Global Patent Index - EP 0123891 A3

EP 0123891 A3 19860205 - METHOD OF SHAPING A CONVERGENT LENS IN A PLATE MADE OF A TRANSPARENT MINERAL MATERIAL

Title (en)

METHOD OF SHAPING A CONVERGENT LENS IN A PLATE MADE OF A TRANSPARENT MINERAL MATERIAL

Publication

EP 0123891 A3 19860205 (FR)

Application

EP 84103309 A 19840326

Priority

CH 180083 A 19830331

Abstract (en)

[origin: US4584799A] A method is described of forming a circular convergent lens in a plate of transparent mineral material, which involves grinding the lens with a grinding member having a lesser diameter than the lens and imparting an oscillatory motion to the plate relatively to the grinding wheel. This method also enables self-dressing of the grinding member.

IPC 1-7

B24B 13/04

IPC 8 full level

C03B 23/02 (2006.01); B24B 13/00 (2006.01); B24B 13/04 (2006.01)

CPC (source: EP)

B24B 13/00 (2013.01); B24B 13/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0123891 A2 19841107; EP 0123891 A3 19860205; EP 0123891 B1 19880518; CH 651773 A5 19851015; DE 3471270 D1 19880623; JP S59187449 A 19841024; SG 38991 G 19910726; US 4584799 A 19860429

DOCDB simple family (application)

EP 84103309 A 19840326; CH 180083 A 19830331; DE 3471270 T 19840326; JP 6131984 A 19840330; SG 38991 A 19910517; US 59589984 A 19840402