B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
B65G 47/252 (2006.01) B65G 47/24 (2006.01)
Patent
CA 2210253
An apparatus and method for inverting a plurality of contact lenses between separate processing steps which treat the opposite concave and convex surfaces of the lenses. The lenses are initially placed convex side- up on a perforated lens support surface and are subjected to the first processing step which treats this surface of the lens. The support surface is then passed over an elongated air stream which traverses and is directed to impinge upon the bottom surface of the support whereby the air stream passes through the perforations in the support and inverts the lenses from the convex side-up position to a concave side-up position whereupon this surface of the lenses may be treated in a subsequent processing step.
L'invention concerne un système et un procédé qui permettent d'inverser la surface d'une pluralité de lentilles de contact entre différentes étapes du processus de traitement applicables aux surfaces opposées concave et convexe des lentilles. On place d'abord les lentilles de contact, face convexe tournée vers le haut, sur un support de lentilles perforé en vue d'un traitement de la surface convexe selon une première étape du processus. Le support est ensuite amené sur une veine d'air allongée qui le traverse par ses perforations, jusqu'à heurter le fond du support et, ce faisant, inverser la position de la surface des lentilles: après la face convexe, c'est désormais la face concave qui est tournée vers le haut, d'où la possibilité de traiter cette surface dans une phase ultérieure du processus.
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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