X-Ray tube comprising two cathode coils
US4360735A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1981 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Feb 6, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an exemplary embodiment, a housing of shielding material, surrounding the cathode coils, has an opening for the transmission of the stream of electrons to the anode. A device for effecting a relative movement between the housing and the cathode coils is present, by means of which one of the cathode coils is selectively capable of being covered. The cathode coils can be mounted on a holder which is pivotal about the x-ray tube longitudinal axis by means of electromagnets. The electromagnets can be connected to the output of the filament supply transformer, associated with the respective cathode coil, and a multiplex circuit can be provided for the transmission of the control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.