Lid with bistably valved drinking spout
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United States of America Patent
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app pub date -
Nov 12, 2004
filing date -
Sep 17, 2004
priority date (Note) -
Abandoned
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Abstract
A lid with a raised drink-through spout (24) has a hinged flap valve (28) covering a drink opening (26') formed in the surface of the spout. The user opens the valve by pushing the top of a post (28P) on the flap (28F) down. A hinge (28H) holding the flap urges the flap to return to its closed and horizontal orientation, but the top edge of the post will catch under a catch edge of the opening opposite the hinge. This holds the flap open. The user can then drink from the spout. To re-close the valve, the user applies inward force to the outer sidewall (16) below the catch edge. This causes the wall to deflect inwardly and the catch edge to distort outwardly, widening the hole. This releases the post, allowing it to move upwardly so that the flap can spring back to its horizontal and closed position.
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