Patent ID: 9267587
Filing Date: 2016-02-23
CPC Classification: F16H

Claim Text:
1. A roller screw mechanism provided with a screw comprising: an external thread, a nut surrounding and coaxial with the screw, the nut having an internal thread, two gear wheels mounted in a non-threaded part of the nut, each gear wheel including a first set of teeth having a plurality of internal teeth, and a plurality of rollers radially located between the screw and the nut, each of the plurality of rollers providing a roller external thread designed to engage the external and internal threads of the screw and the nut, respectively, and axially at each end a first set of roller teeth having a plurality of gear teeth designed to engage with the plurality of internal teeth of the gear wheels, wherein an outer diameter of the first set of roller teeth of each of the plurality of rollers is less or equal to a diameter of a thread root of the roller external thread of the plurality of rollers, wherein the addendum of each tooth of the plurality of gear teeth of each of the plurality of rollers is equal to zero.