Screw compressor with bearing unloading means
US4185949A · kind A · utility
5Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Jan 16, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/0021
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a screw compressor, an axial force is transmitted from the rotor shaft to the housing by way of an antifriction bearing including first and second bearing rings and roll bodies therebetween, the first ring being mounted on the shaft while the second ring is supported axially by the housing and is movable radially relative to the housing. A piston mounted concentrically on the shaft is operable by a fluid pressure to decrease the axial force transmitted to the housing, and the piston sealingly cooperates with a surface which is stationary relative to the second bearing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.