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| Number | Title | Issue Date |
| 5540052 | Pulse hydraulic systems and methods therefor A pulse hydraulic system is disclosed comprising, in combination a hydraulic sump for supplying the system with hydraulic fluid, one or more hydraulic pumps taking suction on the sump for increasing the pressure of the hydraulic fluid exiting the sump, a ... | 07/30/1996 |
| 4526000 | Pressure intensifier A first pressure-intensifying apparatus includes a working cylinder having a working piston mounted within it and reciprocally movable by the application of working fluid alternately to opposite sides of the working piston. The working piston in turn driv... | 07/02/1985 |
| 4526003 | Master brake cylinder for two-circuit braking systems A master cylinder for a two-circuit brake system which includes anti-skid control has two separate chambers and pistons. The main control piston is associated with an auxiliary piston which it engages after a predetermined amount of travel. The auxiliary ... | 07/02/1985 |
| 4470280 | Swaging apparatus with timed pre-fill In an apparatus for forming leak-proof joints between tubes and a tube sheet by the internal application of hydraulic swaging pressure, the flow of relatively low pressure fluid from a pressure source to an intensifier is permitted or interrupted by a con... | 09/11/1984 |
| 4407150 | Apparatus for supplying and controlling hydraulic swaging pressure In an apparatus for forming leak-proof joints between tubes and a tube sheet by the internal application of hydraulic swaging pressure, the flow of pressurized fluid from an adjustable pressure reduction valve is permitted or interrupted by a control valv... | 10/04/1983 |
| 3990240 | Control method and apparatus for processing tools A method of controlling the advance and retraction of a tool on a processing machine in dependence of mechanical properties of the workpiece which tool communicates hydraulically on one hand with a drive means and on the other hand via a shut-off member o... | 11/09/1976 |
