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:
Jun. 23, 2020
Filed:
Aug. 08, 2017
Applicant:
The Boeing Company, Chicago, IL (US);
Inventors:
Kent E. Karnofski, Lake Forest Park, WA (US);
Frederick T. Calkins, Renton, WA (US);
Assignee:
THE BOEING COMPANY, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03G 7/06 (2006.01); F01D 15/12 (2006.01); F16H 29/12 (2006.01); C22C 19/03 (2006.01); C22C 19/00 (2006.01);
U.S. Cl.
CPC ...
F03G 7/065 (2013.01); C22C 19/007 (2013.01); C22C 19/03 (2013.01); F01D 15/12 (2013.01); F16H 29/12 (2013.01); C21D 2201/01 (2013.01); F05D 2220/323 (2013.01); F05D 2240/60 (2013.01); F05D 2300/11 (2013.01); F05D 2300/142 (2013.01); F05D 2300/1431 (2013.01); F05D 2300/1616 (2013.01); F05D 2300/172 (2013.01); F05D 2300/174 (2013.01); F05D 2300/177 (2013.01);
Abstract
An engine turning 'clock work' motor including two shape memory alloy (SMA) torque tube actuators, ratcheting mechanisms, and gearing. The gearing communicates the SMA torque tube actuators with a common gear that applies torque to a shaft, so that while one torque tube is heated and applying torque, the other torque tube is relaxed (using a cooling mechanism). The ratchet prevents the relaxing torque tube from applying torque in the incorrect direction.