Pipe coupling for plain ended pipe and for plain ended pipe attached to grooved pipe

A coupling segment for a segmented pipe coupling for use in securing the ends of a pipe together, said coupling segment including:

• at least two channels, one of said at least two channels provided adjacent each opposite side edge of said coupling segment;
• at least one cutter member secured within at least said one of said at least two channels by means for securing said at least one cutter member within at least said one of said at least two channels, said means for securing being applied to said at least one cutter member and to at least said one of said at least two channels;
• said coupling segment formed of a first material and said at least one cutter member formed of a second material;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• at least one of said at least one cutter member being of a shape in radial cross-section having four sides, two of said four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• said second material being predeterminedly selected such that said cutting edge can bite into the material forming the pipe;
• and
• at least said one of said at least two channels having a wall contacting a side of said two of said four sides along substantially an entire length of said side.

A plurality of coupling segments for a segmented pipe coupling for use with plain ended pipe, each coupling segment of said plurality of coupling segments including:

• at least two channels;
• at least one cutter member of high strength steel secured within each channel of said at least two channels, two of said at least two channels being adjacent respective opposite side edges of said coupling segment;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of said four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• adjacent coupling segments of said plurality of coupling segments having means for indicating when the strength of connection between said adjacent coupling segments is acceptable;
• one of said at least one cutter member having a side of said two of said four sides contacting a wall of one of said at least two channels along substantially an entire length of said side.

A plurality of coupling segments for a segmented pipe coupling for use in securing the ends of a pipe together, each coupling segment of said plurality of coupling segments including:

• at least two channels;
• at least one cutter member secured within said coupling segment, at least one of said at least one cutter member being in each of said at least two channels;
• said coupling segment formed of a first material and said at least one cutter member formed of a second material;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of said four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• said second material being predeterminedly selected such that said cutting edge can bite into the material forming the pipe;
• adjacent coupling segments of said plurality of coupling segments having means for indicating when the strength of connection between said adjacent coupling segments is acceptable;
• one of said at least one of said at least one cutter member having a side of said two of said four sides contacting a wall of one of said at least two channels along substantially an entire length of said side.

A coupling segment for a segmented pipe coupling for use with a plain ended pipe juxtaposed to a grooved ended pipe, said coupling segment including:

• at least one channel, one of said at least one channel provided adjacent a first side edge of said coupling segment;
• at least one cutter member of high strength steel secured within at least said one of said at least one channel;
• and
• a key provided adjacent a second side edge of said coupling segment;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of four four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• at least said one of said at least one channel having a wall contacting a side of said two of said four sides of one of said at least one cutter member along substantially an entire length of said side.

A coupling segment for a segmented pipe coupling for use in securing the ends of a pipe together, said coupling segment including:

• at least one channel, one of said at least one channel provided adjacent a first side edge of said coupling segment;
• at least one cutter member secured within at least said one of said at least one channel;
• a key provided adjacent a second side edge of said coupling segment;
• said coupling segment formed of a first material and said at least one cutter member formed of a second material;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of said four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• said second material being predeterminedly selected such that said cutting edge can bite into the material forming the pipe;
• and
• at least said one of said at least one channel having a wall contacting a side of said two of said four sides of one of said at least one cutter member along substantially an entire length of said side.

A plurality of coupling segments for a segmented pipe coupling for use with a plain ended pipe juxtaposed to a grooved ended pipe, each coupling segment of said plurality of coupling segments including:

• at least one cutter member of high strength steel secured within said coupling segment adjacent a first side edge of said coupling segment;
• at least one channel, one of said at least one channel being provided adjacent said first side edge of said coupling segment;
• a key provided adjacent a second side edge of said coupling segment;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of said four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• adjacent coupling segments of said plurality of coupling segments having means for indicating when the strength of connection between said adjacent coupling segments is acceptable;
• at least said one of said at least one channel having a wall contacting a side of said two of said four sides of one of said at least one cutter member along substantially an entire length of said side.

A plurality of coupling segments for a segmented pipe coupling for use in securing the end of a plain ended pipe and the end of a grooved ended pipe together, each coupling segment of said plurality of coupling segments including:

• at least one channel;
• at least one cutter member secured within said coupling segment in said at least one channel;
• a key provided within said coupling segment;
• said coupling segment formed of a first material and said at least one cutter member formed of a second material;
• said at least one cutter member being arcuate about a radius and concentric with an inner radius of said coupling segment;
• said at least one cutter member having a radially innermost edge providing a cutting edge;
• said at least one cutter member being of a shape in radial cross-section having four sides, two of four four sides being longer than the remaining two sides, said two of said four sides being substantially parallel and linear;
• said second material being predeterminedly selected such that said cutting edge can bite into the material forming the pipe;
• adjacent coupling segments of said plurality of coupling segments having means for indicating when the strength of connection between said adjacent coupling segments is acceptable;
• at least one of said at least one channel having a wall contacting a side of said two of said four sides of one of said at least one cutter member along substantially an entire length of said side.