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1 results about "Parapet" patented technology

A parapet is a barrier which is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto (parare "to cover/defend" and petto "breast"). The German equivalent Brüstung has the same meaning. Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the edge line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall. Parapets were originally used to defend buildings from military attack, but today they are primarily used as guard rails and to prevent the spread of fires. In the Bible the Hebrews are obligated to build a parapet on the roof of their houses to prevent people falling .

Voice coil motor with anti-torsion mechanism

InactiveCN103353659AImprove the problem of insufficient torsion resistanceHigh precisionMountingsEngineeringVoice coil
The present invention discloses a voice coil motor with an anti-torsion mechanism. The motor comprises a lens seat and a base, wherein the lens seat is peripherally provided with one or a plurality of structural units; the base is provided with one or a plurality of parapet structures corresponding to the structural units and arranged around the structural units; and when the lens seat and the base are combined for installation, the parapet structures and the structural units cooperate with each other, thereby forming the anti-torsion mechanism. According to the invention, by the anti-torsion mechanism of the voice coil motor, the problem of insufficiency of anti-torsion capacity of the voice coil motor is completely improved, and the stability in quality of the voice coil is maintained while the requirements of high precision and high stability are ensured.
Owner:YIXING GUIXIN MAGNETOELECTRIC HI TECH
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