Current collector with compliant brush containing liquid metal reservoir
US4186321A · kind A · utility
9Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Feb 17, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K31/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current collector for an electrical machine employs a rotor collector ring encircled by a stator collector ring to which a compliant brush of U-shaped cross section and fabricated of an electrically conductive, liquid metal-permeable material is attached. The region enclosed between the stator collector ring and the brush is filled with liquid metal which seeps outward through the brush interstices, forming on the brush a thin liquid metal film which makes sliding contact with the rotor collector ring, enhancing conductivity between the rotor and stator collector rings through the brush filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.