The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2019
Filed:
Mar. 01, 2017
Patrick Mather, Oxford, PA (US);
Xiaofan Luo, Cleveland, OH (US);
Andrew M. Diorio, Windham, NH (US);
Kyung-min Lee, Wright-Patterson AFB, OH (US);
Patrick Mather, Oxford, PA (US);
Xiaofan Luo, Cleveland, OH (US);
Andrew M. DiOrio, Windham, NH (US);
Kyung-Min Lee, Wright-Patterson AFB, OH (US);
Syracuse University, Syracuse, NY (US);
Abstract
A functionally graded shape memory polymer (SMP) that has a range of transition temperatures that are spatially distributed in a gradient fashion within one single article. The SMP is formed by post-curing a pre-cured glassy SMP in a linear temperature gradient that imposes different vitrification temperature limits at different positions along the gradient. Utilizing indentation-based surface shape memory coupled with optical measurements of photoelastic response, the capability of this material to respond over a wide range of thermal triggers is correlated with the graded glass transition behavior. This new class of SMP offers great potential for such applications as passive temperature sensing and precise control of shape evolution during a thermally triggered shape recovery.