Apparatus and method for sealing shafts
US6234414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C4/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Grinders, motors, engines and pumps require sealing, lubrication, and other forms of protection for shafts, bearings and packing. Fluid distribution rings and purge systems are useful aids. This disclosure illustrates a distribution ring in an enclosure surrounding a shaft. A ring surface and a confronting, radially spaced shaft surface define a clearance between them. A fluid supply passage extends from outside the enclosure to this clearance. A first centering member of the ring includes a first centering surface inclined to either side of a reference plane perpendicular to the shaft axis. Connected with a wall of the enclosure is a second centering member with a second centering surface inclined to the reference plane. Contact between the first and second centering surfaces holds the ring in predetermined radial position relative to the shaft, improves fluid distribution throughout the clearance circumference and can help exclude foreign matter from bearings and seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.