O-ring seal in channel with fluid pressure equalization means
US4577870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Feb 13, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8671
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus to improve the sealing capabilities of a sealing member. The apparatus comprises a first member having a channel formed therein for receiving the sealing member in sealing engagement with the bottom of the channel. A second member forms a second seal with the sealing member. A number of fluid pressure zones are provided in addition to two fluid passageways to communicate fluid on opposed sides of the sealing member. A means is provided on at least one side of the sealing member to communicate a portion of at least one of the fluids communicated into the pressure zones between two of such pressure zones. A method for using the apparatus to improve the sealing capabilities of a sealing member is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.