Wireless slip ring assembly
US4870311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Oct 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless slip ring assembly includes inner and outer subassemblies mounted together for undergoing rotation relative to one another. The inner subassembly includes a sleeve composed of axially spaced annular slip rings and a printed circuitboard mounted within the sleeve having spaced longitudinal sides connected at longitudinal edges and spaced conductive paths defined on the longitudinal sides and extending to the edges. The conductive paths are spaced from interior sides of the slip rings except at the longitudinal edges of the circuitboard, where each conductive path is electrically and rigidly connected to one slip ring. The outer subassembly includes a brush cylinder rotatably mounted to the inner subassembly sleeve and having apertures therethrough aligned with the slip rings, a flexible circuit attached on the brush cylinder exterior and having spaced conductive leads with locations aligned with the brush cylinder apertures, and contact brushes electrically and rigidly connected to the conductive lead locations and having end portions extending through the apertures and making electrical sliding contact with the slip rings as the inner and outer subassemblies undergo rela…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.