Smoking article with a valve
US10212968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2014 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Oct 31, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article is provided, including a combustible heat source having opposed front and rear faces; one or more airflow channels extending from the front face to the rear face of the combustible heat source; an aerosol-forming substrate downstream of the rear face of the combustible heat source; and a thermostatic bimetal valve located between the rear face of the combustible heat source and the aerosol-forming substrate, wherein the thermostatic bimetal valve is arranged to deform from a first position, in which the valve substantially prevents or inhibits fluid communication between the one or more airflow channels and the aerosol-forming substrate, to a second position, in which the one or more airflow channels and the aerosol-forming substrate are in fluid communication, when the thermostatic bimetal valve is heated to above a threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.