Vacuum pump having lubrication and cooling systems
US5836746A · kind A · utility
50Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1995 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Oct 4, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/402
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A positive displacement vacuum pump, in which a plurality of rotors are driven into synchronous operation by independent motors, uses a rotational position sensor making use of the electromagnetic induction effect for obtaining rotational position information for the individual shafts. The rotational position sensor is cooled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.