Patents Assigned to Advanced Semiconductor Materials N.V.
  • Flow meter including improved laminar flow restrictor device therefor
    Patent number: 4450718
    Abstract: This disclosure relates to a flow meter having an improved flow restrictor for creating laminar flow in the flow meter. The improved flow restrictor is an adjustable bypass or flow restrictor which comprises a stack of alternate slotted discs and non-slotted, smaller diameter, washers with a diameter of 80% of the slotted discs, to form a plurality of micro-channels 0.09 mm square and 3 mm long which is a length to area ratio sufficient to assure laminar fluid flow through the flow meter.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: May 29, 1984
    Assignee: Advanced Semiconductor Materials N.V.
    Inventor: Gerrit A. Hartemink