Device for holding delicate workpieces, in particular optical lenses and other optical structural elements
US4669226A · kind A · utility
30Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/31
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device for holding delicate workpieces, particularly optical lenses, includes a membrane having a clamping surface. To receive a workpiece, the membrane is pressurized and bulges in such a manner that the clamping surface is enlarged and becomes funnel-shaped. In order to clamp the workpiece, the pressure in the membrane is decreased so that the membrane assumes a shape in which the clamping surface is constricted and holds the workpiece with a force which is evenly distributed over its entire periphery, through which deformation and destruction of workpieces is safely avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.