Airflow control device
US6910340B2 · kind B2 · utility
13Cited by
29References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2003 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | May 31, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F13/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An airflow control device has a fixed damper element and a movable damper element. Shape memory wires are connected to the fixed damper element and the movable damper element. The shape memory wires are alternately electrified to cause the contraction thereof to move the movable damper element in opposite directions. A heater can be provided along with the damper elements to overcome frost buildup in cold environments, such as refrigeration systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.