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Feeding pump device of volume tube continually metering type

  • US 20070134107A1
  • Filed: 01/12/2005
  • Published: 06/14/2007
  • Est. Priority Date: 02/06/2004
  • Status: Abandoned Application
First Claim
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1. A feeding pump device of volume tube continually metering type comprises:

  • a volume tube (1) provided with metering volume section (11), a dragging mechanism (2), and an unilateral inlet valve (8) and an unilateral outlet valve (7). Said volume tube (1) particularly have two unilateral inlet valves (8) and two unilateral outlet valves (7) provided in two ends of inner wall thereof respectively. A piston (9) connected to the said dragging mechanism (2) is provided in said volume tube (1).

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