Patent ID: 8550502
Filing Date: 2013-10-08
Classification: B23P,B33Y,F16J,F16L,Y10T

Abstract:
1. A coupling for joining a first pipe and a second pipe, comprising: an upper housing; a lower housing; at least one fastening device coupling the upper housing to the lower housing; and a gasket positioned within the upper and lower housings, the gasket including two primary seals, each primary seal formed on an outer edge of the gasket, and at least two secondary seals, each secondary seal formed on a rib protruding from an inner surface of the gasket and between the two primary seals, the primary seals and the secondary seals slideable over the first pipe end such that at least a portion of the first pipe extends axially beyond each edge of the gasket; a first primary seal of the two primary seals and a first secondary seal of the two secondary seals contactable with an exterior surface of the first pipe when the first pipe and the second pipe are joined end-to-end; and A second primary seal of the two primary seals and a second secondary seal of the two secondary seals contactable with an exterior surface of the second pipe when the first pipe and the second pipe are joined end-to-end.