Ventilation closure system
US10898743B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Apr 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/002
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A ventilation closure system includes a damper, a shape memory alloy actuator, and a heating device. The shape memory alloy actuator is coupled to the damper. The shape memory alloy actuator has a first state in which the damper is positioned to permit airflow in the duct and has a second state in which the damper is positioned to obstruct the airflow in the duct. The shape memory alloy actuator is configured to change from the first state to the second state responsive to the shape memory alloy actuator attaining a first temperature responsive to heat released by an exothermic reaction in a compartment associated with the duct. The heating device is configured to heat the shape memory alloy actuator to maintain the damper in a position that obstructs the airflow in the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.