Driveshaft with slip joint seal
US5230658A · kind A · utility
Inventor
Key dates
| Filing date | Apr 6, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Apr 6, 2012 |
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 first outwardly-facing, annular seal at its outer end, away from the second yoke, which seal engages the inner surface of the sealing sleeve. A propeller shaft is affixed to the end of the female splined shaft toward the second yoke and to the second yoke, preferably being of the same diameter as the sleeve. A second annular seal which is the same size and the first one is carried by an end of the male splined shaft beyond the female shaft. The second seal engages the inner surface of the propeller shaft. The female splined shaft also has a grease fitting for supplying grease to the shafts between the two annular seals. Splines and grooves of the male and female shafts are designed to enable grease to readily move past them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.