High pressure generating apparatus

摘要

A high-pressure generating apparatus including a high-pressure chamber, a low-pressure chamber located beneath the high-pressure chamber and having a diameter substantially larger than the diameter of the high-pressure chamber, a tandem piston having first and second portions displaceable in the high-pressure and low-pressure chambers, respectively, for building-up pressure therein, and a yoke embracing the high-pressure and low-pressure chambers for applying a pressure force to the high-pressure chamber cover and the low-pressure chamber bottom upon built-up of pressure in the high pressure and low-pressure chambers.