Vented-at-temperature igniter
US9784548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vented pyrotechnic device is provided that hermetically seals the pyrotechnic material contained therein under ambient storage conditions, but vents upon exposure to elevated-temperature conditions at or below the outgassing temperature for the pyrotechnic material. The vent passage communicating the chamber containing the pyrotechnic material with the exterior of the device is initially sealed at ambient storage conditions by a temperature-sensitive material. When exposed to a predetermined temperature condition, the temperature-sensitive material undergoes a physical change unblocking the passage and permitting venting of off gases produced by the pyrotechnic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.