Coupling

Abstract

A pipe coupling has two segments with lugs adapted to receive an adjustable fastener to draw the segments together to join pipe elements. Each lug has an inner surface and a stop surface in spaced relationship. When the adjustable fastener is tightened, the stop surfaces on the corresponding lugs contact each other.

Description

[0001] Cross-reference to related applications This application is based on and claims priority to U.S. Provisional Application No. 63 / 589060, filed October 10, 2023, which is incorporated herein by reference. Technical Field

[0002] This invention relates to mechanical couplings for connecting pipe components. Background Technology

[0003] Advantageously, it is advantageous to install connectors with segments that can be connected to each other at one end and then at the other. Segments designed to be fully tightened to each other at one end and then at the other take less time to install compared to segments that are installed by gradually tightening the fasteners. Segments with bolt washers having external portions that contact each other when tightened reduce the possibility of overtightening and provide visual indication of complete and proper assembly. Tolerance ranges in the pipe elements and on the mating surfaces of the connector can cause gaps between segments. These gaps can expose and / or allow washers to bulge out. Furthermore, exposed washers can incorrectly indicate to the installer that the connector is not fully or properly installed. There is clearly an opportunity to improve segmented mechanical connectors, making them easier to assemble, providing consistent and clear visual indication of proper installation, and protecting and properly compressing the washers. Summary of the Invention

[0004] An example connector according to the invention for connecting tubular elements end-to-end includes a first segment and a second segment, which are attached end-to-end to each other to enclose a central space for receiving the tubular element. Each segment includes a first lug extending from its first end and a second lug extending from its second end. A first adjustable fastener extends between the first lugs along a first longitudinal axis, and a second adjustable fastener extends between the second lugs along a second longitudinal axis. Each segment further includes a first inner surface positioned between the central space and the first lug. The first inner surface includes a first tooth and a first recess. Each segment further includes a first stop surface positioned on the first lug. The first adjustable fastener is positioned between the first inner surface and the first stop surface. Each segment further includes a second inner surface positioned between the central space and the second lug. The second inner surface includes a second tooth and a second recess. Each segment further includes a second stop surface positioned on the second lug. The second adjustable fastener is positioned between the second inner surface and the second stop surface. The first and second segments are movable toward each other to a tightened state. The first and second adjustable fasteners are configured to pull the first and second segments toward each other into a tightened state. In the tightened state, a first stop surface at the first end of the segment engages and a second stop surface at the second end of the segment engages. A first tooth of the first segment is at least partially received within a first recess of the second segment, and a first tooth of the second segment is at least partially received within a first recess of the first segment.

[0005] In the example embodiment, in the tightened state, the second tooth of the first segment engages with the second recess of the second segment, and the second recess of the first segment engages with the second tooth of the second segment.

[0006] In the example embodiment, in the tightened state, there is a first gap between the first stop surfaces.

[0007] In another example embodiment, in the tightened state, there is a second gap between the second inner surfaces.

[0008] In an example embodiment, a first lug defines a first opening that surrounds a first axis oriented perpendicular to a first longitudinal axis of the first adjustable fastener and is positioned between a first inner surface and a first stop surface.

[0009] In another example embodiment, the first opening extends through the first lug.

[0010] In an example embodiment, the second lug defines a second opening that surrounds a second axis oriented perpendicular to the second longitudinal axis of the second adjustable fastener and is positioned between the second inner surface and the second stop surface.

[0011] In another example embodiment, the second opening extends through the second lug.

[0012] In the example embodiment, the first tooth of the first segment is aligned with the first recess of the second segment, and the first recess of the first segment is aligned with the first tooth of the second segment.

[0013] In another example embodiment, the first tooth surface is oriented at a first angle relative to a first plane, the first plane including a transverse axis and a first axis and a second axis, the transverse axis being perpendicular to the first longitudinal axis and the second longitudinal axis and the first axis and the second axis being oriented, and wherein the first recessed surface is oriented at a second angle relative to the first plane.

[0014] In another example embodiment, the second angle has a slope opposite to that of the first angle.

[0015] In another example embodiment, the value of the second angle is substantially the same as the value of the first angle.

[0016] In another example embodiment, the slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

[0017] In the example embodiment, the second tooth of the first segment is aligned with the second recess of the second segment, and the second recess of the first segment is aligned with the second tooth of the second segment.

[0018] In another example embodiment, the second tooth surface is oriented at a third angle relative to the first plane, and the second recessed surface is oriented at a fourth angle relative to the first plane.

