ELECTRICALLY AUTONOMOUS ELEVATOR SYSTEM
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United States of America Patent
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Nov 7, 2016
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Nov 7, 2016
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Abstract
An electrically autonomous elevator system includes an elevator car configured to move in a hoistway in a first direction of travel. The elevator car is connected to a counterweight assembly operating on a guide rail constructed and arranged to guide the counterweight along a hoistway in a second direction of travel. The counterweight includes a propulsion system configured to propel the counterweight and thereby the elevator car. The elevator also includes a power transfer system configured to transfer power to a power system on the counterweight, the power system configured to power the propulsion system independent of the power transfer system for at least a selected duration.
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