Hydraulically actuated assembly device
US4805281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Mar 3, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5383
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydraulically actuated device for moving machine parts or the like, especially a device for pressing or fitting bearings into place in the forks of universal joints, consisting of a linear-action work cylinder, a pressure generator with a constant pressure, a supply tank with pressure medium, a main valve which controls the flow of pressure medium to provide the required amount in the work chamber of the work cylinder, a main line connecting these parts of the device, and a measurement system, which controls the main valve as a function of a measurement value, especially the center offset of the joint fork with respect to a reference axis or the like, characterized in that, between the work chamber of the work cylinder and the supply tank, a return line is provided, which has a throttle device which sharply reduces the return flow of pressure medium by comparison to the flow of medium into the work chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.