Global Patent Index - EP 1173305 A2

EP 1173305 A2 20020123 - METHOD AND DEVICE FOR MACHINING THE PERIPHERAL EDGE OF SPECTACLE LENSES

Title (en)

METHOD AND DEVICE FOR MACHINING THE PERIPHERAL EDGE OF SPECTACLE LENSES

Title (de)

VERFAHREN UND VORRICHTUNG ZUM FORMBEARBEITEN DES UMFANGSRANDES VON BRILLLENGLÄSERN

Title (fr)

PROCEDE ET DISPOSITIF PERMETTANT DE FA ONNER LE BORD DES VERRES DE LUNETTES

Publication

EP 1173305 A2 20020123 (DE)

Application

EP 00920544 A 20000323

Priority

  • DE 19914174 A 19990329
  • EP 0002557 W 20000323

Abstract (en)

[origin: DE19914174A1] The invention relates to a method and a device for machining the peripheral edge of spectacle lenses and for optionally applying a subsequent facet thereto. The device comprises a driven spectacle-lens holding shaft which holds the spectacle lens and a machining tool which can be moved in a controlled manner in relation to the spectacle-lens holding shaft. The torque of the spectacle-lens holding shaft is measured and said holding shaft is driven at a constant rotational speed if and for the length of time that the torque is less than or equal to a predetermined value. The torque of the spectacle-lens holding shaft is decreased optionally to a standstill if and for the length of time that the torque exceeds the predetermined value.

IPC 1-7

B24B 1/00

IPC 8 full level

B24B 1/00 (2006.01); B24B 9/14 (2006.01); B24B 49/16 (2006.01)

CPC (source: EP)

B24B 9/148 (2013.01); B24B 49/16 (2013.01)

Citation (search report)

See references of WO 0058052A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

DE 19914174 A1 20001012; DE 50001329 D1 20030403; EP 1173305 A2 20020123; EP 1173305 B1 20030226; US 6579155 B1 20030617; WO 0058052 A2 20001005; WO 0058052 A3 20010614

DOCDB simple family (application)

DE 19914174 A 19990329; DE 50001329 T 20000323; EP 0002557 W 20000323; EP 00920544 A 20000323; US 93754902 A 20020128