Patent · US Active

Method for restoring an article comprising a shape memory composite material

US8697835B2 · kind B2 · utility

0Cited by

1References

13Claims

0Family size

Assignee

Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH

Inventors

Andreas Lendlein · Berlin, DE
Narendra Kumar Uttamchand · Potsdam, DE
Karl Kratz · Berlin, DE
Marc Behl · Berlin, DE

Key dates

Filing date	Apr 22, 2011
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Jun 7, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24942
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for restoring a programmed article which contains a shape memory composite material of at least one shape memory polymer network with thermally inducible triple shape properties, the method comprising subjecting the article to a magnetic alternating field and simultaneously to an external heat supply in order to trigger the restoration, wherein at least one of the parameters of magnetic field strength (H) and ambient temperature (TUmg) is increased continuously or discontinuously in such a way that the article first experiences a transition in shape from the first temporary shape (TF1) into the second temporary shape (TF2) and subsequently from the second temporary shape (TF2) into the permanent shape (PF).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.