Driving device, in particular electric motor, for driving a unit
US8593025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Oct 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driving device (10) for driving a unit (11) is specified, with a drive shaft (16) on which a plurality of rolling bearings (19 to 21) serving to drive respective functional elements of the unit (11) are arranged next to one another. The rolling bearings (19 to 21) are designed as unencapsulated needle bearings (22 to 24) and are arranged directly next to one another on the drive shaft (16) in such a manner that the inner ring (25, 26) of a needle bearing (22, 23) is in touching contact by means of its end surface (43, 44), which is located on an axial side, with the facing, axial end surface (46, 47) of the outer sleeve (32, 33) of the needle bearing (23, 24) following next axially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.