US 12,460,706 B2
Epicyclic system with bevel attachment for dual-power applications
Roberto Brito, Beloeil (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Québec (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Dec. 8, 2023, as Appl. No. 18/533,770.
Prior Publication US 2025/0189022 A1, Jun. 12, 2025
Int. Cl. F16H 37/06 (2006.01); B64D 35/02 (2006.01); F01D 15/12 (2006.01); F02C 7/32 (2006.01); F16H 57/08 (2006.01); F16H 57/02 (2012.01)
CPC F16H 37/065 (2013.01) [B64D 35/02 (2013.01); F01D 15/12 (2013.01); F05D 2260/40311 (2013.01); F16H 2057/0203 (2013.01); F16H 2057/02043 (2013.01); F16H 2057/02082 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A reduction gearbox of an aircraft propulsion system, comprising:
an input shaft configured to input rotational energy into the reduction gearbox;
an output shaft configured to output rotational energy from the reduction gearbox to a propulsor of the aircraft propulsion system;
an epicyclic gear arrangement mechanically coupling the output shaft to the input shaft;
a transfer gear disposed at a component of the epicyclic gear arrangement and configured to mechanically couple an accessory component to the reduction gearbox;
wherein the transfer gear is a bevel gear disposed at one of a planet carrier or a ring gear of the epicyclic gear arrangement, the transfer gear configured to be coupled directly to a corresponding component bevel gear of an accessory gear train of the accessory component.