Patent · US Active

Method for providing a male mold half for molding a toric ophthalmic lens at a predetermined target rotational orientation

US12083756B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

ALCON INC. · CH

Inventors

Matthias Schwab · Amorbach, DE
Udo Schuessler · Honsbach, DE
Steffen Lieb · Flemlingen, DE
Eduard Jetzlaff · Schollbrunn, DE
Jan Bernard · Niedernberg, DE
Halina Heidrich · Kahl am Main, DE
Thomas Tonn · Aschaffenburg, DE

Key dates

Filing date	Aug 10, 2021
Grant date	Sep 10, 2024
Priority date	—
Expiry date	Nov 28, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2011/0041
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method of providing a male mold half for molding a toric contact lens at a predetermined target rotational orientation is disclosed. The method comprises the steps of: —providing the male mold half at a predetermined rotational orientation, —picking the male mold half up with a gripper having a central axis, —rotating the gripper with the male mold half about the central axis of the gripper by a predetermined rotational angle (α) towards the predetermined target rotational orientation, and —releasing the rotated male mold half from the gripper. Prior to picking the male mold half up, the method comprises centering the grippe and the male mold half relative to each other such that the central axis of the gripper and a central axis of the male mold half coincide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.