Labyrinth sealing device having a grease purgeable system
US6471215B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Feb 28, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4474
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A grease purgeable dynamic labyrinth sealing device is disclosed which includes a stator having an annular engagement flange on a radially inner portion thereof and a rotor having an annular engagement flange on a radially outer portion thereof. The stator annular engagement flange and the rotor annular engagement flange have coacting means for mechanically interlocking the stator and the rotor. In one embodiment, means, such as, for example, a plurality of apertures, are operatively formed in the stator for allowing excess grease applied to the bearing housing to move through the stator and out of the stator such that the grease purgeable dynamic labyrinth sealing device maintains proper position relative to the bearing housing and is rotatable with the shaft. In another embodiment, means, operatively formed on the rotor, are provided for reducing the size of the contacting surface area between the stator and the rotor such as, for example, an annular ring or protrusion formed on the surface of the rotor which contacts the stator or vice versa. In yet another embodiment, means are operatively formed on the stator, for increasing the resistance of the stator to move away from the b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.