Cutting unit with guard teeth and hair-cutting device
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jan 31, 2013
app pub date -
Mar 19, 2012
filing date -
Dec 12, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
To minimize the risk for injuries due to hooked hair catching teeth, but still have a reasonable hair-cutting efficiency, a cutting unit for a hair-cutting device having two blades moving relatively to each other with at least one of the blades being toothed is proposed, wherein at least some teeth have a larger cross-sectional area at their free end than at their end making the junction with the blade, wherein the larger cross-sectional area is 0.3 mm2 or more and wherein the shape of the larger cross-sectional area is such that the tooth surface oriented to face the surface with hair to be cut when cutting has a larger distance to the middle axis than the equivalent surface of the blade-side-end.
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