Actuator
US8754572B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Nov 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/857
Abstract
An actuator includes a sheet having dielectric elastomer layers and conductive rubber layers provided on the front and back faces of each dielectric elastomer layer. The sheet is wrapped and rolled about a coil spring. The actuator expands the rolled sheet along an expansion direction of the coil spring by applying a voltage to the conductive rubber layers on the front and back faces of the dielectric elastomer layer, and contracts the rolled sheet along a contraction direction of the coil spring by stopping the application of the voltage. The actuator further includes a fiber layer located between the coil spring and the rolled sheet wrapped about the coil spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.