US 12,269,517 B2
Piston rod end for a linear actuator, piston assembly and sealing method for a piston rod end
Khaled El-Musleh, Falun (SE)
Assigned to DELLNER COUPLERS AB, Falun (SE)
Appl. No. 17/312,682
Filed by DELLNER COUPLERS AB, Falun (SE)
PCT Filed Nov. 22, 2019, PCT No. PCT/SE2019/051183
§ 371(c)(1), (2) Date Jun. 10, 2021,
PCT Pub. No. WO2020/122787, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 1851586-6 (SE), filed on Dec. 14, 2018.
Prior Publication US 2022/0063684 A1, Mar. 3, 2022
Int. Cl. B61G 11/12 (2006.01); B61G 11/04 (2006.01); B61G 9/20 (2006.01)
CPC B61G 11/12 (2013.01) [B61G 11/04 (2013.01); B61G 9/20 (2013.01); F16F 2230/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Piston assembly for a train coupler comprising a linear actuator (100) and a piston rod end (1), the piston rod end (1) comprising
a housing (2) enclosing a cavity (23) with a bottom surface (24), the cavity (23) extending in a longitudinal direction in the housing (2),
an elongated insert (3) arranged at least partly inside the cavity (23),
a spring (5) arranged inside the cavity (23), the spring (5) being arranged between the bottom surface (24) and the insert (3), and
a fastening device (4) comprising a transversal element (41) and a longitudinal slot (42) forming a play, one being arranged in the housing (2) and the other in the insert (3), and configured to cooperate in such a way that the transversal element (41) extends into the slot (42) in a transversal direction in relation to the housing (2) and is movable in the play so that the insert (3) is movable in relation to the housing (2) but not removable from the housing (2),
wherein the piston rod end (1) further comprises a first connector (6) for connecting the piston rod end (1) to the linear actuator (100) and a second connector (7) for connecting the piston rod end (1) to a train coupler, one of said first (6) and second (7) connectors being arranged on the housing (2) and the other being arranged on the insert (3), and
the piston rod end (1) is mounted on the linear actuator (100) by the first connector (6) on the piston rod end (1) being joined to an actuator connector (150) on a first end of the linear actuator (100).