Ball screw lubricated with oil-containing polymer
US5906136A · kind A · utility
22Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Feb 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19707
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Nut 2 in threadable engagement with the screw shaft 1 of a feed screw apparatus is fitted with a lubricant supply device 30 which also serves as a seal. This device is made of a lubricant-containing rubber or synthetic resin and has a plurality or projections 31 in the inner surface that contact the outer circumference of the screw shaft 1. The lubricant in said rubber or synthetic resin slowly seeps out unoxidized for an extended period of time to perform effective lubrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.