Seal Having Projections and Coupling Having Pockets
First Claim
1. A seal, comprising:
- a back wall extending circumferentially to form a ring having an outwardly facing circumferential surface;
first and second side walls positioned in spaced apart relation on opposite sides of said ring, said side walls being attached to said back wall and extending substantially radially inwardly therefrom;
a first lip attached to said first sidewall;
a second lip attached to said second sidewall, said lips extending circumferentially around said ring and projecting toward one another;
at least one projection attached to said outwardly facing circumferential surface and projecting outwardly therefrom, said projection comprising a tube having a sidewall surrounding a bore.
1 Assignment
0 Petitions
Accused Products
Abstract
A ring-shaped seal has projections on an outwardly facing surface in the form of tubes which have a longitudinal axis oriented perpendicular to a plane containing the ring. The seal is received within a channel defined by segments attached end to end forming a coupling for coupling pipe elements in end to end relation. The segments have pockets which receive the projections. The projections support the segments in spaced apart relation to allow the pipe elements to be inserted into the coupling without loosening or disassembling it. The projections deform when the segments are drawn toward one another by adjustably tightenable fasteners and allow the segments to engage and capture the pipe elements in end to end relation.
39 Citations
32 Claims
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1. A seal, comprising:
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a back wall extending circumferentially to form a ring having an outwardly facing circumferential surface; first and second side walls positioned in spaced apart relation on opposite sides of said ring, said side walls being attached to said back wall and extending substantially radially inwardly therefrom; a first lip attached to said first sidewall; a second lip attached to said second sidewall, said lips extending circumferentially around said ring and projecting toward one another; at least one projection attached to said outwardly facing circumferential surface and projecting outwardly therefrom, said projection comprising a tube having a sidewall surrounding a bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A coupling for joining pipe elements in end to end relation, said coupling comprising:
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a plurality of segments attached to one another in end to end relation surrounding a central space, each of said segments having a back wall and a pair of side walls attached thereto in spaced relation defining a channel, each of said back walls having a back wall surface facing said central space and extending lengthwise along each of said segments, each of said segments having a pair of arcuate keys positioned in spaced relation on opposite sides of said channel, each of said keys extending lengthwise along said segments and projecting inwardly toward said central space; a seal positioned within said central space and received within said channels, said seal comprising a ring formed of flexible, resilient material, said ring having an outwardly facing circumferential surface; at least one projection attached to said outwardly facing circumferential surface and projecting outwardly therefrom, said one projection comprising a tube having a sidewall surrounding a bore, said one projection engaging said back wall surface on one of said segments and supporting said segments in spaced apart relation to one another. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification