Device for setting slit widths in the beam path of spectrometers
US5451780A · kind A · utility
1Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1994 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Aug 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A slit is disposed as diaphragm in the beam path of a mass spectrometer. The slit width is to be variable in the simplest possible manner. Manual, electric motor-driven, thermoelectric or piezoelectric adjustment devices are known. According to the invention a pneumatic adjustment is provided. A Bourdon tube (12) moves a lever (14), at one end (18) of which slits (19, 20, 21) of differing slit widths are disposed. The lever movements are limited by abutments (22, 23).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.