Composite radial seal
US5269537A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3208
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A composite radial seal for sealing the rod end of a hydraulic cylinder or suspension strut is disclosed. The composite seal includes a high abrasion resistant elastomeric seal ring having an elongated body. The body has a pressure end and a non-pressure end, with the pressure end having a U-cup configuration and a first dynamic seal lip and the non-pressure end having an enclosed annular cavity and a second dynamic seal lip. The cavity contains and is filled with a highly resilient energizer ring. Seal also includes an integral anti-extrusion ring that is bonded to the non-pressure end of the seal ring body adjacent and on the non-pressure side of the second seal lip to prevent extrusion of the seal lip into a clearance gap between a rod and a head of the cylinder or strut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.