Vaporization device systems and methods
US10912331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Nov 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/022
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Vaporization devices and methods of operating them are described. In particular, apparatuses with a resistive heating element, electrical circuitry for measuring a voltage between the resistive heating element and a reference resistor, and a microcontroller for controlling a temperature of the resistive heating element in response to a determined resistance are described. The electrical circuitry may comprise the reference resistor, a first switch operable to interrupt the flow of current from the power source through the resistive heating element, a second switch operable to add the reference resistor in series with the resistive heating element when the flow of current from the power source through the resistive heating element is interrupted by operation of the first switch, and a voltage divider configured to measure a voltage between the resistive heating element and the reference resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.