ADJUSTABLE-BARREL CURLING IRON
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United States of America Patent
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app pub date -
Dec 22, 2010
filing date -
Sep 11, 2009
priority date (Note) -
Abandoned
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Abstract
A radially adjustable barrel, a barrel-adjustment assembly, a radially adjustable heater assembly, and a radially adjustable distal-tip assembly. The barrel is radially adjustable between expanded and contracted positions having different diameters. The barrel-adjustment assembly includes a rotary ring defining a spiral cam guide and includes a cam follower attached to the barrel. The heater assembly includes a post, at least one heater, and at least one spring mounting the heater to the post and biasing the heater radially outward. In use, rotating the ring rotates the spiral cam guide, which displaces the cam follower radially inward or outward, which in turn displaces the outer end of the barrel radially inward or outward to decrease or increase the diameter of the barrel. As the diameter of the barrel is adjusted, the heaters remain in contact with the barrel due to the outwardly biasing influence of the spring.
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