(under subclass 404) Device wherein the mounting means includes a closure guiding and receiving slot in one side of a walled space, and a plate on the closure projecting through the slot and serving to deflect and retard movement of a fluid, e.g., air, around the edge of the closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
436+, for a rib and slot type guide in which the rib or slot edges are a diverse or spring bearing surface.
437+, for a closure mounted rib, guided in its reciprocation by a slot in the frame.
442+, for a fixed rib or plate engaging a slot in a closure.
