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:
Apr. 23, 2019
Filed:
Dec. 08, 2014
Applicant:
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Inventors:
Thomas M. Zywiak, Suffield, CT (US);
John M. Beck, Windsor, CT (US);
Peter Zywiak, Suffield, CT (US);
Assignee:
HAMILTON SUNDSTRAND CORPORATION, Windsor Locks, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); G05D 7/06 (2006.01); F04D 19/00 (2006.01); B64D 13/06 (2006.01); F25B 49/00 (2006.01); B64F 5/60 (2017.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); B64D 13/06 (2013.01); B64F 5/60 (2017.01); F04D 19/002 (2013.01); F25B 49/005 (2013.01); G05D 7/0629 (2013.01);
Abstract
A method and apparatus for operating an air cycle machine is disclosed. The apparatus includes a detector for measuring a rotational speed of a component of the air cycle machine. A processor estimates a rate of change of rotational speed of the component from the measured rotational speed and shuts down the air cycle machine when the estimated rate of change of the rotational speed of the component is greater than a selected rate threshold.