US PATENT SUBCLASS 49 / 41
ARCUATE CLOSURE ROTATES ACROSS ARCUATE OPENING

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

41ARCUATE CLOSURE ROTATES ACROSS ARCUATE OPENING

DEFINITION

Classification: 49/41

(under the class definition) Device comprising a closure having a curved edge surface, and a passage blocking member

having an annular opening therein, and wherein said closure moves about an axis concentric with the axis of the opening.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39, for a radially movable closure for plural openings.