Oil seal
US8622397B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3232
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.