Rotating pumping apparatus with seal mechanism
US9638328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Feb 21, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/002
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotating pumping apparatus is provided which may be employed in an automotive brake system. The rotating pumping apparatus includes a sealing member and an oil seal which are disposed around a pump drive shaft, and lubricating grease disposed between the oil seal and the pump drive shaft. The sealing member is made up of a resinous ring and a rubber cup. The sealing member has formed therein a labyrinthine flow path which extends from the resinous ring to the rubber cup. The labyrinthine flow path is designed to permit fluid to flow therethrough and create the resistance to flow of the lubricating grease to avoid leakage of the grease outside the sealing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.