Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 24, 2007
Patent Application Number
11010099
Date Filed
December 10, 2004
Patent Primary Examiner
Patent abstract
An elevator hall call device inductively receives an electrical signal from an interlock wiring circuit by means of a coupling device. The elevator hall call device comprises a capacitive device which stores electrical charge based on the electrical signal received from the interlock wiring circuit by means of the coupling device. Hall call circuitry sends and receives signaling information between at least one elevator controller over the interlock wiring circuit, where the hall call circuitry is coupled to the capacitive device for receiving electrical power based on the stored electrical charge in the capacitive device.
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