Dual labyrinth fluid seal with fluid slinger
US4531746A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1982 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Dec 10, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4476
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid seal device (10) has a plurality of non-contacting fluid seals located at the operative interface (16) between a stationary member (18) and a rotatable member (20) for preventing the leakage of a fluid from a fluid chamber (14). The first of the non-contacting seals (24) is a labyrinth seal (32) located adjacent the fluid chamber (14). The second non-contacting seal (40) is a spiral groove (42) located adjacent and in serial relation to the labyrinth seal (32). A third non-contacting seal (60) is a fluid slinger (62) which is located between the fluid chamber (14) and the labyrinth seal (32) for directing fluid (12) away from the path of operative interface (16). The fluid seal device (10) eliminates friction and increases the life expectancy thereof when used at the operative interface (16) between a stationary member (18) and a rotatable member (20) such as a crankshaft and block of an engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.