US 12,331,814 B2
Reverse multi-track ball screw
Joffrey Delong, Moissy-Cramayel (FR); and Daniel Hors, Moissy-Cramayel (FR)
Assigned to SAFRAN ELECTRONICS & DEFENSE ACTUATION, Auxerre (FR)
Appl. No. 17/639,677
Filed by SAFRAN ELECTRONICS & DEFENSE ACTUATION, Auxerre (FR)
PCT Filed Sep. 2, 2020, PCT No. PCT/EP2020/074470
§ 371(c)(1), (2) Date Mar. 2, 2022,
PCT Pub. No. WO2021/043826, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 1909619 (FR), filed on Sep. 2, 2019.
Prior Publication US 2022/0290745 A1, Sep. 15, 2022
Int. Cl. F16H 25/20 (2006.01); F16H 25/22 (2006.01)
CPC F16H 25/2228 (2013.01) 8 Claims
OG exemplary drawing
 
1. A cam comprising a cylindrical ring having a circular outer section that defines a longitudinal axis, the ring further comprising an external helical rolling track; and a duct that connects two ends of said outer helical rolling track, said duct comprising a track configured for recirculation between the ends of the rolling track, wherein the ring includes an opening extending in a direction parallel to the longitudinal axis from an end of the ring to the duct, the cam further including a removable plug fitted in said opening, wherein the opening is configured to receive the removable plug when the removable plug is inserted in a direction parallel to the longitudinal axis.