Positioning device
US8704129B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2005 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Feb 23, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/1462
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A positioning device of the type described characterised by the incorporation of the puck into a closed circuit gas system from which the puck establishes the flow of fluid to provide the fluid cushion. Typically the positioning device is characterised by the provision of a heat transfer mechanism incorporated in the closed circuit to provide for heat exchange between the heat transfer mechanism and gas flowing around the system. The puck is coupled to a lens and a mask to provide for close following of a surface of a work-piece so as to keep a magnified image of the mask stable; the combination of puck, lens and mask forming a unit counterbalanced by a counterweight acting to provide for adjustment of focus of the laser beam relative to the surface of the work-piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.