Roller screw mechanism
US11248690B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 18, 2018 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Sep 3, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/2252
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a roller screw mechanism comprising a screw (110) provided with an external thread; a nut (130) coaxially surrounding the screw (130) and provided with an internal thread; and rollers (120), each of which is provided with an external thread, each roller (120) being interposed between the screw (110) and the nut (130) so that the threads of the rollers mesh with the threads of the screw and of the nut; said roller screw mechanism being characterized in that the threads of the rollers are complementary to the threads of the screw and of the nut so that, at zero load, the threads of the rollers co-operate on both of their flanks with the threads of the screw and of the nut in a contact geometry having curvilinear segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.