Variable proportional metering apparatus
Liquid feeding control method
Mixture metering machine
Device for carrying out high precision dilutions and dosages of liquids, particularly biological liquids
Variable ratio dispensing apparatus
System for mixing concentrate and water to form fountain solution for offset printing presses Patent #: 4394870
ApplicationNo. 06/283560 filed on 07/15/1981
US Classes:222/63, Motor control222/135, With discharge assistant for each source417/429Adjustment with respect to common drive
ExaminersPrimary: Rolla, Joseph J.
Assistant: Noland, Kenneth
Attorney, Agent or Firm
International ClassesF04B 13/00 (20060101)
F04B 13/02 (20060101)
Foreign Application Priority Data1980-08-04 DE
AbstractThe apparatus consists of a plurality of piston pumps having preset displacement ratios. A motor mechanism is connected to each of the pumps. In addition, there is a control mechanism connected to each pump ensuring that all pistons execute their previous stroke completely before being reversed and that they all start their following stroke at exactly the same moment. Furthermore there is another control mechanism controlling the speed of each piston so that all pistons complete their respective strokes simultaneously. A mechanism for adjusting and varying the pump displacement is also provided.