BELT FOR DRIVING SYSTEMS, IN PARTICULAR A BELT-LIKE TENSILE ELEMENT FOR ELEVATOR SYSTEMS, HAVING FIRE-INHIBITING PROPERTIES
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United States of America Patent
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Sep 6, 2012
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May 11, 2010
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Abstract
A belt for driving systems, including a belt body made of a polymeric material having elastic properties, which comprises a cover layer as a back of the belt and a foundation having a force-transmission zone, and, a tensile reinforcement embedded in the belt body. The belt body is made of at least two different materials A and B, namely: a first material A, which is provided with a fire-inhibiting additive and is used in the belt body everywhere the high mechanical properties are not required; and, a second material B, which contains little or none of a fire-inhibiting additive and is used in the area of the belt body that is subjected to great mechanical stress. The belt is used in particular as a tensile element for elevator systems.
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