Centrifugal fluid pump

• US 3,171,353 A
• Filed: 02/27/1962
• Issued: 03/02/1965
• Est. Priority Date: 02/27/1962
• Status: Expired due to Term

• Current Assignee: Kenton D. Mcmahan
• Original Assignee: Kenton D. Mcmahan
• Inventors: Mcmahan, Kenton D.
• Application Number:
  US04/175,940
• Time in Patent Office: 1,099 Days
• US Class Current: 415/199.3
• CPC Class Codes: F04D 1/066 the casing consisting of a plurality of annuli bolted together
• CPC Class Codes: F04D 13/06 the pump being electrically driven
• CPC Class Codes: F04D 17/12 Multi-stage pumps
• CPC Class Codes: F04D 17/122 the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 25/082 the unit having provision for cooling the motor
• CPC Class Codes: F04D 29/44 Fluid-guiding means, e.g. diffusers
• CPC Class Codes: F04D 29/5806 Cooling the drive system

Claims

1. A CENTRIFUGAL FLUID PUMP, COMPRISING AN IMPLELLER IN A PUMP STAGE, SAID PUMP HAVING AN AXIAL INLET FOR THE IMPELLER AND AN AXIAL OUTLET FOR SAID PUMP STAGE, AND MEANS FOR DIVIDING THE DISCHARGE OF THE IMPELLER INTO AN ODD NUMBER OF SEPARATE JETS OF EQUAL MAGNITUDE AND FOR DIRECTING SAID JETS RADIALLY INWARDLY TOWARDS SAID OUTLET WHILE MAINTAINING SAID JETS CIRCUMFERENTIALLY SPACED EQUALLY, SAID DIVIDING MEANS COMPRISING SEPARATE PASSAGEWAYS FOR SAID JETS RESPECTIVELY LEADING FROM THE DISCHARGE OF THE