Seal with spiral grooves and mid-lip band
US8454025B2 · kind B2 · utility
1Cited by
63References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jan 14, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dynamic seal advantageously utilizes a plurality of grooves on the active side or surface of the seal to capture a leaked lubricant and hydrodynamically pump the lubricant back into the lubricated side of the seal. The grooves are interrupted at an intermediate location by a continuous circumferential band that aids in preventing leakage past the band when the shaft is not rotating and the grooves on both sides of the band pump contaminants away from the sealing lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.