Dry running coolant union
US6308734A · kind A · utility
14Cited by
20References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Sep 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86268
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotary union for delivery of a coolant fluid to a spindle of a metal working machine comprises a housing having a cylindrical bore containing bearings for journaling a tubular shaft therein wherein the improvement resides in the provision of a floating bushing seal as the high-pressure seal. The floating bushing seal assembly includes a seal housing containing a plurality of longitudinally disposed bushing rings that have a low clearance fit with respect to the tubular shaft of the rotary union.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.