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:
Jan. 16, 2018
Filed:
Jan. 17, 2017
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Jeffrey Matthew Williams, Fort Worth, TX (US);
James Elbert King, Fort Worth, TX (US);
James Everett Kooiman, Fort Worth, TX (US);
Andrew G. Baines, Fort Worth, TX (US);
Christopher R. Jackson, Fort Worth, TX (US);
George Ryan Decker, Fort Worth, TX (US);
Daniel J. Sweigard, Fort Worth, TX (US);
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Abstract
A propulsion system for a tiltrotor aircraft includes an engine supported by the airframe and a fixed gearbox operably coupled to the engine. Inboard and outboard pedestals are supported by the airframe and positioned above the wing. A pylon assembly is rotatably coupled between the inboard and outboard pedestals. The pylon assembly includes a spindle gearbox having an input gear, a mast operably coupled to the input gear and a proprotor assembly operable to rotate with the mast. The spindle gearbox is rotatable about a conversion axis to selectively operate the tiltrotor aircraft between helicopter and airplane modes. A common shaft, rotatable about the conversion axis, is configured to transfer torque from an output gear of the fixed gearbox to the input gear of the spindle gearbox. Each of the inboard and outboard pedestals includes a pillow block housing such as a full or a split pillow block housing.