Cigarette lighter with automatic gas shutoff
US3985493A · kind A · utility
14Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1975 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Sep 18, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q25/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A lever formed at least partially as a bimetallic strip engages between the cover and the burner-valve of a gas-type cigarette lighter. When the cover is lifted this lever automatically opens the valve and forms a gas jet that may be ignited with the striker. A cup-shaped extension on the lever at the jet is heated by the flame on the lighter and conducts this heat to a thermodeformable tab on the lever so that after a predetermined amount of heating the tab deforms and disconnects the lever from the burner-valve, allowing this valve to close and shut off the gas flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.