Radial shaft seal, radial shaft seal assembly and method of installation
US9062773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Jul 22, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the seal is provided. The seal includes a mounting portion and a seal lip having a sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends in radially overlying relation to the seal lip. A projection extends from the first hinge away from the bridge. A plurality of ribs extend radially inwardly from the projection. The ribs minimize friction between the seal and the shaft during installation and prevent the seal lip from inverting during the oil-side installation assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.