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Electronic smoke

  • US 9,072,321 B2
  • Filed: 06/29/2010
  • Issued: 07/07/2015
  • Est. Priority Date: 09/18/2009
  • Status: Active Grant
First Claim
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1. An electronic smoke apparatus comprising an inhale detector, a controller and a smoke effect generating circuitry, wherein the inhale detector comprises an air-flow sensor with a capacitor which forms part of an oscillator circuit and is arranged to detect direction and rate of air flow through the smoke apparatus, and the controller is arranged to operate the smoke effect generating circuitry to generate smoking effect when the air flow is in a direction corresponding to inhaling through the smoke apparatus and the air flow rate reaches a predetermined threshold, and wherein the controller is arranged to measure the oscillation frequency of the oscillation circuit to determine the air flow rate and direction.

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