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Method of making a gasket having an elastomeric seal
| Details |
Inventors: Mockenhaupt, Martin; Henhapl, Albert; Estrich, Paul;
Assignee: Fel-Pro Incorporated (Skokie, IL)
Primary Examiner: Silbaugh; Jan H.
Assistant Examiner: Lee; Edmund H.
Attorney, Agent or Firm: Reising, Ethington, Barnes, Kisselle, Learman & McCulloch, PC
An gasket having a molded plastic carrier and an edge-molded seal in an opening through the carrier. The wall surface of the opening has inwardly projecting anchors formed of an inner plate and a radial hub. The seal is molded to the anchors and is held in place thereby. |
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DETAILED DESCRIPTION In accordance with the present invention, a method of making a gasket having an elastic seal molded thereto is provided comprising the steps of providing a molded plastic carrier defining a carrier surface against which an elastomeric seal is to be molded, the carrier surface defining a plurality of anchors projecting therefrom, each anchor comprising a hub extending outwardly from the carrier surface and a protuberance at the end of the hub, the hub having a first cross-sectional dimension and the protuberance having a second cross-sectional area which is at least twenty percent greater than the first cross-sectional area, then molding an elastomeric seal against the carrier surface by flowing molten elastomer to fully embed the hubs and protuberances within the molten elastomer, whereby when the elastomer solidifies, the anchors secure the elastomeric seal to the plastic carrier.
In one form the carrier surface comprises a wall of an opening through the carrier.
In a preferred form the protuberance is a plate spaced from the carrier wall surface by the hub, and the carrier wall surface comprises a generally cylindrical opening and the hub projects radially inwardly of the cylindrical opening.
The invention also comprises a gasket having a plastic carrier and an elastomeric seal molded thereto, the plastic carrier defining at least one opening therethrough and having a wall surface therearound.
The elastomeric seal is molded to and against the wall surface.
The wall surface has a plurality of anchors projecting inwardly therefrom, each anchor comprising an inner member and a hub connecting the inner member to the wall surface, the hub having a cross-sectional dimension which is less than the cross-sectional dimension of the inner member, the anchors being embedded in the elastomeric seal thereby securing the seal in the opening and against the wall surface.
Further objects, features and advantages of the present invention will become apparent from the following description and drawings
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