Seal assembly and seal guard for a universal joint
US6095925A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1997 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Oct 10, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C21/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal assembly and seal guard are provided for a bearing cup positioned on a trunnion of a universal joint. The seal assembly includes a support ring and an elastomeric seal. The support ring is generally L-shaped in cross section, having a lower radial flange that is connected to an axial portion. The axial portion of the support ring is press fit within an inner bearing surface of the bearing cup. The support ring flange extends radially outwardly adjacent the open end of the bearing cup. The elastomeric seal is disposed within the support ring axial portion. An annular elastomeric seal guard is removably secured to the seal assembly. The seal guard is generally funnel shaped. The seal guard has an upper body with an annular interior groove. The interior groove has a diameter slightly larger than the diameter of the support ring flange. Thus, the seal guard can be secured to the support ring flange. The seal guard has a lower body inclined radially inwardly from the upper body. The lower body has an interior annular sealing surface. The seal guard interior sealing surface defines an inner diameter that is smaller than a diameter of a outer sealing surface along the circumference…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.