Composite material in rod, tube, strip, sheet or plate shape with reversible thermomechanical properties and process for its production
US4808246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1986 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Sep 26, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1291
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A composite material in rod, tube, strip, sheet or plate shape with reversible thermomechanical properties is produced by joining of at least two parts consisting of a total of at least one shape memory alloy having a two-way effect, whereby each part has a memory effect by itself. In the case of at least two shape memory alloys (1, 2) with different transition temperatures but the same mode of movement, the joining of the individual parts can take place prior to the deformation in the low temperature range necessary to inducing the two-way effect. In the case of differing types and degrees of movement of the individual parts (25, 26), their joining can first be accomplished only after the individual deformations of each part for itself in the low temperature range are accomplished regardless of how many shape memory alloys with different transition temperatures are used in the structure of the composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.