the invention the female screw has 6 concave shaped lobes whereas the male screw has 5 convex shaped lobes owing of the number of different lobes relative speeds are in a ratio of 5 6 or 6 5 depending on the screw taken in reference the rotations of the screws are synchronized to this end shafts 6 a 6 b each bear a gear wheel 11 a 11 b cooperating together both gear wheels 11 a 11 b form means for the synchronization of the rotation of shafts 6 a 6 b making it possible to drive said shafts in reversed rotation directions of course the synchronization means will be adapted so as to respect the rotation speed ratios between the screws it is to be noted that any equivalent means for fulfilling the function of synchronizing the rotation speeds may be used in addition one of the shafts 11 a 11 b supports a coupling means forming pinion 7 forming a coupling means with the output pinion 4 of the power take off 2 coupling means forming pinion 7 has a size and a number of teeth lower than the size and the number of teeth of the output pinion 4 of the power take off 2 so as to secure a multiplication of the rotation speed herein for example the multiplication ratio is about 3 thus during operation the movable shafts 6 a 6 b may be driven at high rotation speeds of about 10000 to 20000 rotation minute for example advantageously pinion 7 is removable and may alternatively be mounted on an end of the first shaft 6 a or the second shaft 6 b this embodiment makes it possible to adapt the pressurizing device 1 to the various gear boxes available on the market indeed the.