Flexible ring seal with insert in circumferentially extending channel
US4706970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1984 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Nov 14, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3212
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An insert for use with a sealing device having a flexible ring with a circumferentially extending channel which opens in an axial direction at one end of the ring. The channel is bounded by the ring's sidewalls which have external sealing faces engageable with the moving surfaces to be sealed. The insert is comprised of a seal-reinforcing ring having aa flat annular disk and an annular projection extending at least in one axial direction from the disk. The annular projection substantially corresponds in size and configuration to the cross-sectional size and configuration of the channel and is insertable into the channel. The disk defines radially extending seating surfaces disposed at the one end of the ring when the projection is inserted into the channel and limits the depth of the extension of the projection therein. The insert ring is designed with an axial projection extending in one direction away from the seating portion or disk or in opposite directions away from the disk. In either form, the insert ring may be used in combination with a single sealing device or pair of sealing devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.