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:
Jul. 23, 2002
Filed:
May. 21, 2001
David R. Danielson, Suffield, CT (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
Maintenance requirements on a variable pitch propeller control system are minimized by eliminating the need for mechanical elements, such as a flyweight, mechanism in a secondary control for the variable pitch propeller. The system includes a secondary control ( ) operating a pitch change mechanism ( ) in response to the existence of at least one undesirable propeller condition and includes a target ( ), ( ) along with a target pickup ( ), ( ) for sensing the target ( ), ( ) and providing information to a function generator ( ) which in turn provides information to a logic device ( ), ( ), ( ), ( ), ( ), ( ), ( ) which in turn is connected to the pitch change mechanism ( ) for operating the same.