Patents Assigned to EXTAL LTD.
  • Curtain wall drain opening apparatus
    Patent number: 10753085
    Abstract: Curtain wall based drain opening apparatus comprises a drainage element extending outwardly from, and in fluid communication with, a concealed horizontal water flow channel associated with a stationary first frame element of an inwardly pivotable window assembly and adapted to receive infiltrated water, wherein the drainage element passes through a second frame element which is laterally spaced from two adjacent fixed panels of a curtain wall and is exposed to atmospheric air.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: August 25, 2020
    Assignee: EXTAL LTD.
    Inventor: Michael Privan