Patent · US Active

Method and device for cleaning deposited material from a molding surface of a mold for forming ophthalmic lenses

US10549321B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Gabriela Cocora · Elsenfeld, DE
Halina Heidrich · Kahl am Main, DE
Fabian Kern · Amorbach, DE
Axel Heinrich · Aschaffenburg, DE
Volker Lanig · Giebelstadt, DE

Key dates

Filing date	Jun 27, 2018
Grant date	Feb 4, 2020
Priority date	—
Expiry date	Aug 16, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29D11/00519
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of cleaning deposited material from a molding surface (10) of a mold (1) for forming ophthalmic lenses, including bringing a cleaning head (20) into contact with the molding surface (10), the rotational axis (22) of the cleaning head (20) being arranged normal to the molding surface (10), rotating (220) the cleaning head (20) around the rotational axis (22) while maintaining the contact between the cleaning head (20) and the molding surface (10), moving the cleaning head (20) to perform a precession motion (110) around a central normal (11) on the molding surface (10), while rotating (220) the cleaning head (20) around the rotational axis (22) and while maintaining the contact between the cleaning head (20) and the molding surface (10). During the precession motion (110) the rotational axis (22) includes an inclination angle (α1,α2) with the central normal (11) on the molding surface (10).

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