Ball screw-nut machine with a lubricant supply member
US5749266A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Apr 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19991
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball screw-nut machine is disclosed in which a number of ball rolling elements are interposed between the spiral thread of a ball screw shaft and a ball nut, wherein the opposed threads of the shaft and nut define a load element rolling space. The balls circulate endlessly in plural endless circulation paths which are each formed by the combination of the load element rolling space and a ball circulating path. A lubricant supply member is disposed between the endless circulation paths so as to supply the balls and threads with lubricant. The lubricant supply member is formed of a lubricant-containing polymer. As a result, stable lubrication of the machine is ensured for a long time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.