Patent ID: 9551153
Date: 2017-01-24
CPC Classifications: B01D,E02B,E04D

Claim:
1. A scupper door system, the system comprising: a scupper frame defining a passageway between an interior side and an exterior side of a parapet positioned on a roof; a door mounted within the frame at a pivot, wherein the door is rotatable about the pivot within the passageway between a closed position and an open position, wherein in the closed position the passageway is blocked and in the open position the passageway is open to permit passage of water therethrough; a latch mechanism configured to retain the door in the closed position and triggerable by presence of a preset water condition at the interior side to release the door from the closed position and allow the door to rotate to the open position in a first direction; and wherein the scupper door system is configured to prevent the door from rotating to the open position in a second direction opposite of the first direction where the latch mechanism comprises a retention pin and a retention slot, wherein the retention pin is positioned to be received within the retention slot to retain the door in the closed position, and wherein in the presence of the preset water condition the retention pin is configured to be withdrawn from the retention slot to release the door.