Patent ID: 6478552
Filing Date: 2002-11-12
Classification: F04B

Abstract:
A pump for conveying a stock fluid by supplying and expelling a motivating fluid, the pump comprising:a plurality of units, each unit including: a body having a cavity; a movably biasing boundary disposed within the cavity thereby defining a motivating-fluid cell and a stock-fluid cell, each cell volume variable by the movement of the movably biasing boundary within the cavity; a motivating-fluid opening in the body for fluid communication with the motivating-fluid cell; a stock-fluid opening in the body for fluid communication with the stock-fluid cell; a motivating-fluid valve in fluid communication with the motivating-fluid opening to the body; a stock-fluid valve in fluid communication with the stock-fluid opening to the body; a motivating-fluid line and motivating-fluid discharge line in fluid communication with the motivating-fluid valve and a stock-fluid line and a stock-fluid discharge line in fluid communication with the stock-fluid valve; and wherein the motivating-fluid line of each unit comes from the same source, the motivating-fluid discharge line of each unit directs to the same location, the stock-fluid line of each unit comes from a plurality of different sources, and the stock-fluid discharge line of each unit directs to a plurality of different locations.