[0019] In another example embodiment, the third angle has a slope equal to but opposite to that of the first angle, and the fourth angle has a slope equal to but opposite to that of the second angle.

[0020] In an example embodiment, the connector further includes a first pair of shoulders positioned adjacent to the first tooth and the first recess. Each of the first pair of shoulders has a first shoulder surface. The connector further includes a second pair of shoulders positioned adjacent to the second tooth and the second recess. Each of the second pair of shoulders has a second shoulder surface.

[0021] In another example embodiment, the first shoulder surface is oriented substantially parallel to the first plane, and the second shoulder surface is oriented substantially parallel to the first plane.

[0022] In an example embodiment, the first stop surface includes a first portion oriented at a fifth angle relative to the second plane. The second plane includes a first longitudinal axis, a second longitudinal axis, and a transverse axis. The second stop surface includes a first portion oriented at a sixth angle relative to the second plane.

[0023] In another example embodiment, the sixth angle has a slope that is equal to but opposite to that of the fifth angle.

[0024] In another example embodiment, the first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane, and the second stop surface includes at least one second portion oriented at an eighth angle relative to the second plane.

[0025] In another example embodiment, the eighth angle has a slope that is equal to but opposite to that of the seventh angle.

[0026] In another example embodiment, the seventh angle has a slope opposite to that of the fifth angle, and the eighth angle has a slope opposite to that of the sixth angle.

[0027] In an example embodiment, each of the first and second adjustable fasteners includes a nut and a bolt.

[0028] In an example embodiment, each segment includes a first and a second arcuate protrusion positioned on opposite sides of the segment. Each of the first and second arcuate protrusions faces the central space. When the segments are pulled toward each other by the first and second adjustable fasteners, each of the first and second arcuate protrusions is capable of engaging within a circumferential groove in the tubular element.

[0029] In the example embodiment, the seal is positioned within the central space. The seal supports the segments in a spaced relationship sufficient to allow the tubular elements to be inserted into the central space without disassembling the connector.

[0030] An example method of using the coupling according to the invention includes adjusting a first adjustable fastener to pull a first segment and a second segment toward each other. The method includes engaging a first stop surface at a first end of a segment. The method includes adjusting a second adjustable fastener to pull the first segment and the second segment toward each other. The method includes engaging a second stop surface at a second end of a segment.

[0031] In an example embodiment, a first stop surface is engaged at the first end of the segment before adjusting the second adjustable fastener.

[0032] In another example embodiment, the connector is in a tightened state after the second stop surface engages.

[0033] In another example embodiment, the first segment and the second segment are aligned with an axis that is parallel to the first longitudinal axis and the second longitudinal axis and centered between the first longitudinal axis and the second longitudinal axis, and remain aligned in the tightened state.

[0034] An example connector according to the invention for connecting tubular elements end-to-end includes a first segment and a second segment, which are attached end-to-end to each other to enclose a central space for receiving the tubular element. Each segment includes a first end and a second end. Each segment includes a first lug extending from its first end. A first adjustable fastener extends along a first longitudinal axis between the first lugs. A hinge assembly is attached to the second ends of the first and second segments. Each segment further includes a first inner surface positioned between the central space and the first lug. The first inner surface includes a first tooth and a first recess. Each segment includes a first stop surface positioned on the first lug. The first adjustable fastener is positioned between the first inner surface and the first stop surface. The first and second segments are movable toward each other to a tightened state. The first adjustable fastener is configured to pull the first and second segments toward each other to a tightened state. In the tightened state, the first stop surface at the first end of the segment engages, and the first tooth of the first segment is at least partially received in the first recess of the second segment, and the first tooth of the second segment is at least partially received in the first recess of the first segment.

[0035] In the example embodiment, in the tightened state, there is a first gap between the first stop surfaces.

[0036] In an example embodiment, a first lug defines a first opening that surrounds a first axis oriented perpendicular to a first longitudinal axis of the first adjustable fastener and is positioned between a first inner surface and a first stop surface.

[0037] In another example embodiment, the first opening extends through the first lug.

[0038] In the example embodiment, the first tooth of the first segment is aligned with the first recess of the second segment, and the first recess of the first segment is aligned with the first tooth of the second segment.

[0039] In an example embodiment, the first tooth surface is oriented at a first angle relative to a first plane. The first plane includes a transverse axis and a first axis and a second axis. The transverse axis is oriented perpendicular to the first longitudinal axis and the second longitudinal axis, as well as the first axis and the second axis. The first recessed surface is oriented at a second angle relative to the first plane.

