EP 4229305 A1 20230823 - WORKING CYLINDER WITH END-POSITION DAMPING, AND DAMPING PISTON RING
Title (en)
WORKING CYLINDER WITH END-POSITION DAMPING, AND DAMPING PISTON RING
Title (de)
ENDLAGENGEDÄMPFTER ARBEITSZYLINDER UND DÄMPFUNGSKOLBENRING
Title (fr)
CYLINDRE DE TRAVAIL À AMORTISSEMENT DE POSITION FINALE, ET SEGMENT DE PISTON D'AMORTISSEMENT
Publication
Application
Priority
DE 2020000248 W 20201019
Abstract (en)
[origin: WO2022083811A1] The invention relates to a working cylinder which has end-position damping, wherein a piston ring passes over an axially offset pressure-medium connection and encloses a pressure-medium damping volume. The piston ring comprises a ring joint, which has a base portion and a protruding portion, and the piston ring is of sealing design there. The pressure medium flows out of the pressure-medium damping volume via an axial transfer channel, which can be formed by a cylinder-tube axial groove or by a piston-ring axial groove. The invention also relates to a damping piston ring, which is of sealing design and has a piston-ring axial groove.
IPC 8 full level
F15B 15/22 (2006.01); F15B 15/14 (2006.01)
CPC (source: EP US)
F15B 15/1452 (2013.01 - EP US); F15B 15/224 (2013.01 - EP US); F16J 9/08 (2013.01 - US); F16J 9/14 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022083811 A1 20220428; CN 116324187 A 20230623; DE 112020007704 A5 20230803; EP 4229305 A1 20230823; JP 2023550887 A 20231206; US 2023392617 A1 20231207
DOCDB simple family (application)
DE 2020000248 W 20201019; CN 202080105617 A 20201019; DE 112020007704 T 20201019; EP 20820320 A 20201019; JP 2023523569 A 20201019; US 202018249412 A 20201019