Air-cooled shaft seal
US6264447A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Oct 11, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C15/0038
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air-cooled shaft seal comprises an annular body having an inner surface and an outer surface. One or more helical channels are formed on the inner surface. A plurality of external surfaces such as radial fins are disposed in axially spaced relationship on the outer surface, and extend radially in a direction away from a longitudinal axis of the annular body. The external surfaces present a substantially increased surface area through which heat energy is transferred from polymeric material contained in the seal to the atmosphere. The seal may be installed on one or shafts of a gear pump for transporting a viscous material under pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.