Global Patent Index - EP 3810963 A1

EP 3810963 A1 20210428 - HYDRODYNAMICALLY EFFECTIVE SEALING RING AND ROTARY FEEDTHROUGH WITH SUCH A SEALING RING

Title (en)

HYDRODYNAMICALLY EFFECTIVE SEALING RING AND ROTARY FEEDTHROUGH WITH SUCH A SEALING RING

Title (de)

HYDRODYNAMISCH WIRKSAMER DICHTRING UND DREHDURCHFÜHRUNG MIT EINEM SOLCHEN DICHTRING

Title (fr)

BAGUE D'ÉTANCHÉITÉ À ACTIVITÉ HYDRODYNAMIQUE ET JOINT ROTATIF POURVU D'UNE TELLE BAGUE D'ÉTANCHÉITÉ

Publication

EP 3810963 A1 20210428 (DE)

Application

EP 19730331 A 20190612

Priority

  • DE 102018114701 A 20180619
  • EP 2019065284 W 20190612

Abstract (en)

[origin: WO2019243123A1] The invention relates to a sealing ring as is used for sealing rotary feedthroughs of rotating shafts from a surrounding housing, and to a corresponding rotary feedthrough. Provision is made here for a radial bevel which is hydrodynamically effective in the radial direction to be provided on the at least one flank of the sealing ring and to be directed at an angle α towards the clamping surface into a flank surface of the flank, for the hydrodynamically effective radial bevel to have an extent of ≥0.3mm, preferably ≥0.5mm, in the radial direction, and for the hydrodynamically effective radial bevel to have a maximum depth of 20 µm to 50 µm axially in relation to the flank surface. Furthermore, provision is made for the clamping surface opposite the at least one lateral sealing flank to be directed at a decreasing angle β into an axial bevel which is hydrodynamically effective in the axial direction. A sealing ring of low friction and wear is provided by the hydrodynamically effective radial or axial bevel.

IPC 8 full level

F16J 15/44 (2006.01)

CPC (source: EP US)

F16J 15/441 (2013.01 - EP 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

DOCDB simple family (publication)

DE 102018114701 A1 20191219; EP 3810963 A1 20210428; US 2021270373 A1 20210902; WO 2019243123 A1 20191226

DOCDB simple family (application)

DE 102018114701 A 20180619; EP 19730331 A 20190612; EP 2019065284 W 20190612; US 201917252351 A 20190612