member at the contact surfaces by corrosion is substantially prevented. The pump shaft and pump member may be parts of a dry pump.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: July 4, 2017
    Inventor: Emmanuel Uzoma Okoroafor
  • PUMPS
    Publication number: 20120171033
    Abstract: A pump shaft (10; 12) and a pump member (16; 18) mountable on the shaft for rotation with the shaft have respective contact surfaces that contact when the pump member is mounted on the shaft. At least one of the contact surfaces is formed such that corrosion products of the surface are substantially incompatible with the other contact surface so that joining of the shaft and pump member at the contact surfaces by corrosion is substantially prevented. The pump shaft and pump member may be parts of a dry pump.
    Type: Application
    Filed: August 31, 2010
    Publication date: July 5, 2012
    Applicant: EDWARDS LIMITED
    Inventor: Emmanuel Uzoma Okoroafor
  • VACUUM PUMP
    Publication number: 20120045322
    Abstract: A multi stage vacuum pump for pumping corrosive fluid with a first flow section of material less resistant to corrosion than the material of a second flow section downstream of the first flow section.
    Type: Application
    Filed: March 31, 2010
    Publication date: February 23, 2012
    Applicant: EDWARDS LIMITED
    Inventor: Emmanuel Uzoma Okoroafor
  • FKM OR FFKM MULTIPLE LAYERS SEAL
    Publication number: 20100239448
    Abstract: A vacuum pump comprises two stator components and a seal located between the components to provide a fluid-tight seal between the components. The seal comprises an annular plastics tube housing an annular reinforcing member, the tube being at least partially surrounded by a sleeve formed from one of FKM elastomer and FFKM elastomer.
    Type: Application
    Filed: June 23, 2008
    Publication date: September 23, 2010
    Inventor: Emmanuel Uzoma Okoroafor
  • Seal
    Publication number: 20100232999
    Abstract: A vacuum pump comprises two stator components (10, 14) and a seal (20) located between the components to provide a fluid-tight seal between the components. In one embodiment, the seal comprises a compliant annular body (24), an annular reinforcing member (26) embedded within the annular body, and a coating (28) of FFKM elastomer.
    Type: Application
    Filed: February 14, 2007
    Publication date: September 16, 2010
    Inventor: Emmanuel Uzoma Okoroafor
  • VACUUM PUMP
    Publication number: 20100178187
    Abstract: A dry vacuum pump comprises a stator component and at least one rotor component. To improve the tolerance of the pump to corrosive gases passing through the pump, the stator component and/or said at least one rotor component are formed from silicon-molybdenum (SiMo) ductile iron.
    Type: Application
    Filed: February 26, 2008
    Publication date: July 15, 2010
    Inventor: Emmanuel Uzoma Okoroafor
  • Coating
    Publication number: 20070071992
    Abstract: A method of forming a coating on a plastics component of a vacuum pump comprises the steps of applying a metallic layer to the component and forming the coating from the metallic layer by subjecting the metallic layer to electrolytic plasma oxidation.
    Type: Application
    Filed: July 12, 2004
    Publication date: March 29, 2007
    Inventor: Emmanuel Uzoma Okoroafor