Electrical bearing ground device
US8488293B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1732
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An assembly, system and method are provided for discharging a rotating shaft encompassed by a stationary housing. The system includes an annular charge-dissipating component and a biasing element oriented to apply an axial force to the charge-dissipating component, holding it in contact with the shaft and the housing while the shaft is rotating. The biasing element may be a coil spring or a wave spring. A shaft grounding upgrade kit includes a conductive ring member and a cylindrical spring having a diameter that is the same as that of the conductive ring member. The spring constant of the cylindrical spring is such that the spring holds the conductive ring member within the housing in contact with the shaft and the housing. The conductive ring member may be constructed of gray iron and the cylindrical spring is one of a wave spring and a coil spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.