Dual seal
US6561519B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Nov 8, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3232
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pair of spaced apart radial shaft seals are held together by an interlocking pair of support members. The support members form an inner cavity which is in flow communication with the annulus between the shaft seals and the shaft. The inner cavity is vented to the atmosphere by means of a partial hole formed in the outer diameter portion of the support members. Any fluid that accumulates between the seals in the annulus is permitted to drain out through the inner cavity and the vent hole. The vent hole also prevents the formation of a vacuum in the annulus during operation. A channel between the support members is in flow communication with the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.