Electrically heated smoking system comprising at least two units
US9603388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2220/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrically heated smoking system is provided, including a secondary unit capable of receiving a smoking article having an aerosol-forming substrate. The secondary unit includes at least one heating element and an interface for connection to a primary power supply, and further includes a secondary power supply and secondary circuitry. The secondary circuitry is arranged to control supply of electrical power from the secondary power supply to the at least one heating element: (a) in a pre-heating mode during which the substrate temperature is increased to an operating temperature; (b) in a smoking mode, during which the substrate temperature is maintained at substantially the operating temperature; and (c) in a charging mode, so that the secondary power supply has sufficient charge to increase the substrate temperature to the operating temperature in the pre-heating mode and to maintain the substrate temperature at substantially the operating temperature during the smoking mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.