Wireless power transmission systems for elevators

  • US 9,837,860 B2
  • Filed: 05/05/2015
  • Issued: 12/05/2017
  • Est. Priority Date: 05/05/2014
  • Status: Active Grant
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First Claim
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1. A wireless power transmission system for an elevator, the system comprising:

  • at least two wireless power sources disposed at intervals along a wall of an elevator shaft and coupled to a power supply; and

    at least one wireless power receiving device configured to be mounted to an exterior of an elevator cab and to be coupled to a load onboard the elevator cab,wherein during operation, the at least two wireless power sources are configured to generate an oscillating magnetic field to transfer wireless energy to the at least one wireless power receiving device; and

    wherein lengths of the intervals between the at least two sources are determined by an amount of power delivered to the elevator cab.

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