[0040] In another example embodiment, the second angle has a slope opposite to that of the first angle.

[0041] In another example embodiment, the value of the second angle is substantially the same as the value of the first angle.

[0042] In another example embodiment, the slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

[0043] In an example embodiment, the connector further includes a first pair of shoulders positioned adjacent to the first tooth and the first recess, each of the first pair of shoulders having a first shoulder surface.

[0044] In another example embodiment, the first shoulder surface is oriented substantially parallel to the first plane.

[0045] In an example embodiment, the first stop surface includes a first portion oriented at a fifth angle relative to the second plane. The second plane includes a first longitudinal axis, a second longitudinal axis, and a transverse axis.

[0046] In another example embodiment, the first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane.

[0047] In another example embodiment, the seventh angle has a slope opposite to that of the fifth angle.

[0048] In an example embodiment, the first adjustable fastener includes a nut and a bolt.

[0049] In an example embodiment, each segment includes a first and a second arcuate protrusion positioned on opposite sides of the segment. Each of the first and second arcuate protrusions faces the central space. When the segments are pulled toward each other by a first adjustable fastener, each of the first and second arcuate protrusions is capable of engaging within a circumferential groove in the tubular element.

[0050] In an example embodiment, the connector further includes a seal positioned within a central space. The seal supports segments in a spaced-out relationship sufficient to allow tubular elements to be inserted into the central space without disassembling the connector. Attached Figure Description

[0051] Figure 1 This is an isometric view of an example mechanical coupling according to the present invention; Figure 2 This is an isometric view of an example segment according to the present invention; Figure 3 yes Figure 1 A transparent side view of a segment of the example mechanical connector shown; Figure 4 yes Figure 1 End view of a segment of the example mechanical connector shown; Figure 4A It is in a tightened state. Figure 4End view of the segment shown; Figure 4B This is an end view of an example segment of an example mechanical connector; Figure 4C It is in a tightened state. Figure 4B An end view of an example segment of an example mechanical connector shown; Figure 4D This is an end view of an example segment of an example mechanical connector; Figure 4E It is in a tightened state. Figure 4D An end view of an example segment of an example mechanical connector shown; Figure 4F This is an end view of an example segment of an example mechanical connector; Figure 4G It is in a tightened state. Figure 4F An end view of an example segment of an example mechanical connector shown; Figure 5 yes Figure 1 The isometric view of the example mechanical connector shown is illustrated, with the example seal shown in a factory-assembled state. Figure 6 yes Figure 11 The example mechanical connector and seal shown are side views; Figure 7 It is in a tightened state under the first tolerance. Figure 1 A side perspective view of a segment of an example mechanical connector shown; Figure 8 yes Figure 7 A magnified view of section 8 in the image; Figure 9 yes Figure 7 A magnified view of section 9 in the image; Figure 10 It is in a tightened state under the second tolerance. Figure 1 A side perspective view of a segment of an example mechanical connector shown; Figure 11 yes Figure 10 A magnified view of section 11 in the image; Figure 12 yes Figure 10 A magnified view of section 12 in the image; Figure 13 This is a front view of the example seal; Figure 14 This is a side view of an example mechanical coupling with three segments according to the present invention; and Figure 15 This is a side view of an example hinged mechanical connector according to the present invention. Detailed Implementation

[0052] Figure 1 An example connector 10 according to the invention is shown for connecting pipe elements (not shown) in an end-to-end relationship. The connector 10 includes a first segment 12 and a second segment 14. The first segment 12 and the second segment 14 are attached end-to-end to each other to surround and define a central space 16 for receiving the pipe element. Figure 2 As shown, the connector 10 may include a first arcuate protrusion 17 and a second arcuate protrusion 19, also referred to as a "key," positioned on opposite sides of segments 12, 14. The arcuate protrusions 17, 19 are configured to engage with circumferential grooves at the ends of the tubular elements connected by the connector 10. The arcuate protrusions 17, 19 face the central space 16 and are capable of engaging within the circumferential grooves in the tubular elements when the segments are pulled together to connect the tubular elements. Figure 5 and Figure 6 As shown, the connector 10 may further include a seal 18 positioned within the central space 16. The seal 18 may be an annular gasket made of an elastomer such as EPDM. The seal 18 may support the segments 12, 14 in a spaced relationship sufficient to allow the tubular element to be inserted into the central space 16 without disassembling the connector 10. Figure 5 and Figure 6 As shown, the seal 18 may include a central leg 102, which includes a plurality of protrusions 104. The protrusions 104 may be rounded. Alternatively, as... Figure 13 As shown, the center leg 102 may include a portion 106, the portion 106 including an edge that is radially spaced from the center of the center space 16 by a smaller radial distance than the radial distance between the remaining edges of the center leg 102. Optionally, the portion 106 may have a linear or substantially linear edge. Tube elements may be inserted into the center space 16 to the extent that they contact the center leg 102 of the seal 18, which acts as a tube stop. When the ends of the tube elements contact the center leg 102, each arcuate protrusion 17, 19 may be aligned with a corresponding circumferential groove in each tube element. Advantageously, the seal 18 with the center leg 102 having protrusions 104 or portions 106 can be used to assemble the connector 10 and tube elements having straight or beveled ends. The connector according to the invention may also be used with flat-end tubes, shouldered tubes, or other shaped tube ends known in the art.

