Movable or removable closures – Threshold – With drain or vent
Patent
1991-02-04
1991-11-26
Kannan, Philip C.
Movable or removable closures
Threshold
With drain or vent
49470, E06B 170
Patent
active
050672797
ABSTRACT:
A self draining door threshold includes a wedge-shaped silicone check valve in communication with a water reservoir on the interior side. The check valve is normally closed but will yieldably open in response to water pressure which overcomes the resilience of the silicone material and the air pressure on the top wall of the wege-shaped passageway. The check valve functions as a seal against incoming air but will open to allow escape of water as needed. The silicone material seals around foreign material in the valve making it air tight. The bottom edge of the door includes moisture resistant material having an upwardly extending portion received in a groove. The exterior side of the door is also covered with moisture resistant material which has inwardly extending portions received in a vertical groove between abutting panels. A moisture resistant plate extends along the bottom edge of the door and has downwardly extending portions engaging the weather seal on the threshold on the exterior side and a wood portion of the threshold on the interior side. The plate directs water from the vertical groove outwardly of the door.
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patent: 4831779 (1989-05-01), Kehrli et al.
patent: 4999950 (1991-03-01), Beske et al.
Kannan Philip C.
Rolscreen Company
LandOfFree
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