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. 22, 2014
Filed:
May. 19, 2010
Warren Smook, Huldenberg, BE;
Warren Smook, Huldenberg, BE;
Hansen Transmissions International N.V., Kontich, BE;
Abstract
A planetary gear transmission unit () includes a ring gear (), a sun gear () and a planet carrier () driving a plurality of planet shafts () onto which planet gears () are rotatably mounted by way of planet bearings (). The planet shafts are flexpin shafts () and each flexpin shaft () includes a pair of planet gears (), each planet gear () of the pair being of the single helical type having a helix angle opposite to that of the other planet gear () of the pair. A gearbox () including a planetary gear transmission unit () according to embodiments of the invention and a wind turbine including such a gearbox () are also described.