Sealing device
US5172921A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1992 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | May 26, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/943
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing device for sealing between two cylindrical members including a sealing ring and at least one other element arranged in a sealing groove in one of the members. The sealing ring is pre-stressed in its circumference and urged against the other member for dynamic sealing against this member and the other element is pre-stressedly arranged against the sealing ring for obtaining sealing between the sealing ring and the sealing groove. The sealing ring includes a substantially deformation stable, elastic and at least to a main part hard material providing a substantial, not deformed cross-section. Moreover, the sealing ring is thin having such a small radial middle height (h.sub.m) according to the formula ##EQU1## where A is the cross-section area of the sealing ring and b its radial width, that the sealing ring has acceptable maximum pre-loading surface pressure p against the other member considering the material and surface structure of this member and the lubricating qualities of the medium according to the formula EQU p=2A.multidot..DELTA.d.multidot.E/b.multidot.d.sup.2. where E is the co-efficient of elasticity of the sealing ring, d its diameter and d its diametrical elas…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.