US 12,215,653 B2
Rod seal assemblies for machines with crossheads and sealed oscillating rods
Per Eskilsson, Åmål (SE); Andreas Verner, Karlstad (SE); Francisco Xavier Borras, Enschede (NL); Andreas Baumueller, Tuebingen (DE); Åke Edvinsson, Åmål (SE); and Olle Sääw, Sollebrunn (SE)
Assigned to EnergyIntel Services Ltd., Nicosia (CY)
Appl. No. 17/425,873
Filed by EnergyIntel Services Ltd., Nicosia (CY)
PCT Filed Jan. 29, 2020, PCT No. PCT/SE2020/050073
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/159423, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 1950105-5 (SE), filed on Jan. 29, 2019; and application No. 1950106-3 (SE), filed on Jan. 29, 2019.
Prior Publication US 2022/0120236 A1, Apr. 21, 2022
Int. Cl. F16J 15/56 (2006.01); F02G 1/053 (2006.01)
CPC F02G 1/0535 (2013.01) [F16J 15/56 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A rod seal assembly for a machine comprising a crosshead and a sealed piston rod, wherein the rod seal assembly comprises:
a seal housing, a rod seal, a bushing and a rod seal base,
wherein the rod seal, bushing and the rod seal base are annular and can be laterally moved in relation to the seal housing,
wherein the housing extends radially inwardly to support the rod seal base in an axial direction,
wherein the rod seal base is adapted to be arranged around the piston rod and is provided with a base portion,
wherein the base portion comprises:
a lower axial surface directed in a first axial direction; and
an upper axial surface directed in a second axial direction,
wherein the lower axial surface abuts the housing and the upper axial surface is provided with a rod seal seat,
wherein the lower axial surface is in direct contact with the housing,
wherein the rod seal is adapted to be arranged around the piston rod, and has a first end portion and a second end portion, wherein the first end portion is arranged to connect to the rod seal base in the first axial direction,
wherein the bushing is arranged to abut the rod seal in the first axial direction, and wherein the rod seal base and the bushing are arranged to have an axial overlap.