Vacuum pumps
US6371735B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D19/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vacuum pump comprising a shaft rotatable by means of a motor, at least two spaced pump stages mounted on the shaft, a first pump inlet through which gas can pass for passage through all the pump stages for evacuating a first system and a second pump inlet through which gas can enter the pump at an inter-stage location for passage through only subsequent stages of the pump for evacuating a second system, said first and second systems each having a gas outlet flange for attachment to a first or a second pump inlet, in which the vacuum pump is mounted relative to the respective first and second systems such that the longitudinal axis of the shaft is inclined to each of the gas outlet flanges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.