Coupling having seal with retracting center leg

COUPLING HAVING SEAL WITH RETRACTING CENTER LEG Abstract A coupling for joining pipe elements has segments surrounding a central space with cusps which engage lobes of a seal to maintain the segments in spaced apart relation in a preassembled state. While the coupling is in the preassembled state th...

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1. Verfasser: BANCROFT, Philip Wayne
Format: Patent
Sprache:eng
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Zusammenfassung:COUPLING HAVING SEAL WITH RETRACTING CENTER LEG Abstract A coupling for joining pipe elements has segments surrounding a central space with cusps which engage lobes of a seal to maintain the segments in spaced apart relation in a preassembled state. While the coupling is in the preassembled state the pipe elements may be inserted into the central space without disassembling the coupling, and portions of the seal adjacent to attachment members on the segments seat within a channel defined by the segments between the cusps. When the seal is compressed between the segments and the pipe elements to form a joint the seal deforms so as to withdraw a center leg of the seal from the flow path defined within the pipe elements. Fig 1 & Z s-Acx