Coiled actuator system and method
US10793979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Sep 11, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2501/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system and method of generating a coiled actuator fiber. The method includes twisting a fiber to generate a twisted fiber, wrapping the twisted fiber around a core to generate a coil in the twisted fiber; and removing at least a portion of the core to generate a coiled actuator fiber. In some aspects that fiber can be a yarn with one or more fibers or a fiber comprising a single elongated element. In some aspects, a portion of the core includes a removable sacrificial portion. The removable sacrificial portion can be dissolvable in a solvent or physically removable. In some aspects, the core further includes a non-dissolvable portion that is not dissolvable and generating a coiled actuator can include removing the sacrificial portion by treating a twisted fiber on the core to remove the sacrificial portion and leaving the non-dissolvable portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.