MEDICAL OR DENTAL HANDHELD ELEMENT WITH ANTI-TWIST PROTECTION
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United States of America Patent
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Issued Date -
Oct 23, 2008
app pub date -
Apr 22, 2008
filing date -
Apr 23, 2007
priority date (Note) -
Abandoned
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Abstract
A medical or dental handheld element has a rotatably arranged rotary part, at least one roller bearing for bearing support of the rotatably arranged rotary part, the roller bearing having at least one rotatable roller bearing part that is co-rotational with the rotary part and at least one stationary roller bearing part that is stationary in relation to the rotary part, and an anti-twist device or anti-rotation element provided to restrict the stationary roller bearing part from rotating. The anti-twist device comprises a polygonal, generally arc-shaped, open metallic anti-twist device. A handheld element with this anti-twist device is less sensitive to the effects of sterilization or cleaning processes. Also disclosed is a method for manufacturing such a handheld element.
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