Process for improving the mechanical and sealing properties of elastomer gaskets, joints and seals and the seal obtained with this process
US5489631A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1994 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Feb 17, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for the improving the mechanical properties and the sealing properties of elastomer gaskets. The elastomer is prepared by adding to an elastomer composition, at the time of the preparation phase, fibers having an average length on the order of 2 to 12 mm. The elastomer is molded, by injection or by compression transfer, such that the orientation of the fibers in the elastomer is obtained by positioning and orienting of the nozzle or the channel inlets into the mold cavity. The fibers, embedded in the elastomer have an orientation that is, parallel to a surface against which a ridge of the closure device comes into contact and perpendicular to the closure device when the butterfly valve is shut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.