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:
Feb. 04, 2014
Filed:
May. 04, 2011
Applicants:
Paul Swearingen, Rockford, IL (US);
Scott J. Marks, Oregon, IL (US);
Inventors:
Paul Swearingen, Rockford, IL (US);
Scott J. Marks, Oregon, IL (US);
Assignee:
Hamilton Sundstrand, Windsor Locks, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a power generation system that includes a ram air turbine that drives an electric generator and at least one electric bus that couples alternating current electric power from the electric generator to at least one electric load, a method of maintaining the speed of the ram air turbine within a desired range of speeds that comprises the step of uncoupling the at least one electric bus from the electric generator when the frequency of the alternating current falls under a desired minimum frequency.