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. 15, 2014
Filed:
Oct. 12, 2009
Jan-olov Forsstrom, Kristinehamn, SE;
Jan-Olov Forsstrom, Kristinehamn, SE;
Rolls-Royce Aktiebolag, , SE;
Abstract
This invention relates to a method and a Propeller Pitch Control Arrangement, comprising a propeller hub () having a number of interface fittings () for adjustable pitch positioning of a propeller blade, a positioning device (), within said hub (), having a number of propeller control interfaces () and an actuator arrangement () arranged to move and position said positioning device () to enable varying pitch for said propeller blades, characterized in—that said actuator arrangement includes a rotatable shaft () with threads () interacting with mating threads () at said positioning device (), and,—that said rotatable shaft () is driven by a motor device () positioned adjacent said hub ().