US 12,486,022 B2
Systems and methods for oil management in gearboxes for EVTOL aircraft
Scott Graves, Felton, CA (US); and Alan D. Tepe, Fremont, CA (US)
Assigned to Archer Aviation Inc., San Jose, CA (US)
Filed by Archer Aviation Inc., San Jose, CA (US)
Filed on Dec. 20, 2024, as Appl. No. 18/989,418.
Application 18/989,418 is a continuation of application No. 18/620,493, filed on Mar. 28, 2024, granted, now 12,208,908.
Application 18/620,493 is a continuation of application No. 18/302,285, filed on Apr. 18, 2023, granted, now 11,975,853, issued on May 7, 2024.
Claims priority of provisional application 63/378,680, filed on Oct. 7, 2022.
Claims priority of provisional application 63/378,536, filed on Oct. 6, 2022.
Prior Publication US 2025/0121948 A1, Apr. 17, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. B64D 27/30 (2024.01); B60L 15/06 (2006.01); B60L 15/38 (2006.01); B64C 27/54 (2006.01); B64C 29/00 (2006.01); B64D 33/08 (2006.01); B64D 35/02 (2024.01); F16B 2/06 (2006.01); F16H 57/08 (2006.01); H02K 1/27 (2022.01); H02K 1/32 (2006.01); H02K 5/124 (2006.01); H02K 5/20 (2006.01); H02K 7/08 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01); H02K 11/33 (2016.01); H02K 15/03 (2025.01); H02M 7/5395 (2006.01); H02P 21/00 (2016.01); H02P 25/16 (2006.01); H02P 27/06 (2006.01); H02P 27/08 (2006.01); H02K 7/00 (2006.01)
CPC B64D 27/30 (2024.01) [B60L 15/06 (2013.01); B60L 15/38 (2013.01); B64C 27/54 (2013.01); B64C 29/0008 (2013.01); B64C 29/0033 (2013.01); B64D 33/08 (2013.01); B64D 35/02 (2013.01); F16B 2/06 (2013.01); F16H 57/08 (2013.01); H02K 1/27 (2013.01); H02K 1/32 (2013.01); H02K 5/124 (2013.01); H02K 5/203 (2021.01); H02K 7/08 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); H02K 11/33 (2016.01); H02K 15/03 (2013.01); H02M 7/5395 (2013.01); H02P 21/50 (2016.02); H02P 25/16 (2013.01); H02P 27/06 (2013.01); H02P 27/08 (2013.01); B60L 2200/10 (2013.01); B60L 2210/40 (2013.01); H02K 7/006 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A propulsion system for an aircraft, the propulsion system comprising:
an electric motor comprising a stator and a rotor;
a main shaft;
a propeller assembly coupled to the main shaft;
a motor housing comprising a sump, wherein the main shaft and electric motor are located in the motor housing;
an end bell assembly connected to the motor housing, the end bell assembly comprising:
a plate; and
a fluid inlet extending into the sump, wherein the fluid inlet is configured to distribute fluid through the end bell assembly.