Valve for downhole pump

  • US 6,830,441 B1
  • Filed: 11/07/2002
  • Issued: 12/14/2004
  • Est. Priority Date: 11/15/2001
  • Status: Active Grant
First Claim
Patent Images

1. A cage for use in a valve of a downhole pump, comprising:

  • a) a tubular wall having a passage extending between two ends, the passage comprising a ball chamber, the ball chamber being bounded by the wall, a perforated member and a throat that opposes the perforated member;

    b) the throat comprising a stop for receiving a seat;

    c) a raceway in the ball chamber extending from the throat toward the perforated member and structured and arranged to receive a ball, the raceway having channels communicating therewith, the raceway skewing away from a longitudinal axis of the ball chamber from the throat toward the perforated member, the longitudinal axis extending between the two ends.

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