Restrained gasket for plastic pipes

A pipe joint comprising:

• a gasket located within an annular groove of a bell socket of a first plastic pipe, the gasket including (a) an inner surface that defines a circumference of a first length and (b) a plurality of segments partially embedded within the gasket, each segment of the plurality of segments having opposing lateral edges and a second length extending to and between the opposing lateral edges;
• and
• a second plastic pipe inserted through an opening defined by the inner annular surface,
• wherein a sum of all of the second lengths is no more than 70% of the first length,
• wherein the plurality of segments are not equidistantly spaced along the inner annular surface.

A pipe joint comprising:

• a gasket located within an annular groove of a bell socket of a first plastic pipe, the gasket including (a) an inner surface that defines a circumference of a first length and (b) a plurality of segments partially embedded within the gasket, each segment of the plurality of segments having opposing lateral edges and a second length extending to and between the opposing lateral edges;
• and
• a second plastic pipe inserted through an opening defined by the inner annular surface,
• wherein a sum of all of the second lengths is no more than 70% of the first length,
• wherein the second plastic pipe includes an exterior face including a first group of spaced-apart indentations formed therein by a first group of the plurality of segments,
• wherein the second plastic pipe includes an interior face including a first group of corresponding protrusions formed by the first group of spaced-apart indentations, and
• wherein the first group of corresponding protrusions form a first contiguous protrusion.

A pipe joint comprising:

• a gasket located within a groove of a bell socket of a first pipe, the gasket including an inner surface defining a circumference having a first length and a plurality of segments partially embedded within the gasket, each segment of the plurality of segments including a spigot tooth;
• and
• a second pipe inserted through an opening defined by the inner surface, the second pipe being impinged upon by the plurality of segments,
• wherein the second pipe includes:
• an exterior face having a first group of space-apart indentations formed therein by a first group of the plurality of segments, the first group of spaced-apart indentations forming a first group of corresponding protrusions on an interior face of the second pipe, the first group of corresponding protrusions forming a first contiguous protrusion.

A pipe joint comprising:

• a gasket located within a groove of a bell socket of a first pipe, the annular gasket including an inner surface defining a circumference having a first length and a plurality of segments partially embedded within the gasket, each segment of the plurality of segments including (a) a spigot tooth, (b) opposing lateral edges, and (c) a second length extending to and between the opposing lateral edges,
• a second pipe inserted through an opening defined by the inner surface, the second pipe being impinged upon by the plurality of segments;
• and
• a plurality of spaced-apart, plastically deformed portions formed in the second pipe by the plurality of segments,
• wherein each spaced-apart plastically deformed portion of the plurality of spaced-apart plastically deformed portions is formed by at least two segments of the plurality of segments
• wherein a sum of all of the second lengths is between approximately 40% to approximately 65% of the first length.

A pipe joint comprising:

• a gasket located within a groove of a bell socket of a first pipe, the annular gasket including an inner surface defining a circumference having a first length and a plurality of segments partially embedded within the gasket, each segment of the plurality of segments including (a) a spigot tooth, (b) opposing lateral edges, and (c) a second length extending to and between the opposing lateral edges,
• a second pipe inserted through an opening defined by the inner annular surface, the second pipe being impinged upon by the plurality of segments;
• a plurality of plastically deformed portions formed in the second pipe by the plurality of segments, each plastically deformed portion being formed by at least three segments of the plurality of segments;
• and
• a non-deformed portion extending to and between each pair of adjacent plastically deformed portions,
• wherein a sum of all of the second lengths is between approximately 40% to approximately 65% of the first length.

An annular gasket comprising:

• an inner surface;
• and
• a plurality of segments partially embedded within the inner surface and arranged into groups of three segments, the groups of three segments comprising at least a first group of three segments and a second group of three segments,
• wherein each of the first group of three segments and the second group of three segments respectively comprises:
• a central segment and two segments adjacent to the central segments on opposite sides thereof, the central segment being separated from the adjacent segments by a distance of a second length,
• wherein the inner surface includes an intermediary portion located between the first group of three segments and the second group of three segments, the intermediary portion spanning a distance of a third length, and
• wherein the third length is longer than the second length.