Shape memory alloy rotary actuator with capacitive position feedback
US7503444B2 · kind B2 · utility
7Cited by
3References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Nov 22, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2070/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An engine mounted fan clutch is disclosed that utilizes an actuator including two shape memory alloy actuation wires to engage and disengage a valve arm and ultimately the fan. The actuator also includes a controller and a position sensor to accurately determine the position of a valve arm. The fan clutch is part of a control system that continuously monitors the engine parameters and makes adjustments to keep the engine temperature within an acceptable range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.