Unitized radial shaft seal
US5186472A · kind A · utility
31Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3256
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A unitized seal includes a first seal casing having a radially-extending unitizing flange and a second seal casing having an annular elastomeric bumper. The bumper has an engagement surface which confronts the unitizing flange for engagement therewith. Upon installation of the seal, the unitizing flange compresses the bumper. Upon initial rotation of the seal, the unitizing flange slices into the bumper so as to form a labyrinth-type seal. This arrangement reduces running torque and seal lip temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.