Global Patent Index - EP 2730981 B1

EP 2730981 B1 20220413 - BEARING AND BALANCE STAFF FOR A TIMEPIECE

Title (en)

BEARING AND BALANCE STAFF FOR A TIMEPIECE

Title (de)

DREHLAGER UND UNRUHACHSE EINER UHR

Title (fr)

PALIER ET AXE DE BALANCIER POUR UNE PIÈCE D'HORLOGERIE

Publication

EP 2730981 B1 20220413 (FR)

Application

EP 14154387 A 20110204

Priority

  • CH 3072010 A 20100226
  • EP 11153456 A 20110204

Abstract (en)

[origin: EP2362280A1] The bearing has a bush (41) enclosing multiple balls, where axial displacement of the balls is limited by a pivot against element. An element is provided with a hole for permitting insertion of a pivot of a staff balance (50) of a movement of a watch in a space between the balls. The balls and the pivot against element are made of non-metallic and non lubricating material that is chosen from ceramic, zirconium oxide ceramic, silicon and diamond.

IPC 8 full level

G04B 31/012 (2006.01); G04B 31/02 (2006.01)

CPC (source: EP)

G04B 31/0123 (2013.01); G04B 31/02 (2013.01)

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

DOCDB simple family (publication)

EP 2362280 A1 20110831; EP 2362280 B1 20160720; CH 702722 A1 20110831; EP 2730981 A1 20140514; EP 2730981 B1 20220413

DOCDB simple family (application)

EP 11153456 A 20110204; CH 3072010 A 20100226; EP 14154387 A 20110204