Fluid rotating apparatus
US5197861A · kind A · utility
58Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Aug 1, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/51
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from promptly atmospheric pressure promptly by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control mechanical contact thereof with a gear or the like. In addition, hydrostatic bearing are employed for supporting the rotary shafts to avoid of mechanical abrasion and the use of lubricant oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.