US 12,072,002 B2
Ring gear for an aircraft mechanical gearbox
Loïc Francois, Moissy-Cramayel (FR); Boris Pierre Marcel Morelli, Moissy-Cramayel (FR); and Florent Lejeune, Moissy-Cramayel (FR)
Assigned to Safran Transmission Systems, Colombes (FR)
Filed by SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Filed on Dec. 8, 2023, as Appl. No. 18/534,131.
Claims priority of application No. 2213078 (FR), filed on Dec. 9, 2022.
Prior Publication US 2024/0191779 A1, Jun. 13, 2024
Int. Cl. F16H 55/17 (2006.01); F16H 1/34 (2006.01); F16H 48/11 (2012.01); F16H 57/08 (2006.01); F16H 1/32 (2006.01)
CPC F16H 1/34 (2013.01) [F16H 48/11 (2013.01); F16H 55/17 (2013.01); F16H 57/082 (2013.01); F16H 2001/327 (2013.01); F16H 2055/176 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A ring gear for an aircraft mechanical gearbox, the ring gear having an annular shape about an axis and comprising:
an internal toothing at its internal periphery;
an external annular flange or splines at its external periphery; and
an annular web extending between the internal toothing and the external flange or splines,
wherein the web includes an annular row of arms which are distributed around the axis, the arms connecting the internal toothing to the external flange or splines and being formed in a single piece with the internal toothing and the external flange or splines.