US 12,404,014 B2
Hydraulic motor start assist
Jason Bradley Allen, Waco, TX (US)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Mar. 21, 2023, as Appl. No. 18/187,416.
Prior Publication US 2024/0317390 A1, Sep. 26, 2024
Int. Cl. B64C 25/50 (2006.01); B64C 25/22 (2006.01)
CPC B64C 25/50 (2013.01) [B64C 25/22 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A nose-wheel steering system, comprising:
a hydraulic motor including a drive shaft configured to rotate about a first axis; and
a hydraulic motor start assist mechanism coupled to the hydraulic motor and configured to provide a temporary boost of hydraulic fluid pressure supplied to the hydraulic motor, wherein the hydraulic motor start assist mechanism comprises:
a servo valve coupled to the hydraulic motor and an intensifier valve, the servo valve configured to provide the hydraulic fluid pressure to the hydraulic motor and the intensifier valve;
the intensifier valve coupled to a displacement intensifier and configured to provide the hydraulic fluid pressure to the servo valve in a first state and provide the hydraulic fluid pressure to the displacement intensifier in a second state; and
the displacement intensifier configured to translate in a first direction in the first state and translate in a second direction in the second state.