Slip joint seal for a driveshaft
US5299982A · kind A · utility
Inventor
Key dates
| Filing date | Aug 15, 1991 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Aug 15, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D3/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A slip joint seal for a driveshaft is between two universal joint yokes. A male splined shaft rotates with a first yoke and a female splined shaft rotates with a second yoke, with the two being mechanically engaged for slidable but nonrotational movement during operation of the driveshaft. A sealing sleeve extends from the first yoke around the male splined shaft and is of a larger diameter than the female splined shaft. The female splined shaft has a single, outwardly-facing, annular seal at its outer end, away from the second yoke, which seal engages the inner surface of the sealing sleeve. The female splined shaft also has a grease fitting for supplying grease to the shafts, with excess grease being capable of passing by the seal, which also acts as a wiper to remove contaminants within the sealing sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.