[0053] like Figure 1As further shown, each segment 12, 14 includes a first lug 22 extending from its first end 20. A first adjustable fastener 24 extends between the first lugs 22 along a first longitudinal axis 26. The first lug 22 may define a first opening 28 surrounding a first axis 29 oriented perpendicular to the first longitudinal axis 26 of the first adjustable fastener 24. The first opening 28 may extend through the first lug 22. The bending stiffness of the first lug 22 can be adjusted to a desired value by properly sizing the first opening 28. A second lug 32 extends from the second end 30 of each segment 12, 14. A second adjustable fastener 34 extends between the second lugs 32 along a second longitudinal axis 36. The second lug 32 may define a second opening 38 surrounding a second axis 39 oriented perpendicular to the second longitudinal axis 36 of the second adjustable fastener 34. The second opening 38 may extend through the second lug 32. The bending stiffness of the second lug 32 may be adjusted to a desired value by properly sizing the second opening 31. Preferably, the first lug 22 and the second lug 32 are adjusted to have the same bending stiffness. For example... Figure 6 As shown, each fastener 24, 34 may include a nut 25 and a bolt 35. Adjustable fasteners 24, 34 may be tightened to pull segments 12, 14 together.

[0054] like Figure 1 and Figure 3 As shown, each segment 12, 14 further includes a first inner surface 40 positioned between the central space 16 and the first lug 22. Figure 2 and Figure 3As shown, the first inner surface 40 may include a first tooth 42. The first tooth 42 has a first tooth surface 44. The first inner surface 40 may include a first recess 46. The first recess 46 has a first recess surface 48. The first tooth 42 of the first segment 12 is aligned with and configured to engage with the first recess 46 of the second segment 14. The first recess 46 of the first segment 12 is aligned with and configured to engage with the first tooth 42 of the second segment 14. The first tooth surface 44 may be oriented at a first angle 43 relative to a first plane 87. The first plane 87 includes a transverse axis 85 and a first axis 29 and a second axis 39. The transverse axis 85 may be oriented perpendicular to the first longitudinal axis 26 and the second longitudinal axis 36, as well as the first axis 29 and the second axis 39. The first recess surface 48 may be oriented at a second angle 45 relative to the first plane 87. The second angle 45 may have a slope opposite to the first angle 43 (signs opposite). The value of the second angle 45 may be the same as or substantially the same as the value of the first angle 43 (e.g., within the range of 5° to 10°). The slope of the first angle 43 may be in the range of 10° to 70°. The slope of the first angle 43 may preferably be in the range of 20° to 25°. The slope of the second angle 45 may be in the range of 10° to 70°. The slope of the second angle 45 may be in the range of 20° to 25°.

[0055] like Figure 1 and Figure 3 As shown, each segment 12, 14 includes a second inner surface 60 positioned between the central space 16 and the second lug 32. Figure 2 and Figure 3As shown, the second inner surface 60 may include a second tooth 62. The second tooth 62 has a second tooth surface 64. The second inner surface 60 may include a second recess 66. The second recess 66 has a second recess surface 68. The second tooth 62 of the first segment 12 is aligned with and configured to engage with the second recess 66 of the second segment 14. The second recess 66 of the first segment 12 is aligned with and configured to engage with the second tooth 62 of the second segment 14. The second tooth surface 64 may be oriented at a third angle 63 relative to the first plane 87. The second recess surface 68 may be oriented at a fourth angle 65 relative to the first plane 87. The third angle 63 has a slope opposite to the first angle 43 (opposite sign). It may be advantageous for the third angle 63 to have a slope equal to (in magnitude) or substantially equal to (e.g., within 5° to 10°) the slope of the first angle 43. The fourth angle 65 has a slope opposite to the second angle 45 (opposite sign). It is advantageous for the fourth angle 65 to have a slope equal to (in magnitude) or substantially equal to (e.g., within 5° to 10°) the slope of the second angle 45. Advantageously, the vertical or substantially vertical walls adjacent to the teeth 42, 62 and the recesses 46, 66 can help align segments 12, 14 when they are pulled together while the adjustable fasteners 24, 34 are tightened. Furthermore, the vertical or substantially vertical walls adjacent to the teeth 42, 62 and the recesses 46, 66 can help prevent rotation of segments 12, 14 after they have been pulled together.

