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:
Oct. 07, 2025
Filed:
Dec. 20, 2021
Leonardo S.p.a., Rome, IT;
LEONARDO S.P.A., Rome, IT;
Abstract
A description is provided of a planetary gear comprising a sun rotatable around a first axis, a crown angularly fixed with respect to the first axis; two satellites that are meshing, rotatable around respective second axes; a satellite carrier rotatable around the first axis and comprising at least two first pins with respect to which the satellites are rotatable around respective second axes; and a plurality of bearings comprising: a first ring defining a first raceway that is at least partially spherical; a second ring defining a second raceway; and a plurality of rolling bodies shaped as an hourglass rolling on the first spherical raceway and a second raceway; each rolling body being in contact with the raceways at a line with axial ends lying on respective straight lines tilted between them and converging in a point lying on a median plane of the rolling body and on the second axis; the straight lines define a first angle, whose bisector lies on the first median.