Recirculating-ball nut and screw set with lubricating means
US6634246B2 · kind B2 · utility
23Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19991
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A recirculating-ball nut and screw set mounted with a lubrication device effective in improving the sliding characteristic and also realizing maintenance-free lubrication. The lubrication device is mainly comprised of a lubricating plate accommodated in a holder attached to a ball nut. The lubricating plate is made with a tongue that will come into sliding engagement with a helical groove formed around a screw shaft. The lubricating plate is made of a sintered resinous component of porous structure in which cells are impregnated with lubricant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.