Spin tuned magnetron having load sharing bearing arrangements
US4281273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Sep 27, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J23/213
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spin tuned magnetron (FIG. 2) includes a spinner 3 which interacts with a magnetron cavity to modulate its frequency of oscillation. The spinner runs in bearings 8, 9 around a shaft 7. The lives of the bearings are a controlling factor in the life of the magnetron. The outer races OR are fixed in position relative to each other and to the spinner by spacers, 13, 14 and a spring 15 arranged between an abutment 11 and a circlip 12 on the spinner. The inner races are arranged to be moveable relative to each other and to the shaft by virtue of spacers 10 and 17, a spring 16 between the inner races, and a further spring 18. A pole-piece nose 4 is arranged to be screwed down on the shaft to compress the springs 16 and 18 to provide a desired amount of axial float on the spinner. By setting the axial float the bearing load can be shared as desired and thus increase the lives of the bearings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.