Sealing device
US11835136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2020 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Apr 15, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3456
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing device capable of suppressing depletion of lubricant is provided. A sliding surface of a side lip 220 at a position away from a distal end of the side lip 220 is provided with a plurality of annular grooves 222 adjacent each other, each of all parts that form annular protrusions 223 between adjacent annular grooves 222 protrudes most at a center in a width direction thereof, with an amount of protrusion gradually decreasing with increasing separation from the center, and both sides of the center in the width direction are symmetric in shape. A tip portion of the sliding surface of the side lip 220 on the distal side of a region, which is provided with the plurality of annular grooves 222, is configured to make a planar contact with an end face of the annular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.