Optical viewing system associated apparatus and machines equipped therewith
US4304982A · kind A · utility
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1References
26Claims
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Assignee
Inventor
Key dates
| Filing date | May 28, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | May 28, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K15/0013
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Optical workpiece viewing systsms and associated apparatus for electron beam welders and other workpiece processing machines which generate metal vapors. The subject systems have replaceable shields which keep the optical components of the system from being coated by condensation of vapors generated during the welding operation, and the associated apparatus includes an arrangement for changing shields as they become clouded which reduces to a small fraction the time conventionally required for that purpose. Workpiece processing machines with optical viewing system and related apparatus of the character just described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.