Preloading device for a roller screw mechanism guided in rotation
US10309503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Oct 22, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18576
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A linear actuator comprises a roller screw mechanism guided in rotation with respect to a structure by two angular-contact ball bearings, the roller screw mechanism comprising rollers interposed between an endless screw and two tapped rings which are joined together in rotation and free in translation. Each tapped ring is secured to an inner ring of a ball bearing. The linear actuator further comprises a single preloading device capable of applying load between two outer rings of the angular-contact ball bearings respectively, thereby simultaneously allowing the loading of the roller screw mechanism and the rotational guidance of the roller screw mechanism with respect to the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.