Low friction drag seals
US4262915A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Oct 30, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/944
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A low friction drag seal is provided for use between a housing and a linearly movable cylindrical member subject to fluid pressure in the form of an annular chamber surrounding the cylindrical member in one of the housing and cylindrical member, a generally right triangular cross section elastomer ring in said annular chamber surrounding said cylindrical member and in contact with a relatively movable surface on one of the cylinder and housing at an apex of said elastomer ring and a generally rigid back up ring having an inclined surface extending away from said relatively movable surface and in contact with the hypotenuse of the generally triangular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.