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Method and apparatus for parking lot metering using activation codes

  • US 10,000,128 B2
  • Filed: 03/11/2011
  • Issued: 06/19/2018
  • Est. Priority Date: 10/19/2009
  • Status: Active Grant
First Claim
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1. A system for charging electric vehicles comprising:

  • a keypad for a user to enter a code, said code to have been provided to the user in a transaction that established a time interval of charging;

    a controller having communication with said keypad, said controller to validate that said code is issued to represent authorization for the time interval of charging, said controller having a timer to determine an expiration of the time interval, wherein, in response to said code being validated, said controller initiates the timer and enables a charger for an electric vehicle, the controller further disabling the charger when the time interval expires;

    wherein the controller determines a duration of said time interval from said code and sets said timer for said duration in response to said code, and said code indicates the duration for said time interval.

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