Recirculating ball screw assembly
US9022193B2 · kind B2 · utility
1Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19767
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Ball screws are described that may be incorporated into other devices such as a pulley assembly or a differential device. The ball screws include a threaded shaft defining a central longitudinal axis with a threaded nut threadedly coupled thereto to define at least one track in between them. Each track forms a continuous loop around an infield protrusion and is filled with a plurality of rolling elements filling. Each rolling element has the same radius from the central longitudinal axis such that the nut can rotate at higher speeds without the rolling elements locking up as a result of centripetal force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.