Patents Assigned to Wapura Trinkwassereinigungs GmbH
  • Reverse osmosis water purification system having a permeate diaphragm pump
    Patent number: 5460716
    Abstract: A permeate pump located between a reverse osmosis water filter and an accumulator of a reverse osmosis water purification system. The permeate pump increases the pressure of the permeate water delivered to the accumulator. The permeate pump is driven by the pressure of the concentrate water that is introduced into the reverse osmosis filter.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: October 24, 1995
    Assignee: Wapura Trinkwassereinigungs GmbH
    Inventor: Ralf Wolbers