Application device and method to clean grinding surfaces in a machine for grinding ophthalmic lenses

Patent metadata

Field	Value
Publication number	US-12226870-B2
Application number	US-201816624427-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jun 30, 2017
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

An application device is configured to clean grinding surfaces in a machine for grinding ophthalmic lenses, the application device including: a central portion having so as to mount the application device in the grinding machine; and a peripheral edge configured to receive an application surface to cooperate with the grinding surface of the grinding wheel so as to clean the grinding surface. It also relates to a cleaning kit including an application device and a cleaning solution, and to a method for cleaning grinding surfaces.

First claim

The invention claimed is:

1. An application device ( 10 ) configured to clean a grinding surface ( 113 ) of a grinding wheel ( 112 ) when said grinding wheel is mounted in a machine ( 100 ) for grinding ophthalmic lenses and when the machine comprises at least:
the grinding wheel having the grinding surface ( 113 ) and being rotatably mounted in the machine around a first axis ( 118 ); and
gripping members ( 104 , 106 ) configured to receive an ophthalmic lens; and

the application device comprising:
a central portion ( 12 ) having coupling means ( 14 ) shaped so as to cooperate with the gripping members so as to mount the application device in the grinding machine; and
a peripheral edge ( 16 ) and a disk made of felt, wherein the disk comprises an inside face configured to cooperate with the peripheral edge of the application device, so as to mount the disk on the central portion, and
an external face forming an application surface, so as to directly cooperate with the grinding surface of the grinding wheel so as to clean the grinding surface,

wherein the application device further comprises:
a tank ( 22 ) that comprises a peripheral border and is configured to contain a cleaning solution; and
delivering channels ( 30 ) that are arranged in the peripheral border of the tank and configured to guide the cleaning solution to the external face of the disk when a pressure is applied to the tank so as to squeeze the tank.

2. The application device ( 10 ) according to claim 1 , wherein the delivering channels are arranged in the peripheral edge ( 16 ) of the application device.

3. The application device ( 10 ) according to claim 1 , wherein the disk presents a Young modulus smaller than a Young modulus of the central portion.

4. The application device ( 10 ) according to claim 1 , the grinding surface of the grinding wheel ( 114 ) having a peripheral groove ( 115 ), the application surface of the application device having a rib ( 21 ) that is configured to cooperate with the peripheral groove of the grinding surface.

5. A cleaning kit comprising:
an application device ( 10 ) according to claim 1 ; and
a cleaning solution that is configured to be provided on the external face of the disk.

6. An application device ( 10 ) of claim 1 in combination with the machine ( 100 ) for grinding ophthalmic lenses.

Assignees

• Essilor Int

Inventors

• Lepage Jean-Etienne
• Pinault Sebastien

Classifications

• G02C7/022

  Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence) · CPC title

• B24B53/007

  Cleaning of grinding wheels · CPC title

• B24B9/146

  Accessories, e.g. lens mounting devices · CPC title

• B24B13/0037 Primary

  the lenses being worked by different tools, e.g. for rough-grinding, fine-grinding, polishing · CPC title

• B24B53/062 Primary

  using rotary dressing tools (B24B53/07 takes precedence) · CPC title