Two component gasket and method of making it
US3986721A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1975 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | Aug 8, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/924
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the manufacture of a gasket wherein a rigid, compression-limiting component is formed by molding in situ against the side of a preformed compressible gasket component to bond therewith, a narrow channel is pressed into the face of the gasket component during the molding operation. The gasket material is permanently deformed in this channel, which runs on the gasket face adjacent the edge of the side to which the rigid component is molded. The channel provides a durable, reproducible demarcation between the compressible and rigid components. Formation of this channel in molding has been found to prevent flashing of the material being molded, over the gasket face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.