English to French Tech/Engineering Patents (in a patent) DIE CUSHION DEVICE AND METHOD OF CONTROLLING THE DIE CUSHION DEVICE

the second fluid-pressure circuit includes a pilot drive type check valve (141) configured to prevent the operation fluid from flowing out from the rod side fluid-pressure chamber of the fluid-pressure cylinder, and
the pressurization controller is configured to control pilot pressure before the die cushion force control starts to cause the pilot drive type check valve to close, and to prevent the operation fluid from flowing out from the rod side fluid-pressure chamber of the fluid-pressure cylinder.