Quick priming centrifugal pump

• US 3,291,058 A
• Filed: 04/16/1965
• Issued: 12/13/1966
• Est. Priority Date: 04/16/1965
• Status: Expired due to Term

• Current Assignee: Stanley B. Mcfarlin
• Original Assignee: Stanley B. Mcfarlin
• Inventors: Mcfarlin, Stanley B.
• Application Number:
  US04/448,810
• Time in Patent Office: 606 Days
• US Class Current: 417/423.1
• CPC Class Codes: F04D 9/006 by venting gas or using gas valves

Claims

1. THE METHOD OF PRIMING A SELF-PRIMING CENTRIFUGAL PUMP WHICH COMPRISES THE STEPS OF MOVING A QUANTITY OF LIQUID FROM THE SUCTION CHAMBER OF THE PUMP INTO ITS DISCHARGE CHAMBER, THEREBY CAUSING LIQUID TO RISE IN THE INLET PIPE OF THE PUMP, AND THEN ALLOWING APPROXIMATELY THE SAME QUANTITY OF LIQUID INTO ITS SECTION CHAMBER WHILE CHAMBER OF THE PUMP INTO ITS SECTION CHAMBER WHILE MAINTAINING THE LIQUID IN SUBSTANTIALLY ITS ATTAINED POSITION IN THE INLET PIPE AND REPEATING SAID STEPS IN SEQUENCE UNTIL THE INLET PIPE AND SECTION CHAMBER ARE FILLED WITH LIQUID.

12. A CENTRIFUGAL PUMP SYSTEM COMPRISING A SELFPRIMING CENTRIFUGAL PUMP HAVING SUCTION AND DISCHARGE CHAMBERS, AN IMPELLER, AN INLET PIPE, A VALVE TO CHECK BACK FLOW OF LIQUID IN SAID PIPE, MOTOR MEANS TO ACTUATE SAID IMPELLER, CONTROL MEANS TO ACTUATE AND DEACTUATE SAID MOTOR MEANS, AND MEANS TO BLEED GAS FROM SAID SUCTION CHAMBER WHILE THE IMPELLER IS DEACTUATED.