EP 0758571 B2 20050907 - process for manufacturing a concave outer surface on a spectacle lens blank
Title (en)
process for manufacturing a concave outer surface on a spectacle lens blank
Title (de)
Verfahren zur Erzeugung einer konkaven Oberfläche aus einem Brillenglasrohling
Title (fr)
Procédé pour la réalisation d'une surface concave dans une ébauche de verre à lunette
Publication
Application
Priority
DE 19529786 A 19950812
Abstract (en)
[origin: EP0758571A1] The appliance consists of a disc shaped grinding tool (2) with an annular grinding lip asymmetrically positioned and with its maximum radius leading into a circular cutting edge. The rear surface of the tool facing away from the grinding lip and opening into the cutting edge runs in relation to the tool's rotary axis (c) at an angle between the tool (b) and the rotary axis. The periphery has evenly distributed holder arms to whose outer ends cutter plates are fixed pointing radially to the grinder's rotary axis, and whose blades define an aspherical enveloping surface.
IPC 1-7
IPC 8 full level
B24B 11/00 (2006.01); B24B 13/06 (2006.01)
CPC (source: EP US)
B24B 11/00 (2013.01 - EP US); B24B 13/06 (2013.01 - EP US); Y10T 409/303752 (2015.01 - EP US); Y10T 409/303808 (2015.01 - EP US); Y10T 409/305656 (2015.01 - EP US); Y10T 409/307448 (2015.01 - EP US)
Citation (opposition)
Opponent :
- DE 4230979 A1 19930325 - ESSILOR INT [FR]
- US 4989316 A 19910205 - LOGAN DAVID J [US], et al
- US 2231900 A 19410218 - GEOFFRION ARTHUR J
- US 3866358 A 19750218 - RUPP WIKTOR J
- US 4862646 A 19890905 - BRIONES ROBERT A [US]
- DE 4221377 A1 19930107 - WERNICKE & CO GMBH [DE]
- WO 9301024 A1 19930121 - WERNICKE & CO GMBH [DE]
- US 4177699 A 19791211 - DOVNAR STANISLAV A [SU], et al
- DE 9303054 U1 19940407 - POKOLM FRANZ JOSEF [DE]
- DE 3035536 A1 19810409 - AMERICAN OPTICAL CORP [US]
- Dubbels Taschenbuch für Maschinenbau, Springer Verlag 1966
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0758571 A1 19970219; EP 0758571 B1 20020116; EP 0758571 B2 20050907; EP 0758571 B8 20051123; DE 19529786 C1 19970306; DE 59608585 D1 20020221; ES 2171580 T3 20020916; ES 2171580 T5 20060316; MX 9603307 A 19970731; US 5938381 A 19990817; US 6227952 B1 20010508
DOCDB simple family (application)
EP 96112436 A 19960801; DE 19529786 A 19950812; DE 59608585 T 19960801; ES 96112436 T 19960801; MX 9603307 A 19960809; US 32950599 A 19990610; US 69578996 A 19960812