[0056] like Figure 2 As shown, the connector 10 may further include a first pair of shoulders 41 positioned adjacent to the first tooth 42 and the first recess 46. Each first shoulder 41 has a first shoulder surface 47. The connector 10 may include a second pair of shoulders 61 positioned adjacent to the second tooth 62 and the second recess 66. Each second shoulder 61 has a second shoulder surface 67. The first shoulder surface 47 may be oriented substantially parallel (e.g., within a parallel range of 5° to 10°) or parallel to the first plane 87. The second shoulder surface 67 may be oriented substantially parallel (e.g., within a parallel range of 5° to 10°) or parallel to the first plane 87.

[0057] like Figure 1 As shown, each segment 12, 14 further includes a first stop surface 50 positioned on the first lug 22. The first stop surface 50 may be spaced apart from the first inner surface 40, wherein the first opening 28 and the first adjustable fastener 24 are positioned between the first stop surface 50 and the first inner surface 40. Figures 4 to 4GAs shown, the geometry of the first stop surface 50 of the first segment 12 may be complementary to the geometry of the first stop surface 50 of the second segment 14. For example, when the first stop surface 50 of the first segment 12 defines a receiving space, the first stop surface 50 of the second segment 14 may be shaped to insert into the receiving space when the first and second segments engage to interlock the first stop surface 50, as further described herein. Similarly, as another example, when the first stop surface 50 of the second segment 14 defines a receiving space, the first stop surface 50 of the first segment 12 may be shaped to insert into the receiving space when the first and second segments engage to interlock the first stop surface 50, as further described herein. Figure 2 and Figures 4 to 4C As shown, the first stop surface 50 may include a first portion 52 oriented at a fifth angle 54 relative to the second plane 88. The second plane 88 includes a first longitudinal axis 26, a second longitudinal axis 36, and a transverse axis 85. The first stop surface 50 may include at least one second portion 56 oriented at a seventh angle 58 relative to the second plane 88. The seventh angle 58 may have a slope opposite (indicated by the sign) to the fifth angle 54. The fifth angle 54 and the seventh angle 58 may each be between 35° and 70°. Optionally, the first stop surface 50 may include two second portions 56a, 56b. The first portion 52 may be positioned between the second portions 56a, 56b. Figures 4 to 4C As shown, the first segment 52 and the second segment 56a can form a peak 53, and the first segment and another second segment 56b can form a valley 57. The peak 53 of the first segment 12 can be complementary to the valley 57 of the second segment 15, and the peak 53 of the second segment 14 can be complementary to the valley 57 of the first segment 12. Optionally, as Figure 4 and Figure 4A As shown, the first portion 52 and the second portion 56a can form a convex curve, and the first portion and the other second portion 56b can form a concave curve. The convex curve of the first segment 12 can be complementary to the concave curve of the second segment 14, and the convex curve of the second segment 14 can be complementary to the concave curve of the first segment 12. Optionally, as Figure 4F and Figure 4GAs shown, the stop surface 50 includes a first portion 51 and a second portion 55 oriented parallel to or substantially parallel to (between 0° and 5°) a first axis 29. A third portion 59, oriented parallel to or substantially parallel to (between 0° and 5°) a longitudinal axis 26, is positioned between the first portion 51 and the second portion 55 (optionally extending between the first portion 51 and the second portion 55) such that the second portion 55 is recessed relative to the first portion 51. The first portion 51 of the first segment 12 may be complementary to the second portion 55 of the second segment 14, and the first portion 51 of the second segment 14 may be complementary to the second portion 55 of the first segment 12. As shown, the first portion 51 of the stop surface 50 may be defined by a structure projecting away from the second portion 55. The second portion 55 and the third portion 59 of the stop surface 50 may at least partially define a receiving space configured to complementaryly receive the structure defining the first portion 51 of the stop surface.

