Coupling with a hydraulically pressurized hub
US5201842A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1992 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/22
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention concerns a coupling with a hub, for transmitting a torque to a shaft, with a cylindrical annular chamber arranged in the hub at a slight spacing from the shaft. The annular chamber can be pressurized with an hydraulically actuated servo valve arranged in the hydraulic fluid channel connecting to said annular chamber. A separate hydraulic fluid channel serves to actuate the servo valve. As control pressure is admitted to this second hydraulic fluid channel, the servo valve opens and establishes the connection between the first hydraulic fluid channel and the annular chamber for admission of a high-pressure medium. The advance of the connecting nipples onto the hub may be effected by remote actuation, thus enabling an automatic roll change, for instance in a rolling mill, without difficult and time-consuming manual assembly in congested space conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.