Three-phase vehicular generator construction
US4293788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | May 25, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K19/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a fresh air duct for cooling of a brush holder-voltage regulator combination without introducing additional axial length to the overall alternator-regulator structure, a fresh air duct extends radially from the end bell of the alternator which is adjacent the slip rings, and the brush holder and voltage regulator are secured to a common support plate to form a single subassembly, the support plate covering an opening in the end bell of the alternator to permit introduction of the brush holder-voltage regulator assembly as a unit through the opening from the outside, positioning the brushes within the brush holder against the slip rings, and closing off the end bell to prevent ingress of hot air which may be in the engine compartment of the vehicle with which the alternator is to be used, so that the cooling air for the slip rings, brushes and the transistor voltage regulator is supplied as a stream of fresh air from the cooling air inlet stub which has its outlet positioned close to the brush holder-voltage regulator assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.