Split Ring Coupling
First Claim
Patent Images
1. A coupling for joining pipe elements in end to end relation, said coupling comprising:
- a plurality of segments attached to one another end to end in spaced apart relation and surrounding a central space for receiving said pipe elements, each of said segments having a channel extending between said ends, each of said segments having first and second grooves extending between said ends, said grooves being positioned in spaced relation from one another on opposite sides of said channel, each of said grooves defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, each said floor surface comprising first and second surface portions arranged respectively at opposite ends of said segments and a third surface portion positioned therebetween, said first and second surface portions each having a greater radius of curvature than said third surface portion;
a first split ring positioned within said first groove and a second split ring positioned within said second groove, said first and second split rings engaging said first and second surface portions of said floors in said first and second grooves.
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Abstract
A pipe coupling has segments attached end to end to define a central space that receives pipe elements inserted between the segments. The segments are supported on split rings received within grooves in each segment. The segments are supported in spaced relation in a preassembled state to permit insertion without disassembly of the coupling. The grooves in the segments have a floor surface with three surface portions. Two of the surface portions on each groove of each segment engage the split rings when the segments are supported in spaced relation.
62 Citations
46 Claims
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1. 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 end to end in spaced apart relation and surrounding a central space for receiving said pipe elements, each of said segments having a channel extending between said ends, each of said segments having first and second grooves extending between said ends, said grooves being positioned in spaced relation from one another on opposite sides of said channel, each of said grooves defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, each said floor surface comprising first and second surface portions arranged respectively at opposite ends of said segments and a third surface portion positioned therebetween, said first and second surface portions each having a greater radius of curvature than said third surface portion; a first split ring positioned within said first groove and a second split ring positioned within said second groove, said first and second split rings engaging said first and second surface portions of said floors in said first and second grooves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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 end to end in spaced apart relation and surrounding a central space for receiving said pipe elements, each of said segments having a channel extending between said ends, each of said segments having at least one groove extending between said ends, said at least one groove being positioned adjacent to said channel, said at least one groove defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, said floor surface comprising first and second surface portions arranged respectively at opposite ends of said segments and a third surface portion positioned therebetween, said first and second surface portions each having a greater radius of curvature than said third surface portion; a split ring positioned within said at least one groove, said split ring engaging said first and second surface portions of said floor surface. - View Dependent Claims (16, 17, 18, 19, 20, 22, 23)
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24. 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 end to end in spaced apart relation and surrounding a central axis and defining a central space for receiving said pipe elements; each of said segments having a channel defined by a back wall extending between said ends of said segments, each of said back walls having a surface facing said central axis; each of said segments having first and second grooves extending between said ends, said grooves being positioned in spaced relation from one another on opposite sides of said channel, each of said grooves defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, each said floor surface facing said central axis; a first split ring positioned within said first groove and a second split ring positioned within said second groove of said segments, at least one of said first and second split rings engaging at least one of said floor surfaces in one of said first and second grooves proximate to said ends of said at least one segment and thereby supporting said segments in said spaced apart relation;
wherein, for said at least one segment;a distance between said surface of said back wall and said floor surface, as measured along a radially projecting line extending from said central axis, being a first value at a first point midway between said ends of said at least one segment, and a second value at a second point proximate to at least one of said ends of said at least one segment, said first value being greater than said second value. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. 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 end to end in spaced apart relation and surrounding a central axis and defining a central space for receiving said pipe elements; each of said segments having a channel defined by a back wall extending between said ends, each of said back walls having a surface facing said central axis; each of said segments having at least one groove extending between said ends of said segments, said at least one groove being positioned adjacent to said channel, said at least one groove defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, said floor surface facing said central axis; a split ring positioned within said at least one groove, said split ring engaging said floor surface in at least one of said grooves proximate to said ends of at least one of said segments and supporting said segments in said spaced apart relation;
wherein, for at least said one segment;a distance between said surface of said back wall and said floor surface, as measured along a radially projecting line extending from said central axis, being a first value at a first point midway between said ends of said at least one segment, and a second value at a second point proximate to at least one of said ends of said at least one segment, said first value being greater than said second value. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. 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 end to end in spaced apart relation and surrounding a central space for receiving said pipe elements, each of said segments having a channel extending between said ends, each of said segments having first and second grooves extending between said ends, said grooves being positioned in spaced relation from one another on opposite sides of said channel, each of said grooves defined by two side surfaces arranged in spaced relation and a floor surface extending therebetween, each said floor surface comprising first and second surface portions arranged respectively at opposite ends of said segments and a third surface portion positioned therebetween, said first and second surface portions each having a center of curvature offset from a center of curvature of said third surface portion; a first split ring positioned within said first groove and a second split ring positioned within said second groove, said first and second split rings engaging said first and second surface portions of said floors in said first and second grooves and supporting said segments in said spaced apart relation.
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Specification