Patents Assigned to AB Manus
  • Pulsator
    Patent number: 5207177
    Abstract: A pulsator has two valve devices (1, 2), each of which is adapted to alternately subject a pulsation space to two different pressures. In order to avoid the two valve devices (1, 2) from disturbing each other during the alternations between the two pressures a third valve device (23) is arranged, for closing communication between one of the valve devices and the lower one of said two pressures, when the other valve device is operated to alternate the pressure in the pulsation space from the lower one to the higher one of said two pressures.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: May 4, 1993
    Assignee: AB Manus
    Inventor: Magnus Lidman