Tool whose shape adapts automatically to the surface of an ophthalmic lens
US4831789A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1988 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/0052
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This tool whose shape adapts automatically to the surface of an ophthalmic lens is suitable for use as a polisher or as an applicator buffer. It comprises a rigid support (2) having a cavity (5) in one of its faces, together with a buffer (1) constituted by two elastically deformable membranes (7 and 8) which are fixed at their peripheral edges to the side walls of the cavity (5) at a distance from the bottom thereof, thereby defining a space (9) between the membranes which is filled with an incompressible material (11) consituted by small-size grains, with the support (2) including a passage (12) having one end opening out into said space (9) and having its other end connectable to a vacuum source (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.