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. 04, 2014
Filed:
Sep. 10, 2010
Ian Gunter, Burien, WA (US);
Robert T. Ruggeri, Kirkland, WA (US);
James H. Mabe, Seattle, WA (US);
Darin Arbogast, Seattle, WA (US);
Ordie D. Butterfield, Bonney Lake, WA (US);
Daniel Morgenroth, Kent, WA (US);
Ian Gunter, Burien, WA (US);
Robert T. Ruggeri, Kirkland, WA (US);
James H. Mabe, Seattle, WA (US);
Darin Arbogast, Seattle, WA (US);
Ordie D. Butterfield, Bonney Lake, WA (US);
Daniel Morgenroth, Kent, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A rotational actuator assembly employs a first torsion actuator having a shape memory alloy (SMA) tube with a first trained twist direction and a second torsion actuator having a SMA tube with an opposite trained twist direction collinear with the first torsion actuator with abutting proximal ends. A central fitting joins the proximal ends. A control system for temperature control of the first torsion actuator and second torsion actuator about an average temperature provides combined antagonistic rotation of the central fitting.