Actuating devices
US4017754A · kind A · utility
6Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1975 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Dec 17, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/00
Abstract
An actuating device comprises an elongated member formed from a material having the property of magnetostriction and a winding which can be energized to cause flow of magnetic flux in the member so as to cause a physical change in the dimension. The elongated member is divided into a plurality of magnetic circuits disposed along the length of the member and portions of adjacent magnetic circuits are adjacent each other. The directions of flux flow in adjacent magnetic circuits is such that in said portions of two adjacent circuits, the flux flows are in the same direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.