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Pulseless liquid delivery system using a pulsatile pump

  • US 5,971,713 A
  • Filed: 12/29/1998
  • Issued: 10/26/1999
  • Est. Priority Date: 01/07/1997
  • Status: Expired due to Fees
First Claim
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1. In a liquid delivery system of the type comprising a supply reservoir, a pump, and an outlet useful for supplying from said outlet a liquid under pressure, the improvement wherein there is interposed between said pump and said outlet a) a liquid accumulator means incorporating both pressure regulating means and volume sensing means and b) a control means responsive to said volume sensing means for providing substantially continuous modulation of power to a pump drive means whereby substantially constant and pulse-free liquid pressure is produced over a range of liquid flow from zero up to the maximum capacity of said pump.

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