Screw device
US11525498B2 · kind B2 · utility
1Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Aug 8, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/012
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw device is provided which can detect damage to a groove of a screw shaft, the damage being hidden by a nut, with a high probability. At least two circulation components are mounted on a nut in such a manner as to form at least two circulation circuits that circulate rolling elements. The nut is provided with a sensor that detects a displacement of a groove of a screw shaft between the adjacent circulation circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.