초록 ▼

The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed externally of the

The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed externally of the ribs in each segment. The seal includes grooves positioned over each segment for expansion bands used to compress the seal against the inside of a conduit. The invention also includes an expansion band having a radiused contacting surface which in combination with a locking member of the invention positioned between an outer restraining member and an adjacent rib providing substantially improved sealing.

대표청구항 ▼

[ What is claimed is:] [1.] An internal conduit repair seal for sealing a conduit joint or an area of conduit subject to leakage comprising of an elongated elastomeric member, said elastomeric member comprising:(a) first and second sealing segments positioned on a first side of said elastomeric memb

[ What is claimed is:] [1.] An internal conduit repair seal for sealing a conduit joint or an area of conduit subject to leakage comprising of an elongated elastomeric member, said elastomeric member comprising:(a) first and second sealing segments positioned on a first side of said elastomeric member adjacent to, but spaced from a respective edge of said elastomeric member, each sealing segment comprising at least three spaced apart parallel ribs depending from said first side and being co-extensive with said elastomeric member, and an inner and outer restraining member positioned parallel to but spaced apart from outer ribs in each of said sealing segments said outer restraining member each forming a bulkhead under compression to prevent flow of associated parallel ribs; and(b) first and second grooves formed in a second side of said elastomeric member opposite from said first side, said grooves being co-extensive with each of said first and second sealing segments, and first and second grooves being dimensioned to accommodate an axially radiused compression band for use in compressing said seal segments against a conduit;(c) tapered edges tapered from said second side to said first side adjacent each of said outer restraining members.