Rotary screw machine with thrust balanced bearings
US5411388A · kind A · utility
12Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Apr 12, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/43
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a rotary screw machine, a shaft journal (7) of one of the rotors (6) is mounted in main thrust bearings (9, 10) and a balancing thrust bearing (11 ), the latter being located outermost on the shaft journal (7). The main thrust bearings (9, 10) are clamped towards the low pressure end of the machine. The balancing thrust bearing (11) is affected by a thrust balancing device for counter-acting the gas forces on the rotor (6), thereby reducing the force that has to be transferred by the main thrust bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.