US 12,392,293 B2
Lubrication system for aircraft engine reduction gearbox
Michel Desjardins, St-Hubert (CA); and Vincent Savaria, Laval (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Jan. 26, 2022, as Appl. No. 17/649,054.
Application 17/649,054 is a continuation of application No. 17/203,902, filed on Mar. 17, 2021, granted, now 11,268,453.
Prior Publication US 2022/0298974 A1, Sep. 22, 2022
Int. Cl. F16H 57/04 (2010.01); F02C 7/06 (2006.01); F02C 7/36 (2006.01); F16H 57/08 (2006.01)
CPC F02C 7/36 (2013.01) [F16H 57/0404 (2013.01); F16H 57/0479 (2013.01); F02C 7/06 (2013.01); F05D 2220/323 (2013.01); F05D 2230/72 (2013.01); F05D 2240/50 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/98 (2013.01); F16H 57/082 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of performing maintenance on an aircraft engine including an epicyclic gear train having a sun gear a carrier mounted about a center axis, and a plurality of planet gears mounted to the carrier, the carrier engaged with a propeller shaft at a carrier-output engagement location, the method comprising:
removing the propeller shaft of the aircraft engine to form an access volume at a center of the aircraft engine, the access volume extending axially and radially relative to the center axis at the carrier-output engagement location; and
performing maintenance on a lubricant strainer positioned at the carrier-output engagement location.