[0058] like Figure 1 As shown, each segment 12, 14 further includes a second stop surface 70 positioned on the second lug 32. The second stop surface 70 may be spaced apart from the second inner surface 60, wherein the second opening 38 and the second adjustable fastener 34 are positioned between the second stop surface 70 and the second inner surface 60. Figures 4 to 4E As shown, the geometry of the second stop surface 70 of the first segment 12 may be complementary to the geometry of the second stop surface 70 of the second segment 14. For example, when the second stop surface 70 of the first segment 12 defines a receiving space, the second stop surface 70 of the second segment 14 may be shaped to insert into the receiving space when the first and second segments engage to interlock the second stop surface 70, as further described herein. Similarly, as another example, when the second stop surface 70 of the second segment 14 defines a receiving space, the second stop surface 70 of the first segment 12 may be shaped to insert into the receiving space when the first and second segments engage to interlock the second stop surface 70, as further described herein. Figure 2 and Figures 4 to 4CAs shown, the second stop surface 70 may include a first portion 72 oriented at a sixth angle 74 relative to the second plane 88. The sixth angle 74 may have a slope that is equal (in magnitude) or substantially equal (e.g., within 5° to 10°) and opposite (in sign) to the fifth angle 54. The second stop surface 70 may include at least one second portion 76 oriented at an eighth angle 78 relative to the second plane 88. The eighth angle 78 may have a slope that is equal (in magnitude) or substantially equal (e.g., within 5° to 10°) and opposite (in sign) to the seventh angle 58. The eighth angle 78 may have a slope opposite to the sixth angle 74. The sixth angle 74 and the eighth angle 78 may each be between 35° and 70°. Optionally, the second stop surface 70 may include two second portions 76a, 76b. Figures 4 to 4C As shown, the first portion 72 can be positioned between the second portions 76a and 76b. The first portion 72 and the second portion 76a can form a peak 73, and the first portion and the other second portion 76b can form a valley 77. The peak 73 of the first segment 12 can be complementary to the valley 77 of the second segment 15, and the peak 73 of the second segment 14 can be complementary to the valley 77 of the first segment 12. Optionally, as Figure 4 and Figure 4A As shown, the first portion 72 and the second portion 76a can form a convex curve, and the first portion 72 and the other second portion 76b can form a concave curve. The convex curve of the first segment 12 can be complementary to the concave curve of the second segment 14, and the convex curve of the second segment 14 can be complementary to the concave curve of the first segment 12. Optionally, as Figure 4F and Figure 4G As shown, the stop surface 70 includes a first portion 71 and a second portion 75 oriented parallel to or substantially parallel to (between 0° and 5°) a second axis 39. A third portion 79, oriented parallel to or substantially parallel to (between 0° and 5°) a longitudinal axis 26, is positioned between the first portion 71 and the second portion 75 (optionally extending between the first portion 71 and the second portion 75) such that the second portion 75 is recessed relative to the first portion 71. The first portion 71 of the first segment 12 may be complementary to the second portion 75 of the second segment 14, and the first portion 71 of the second segment 14 may be complementary to the second portion 75 of the first segment 12. As shown, the first portion 71 of the stop surface 70 may be defined by a structure projecting away from the second portion 75. The second portion 75 and the third portion 79 of the stop surface 70 may at least partially define a receiving space configured to complementaryly receive the structure defining the first portion 71 of the stop surface.

[0059] The operation of connector 10 is described with reference to the accompanying drawings. Figure 5 and Figure 6An example connector 10 in a factory-assembled configuration is shown, wherein segments 12 and 14 are supported on a seal 18 in a spaced-apart relationship, the distance between them sufficient to allow a tubular element (not shown) to be inserted into a central space 16. In this factory-assembled example, fasteners 24 and 34 have been sufficiently tightened to hold the segments against the seal 18. The tubular element is inserted into the central space 16, and the circumferential grooves of the tubular element align with the arcuate protrusions 17, 19 on segments 12 and 14. Fasteners 24 and 34 are then further tightened to pull segments 12 and 14 toward each other. As fasteners 24 and 34 are being adjusted to pull segments 12 and 14 toward each other, the arcuate protrusions 17, 19 engage with the circumferential grooves of the tubular element. When fasteners 24 and 34 are tightened, segments 12 and 14 are aligned relative to axes 26 and 36 as segments 12 and 14 are pulled toward each other. Teeth 42, 62 and recesses 46, 66 further ensure that segments 12 and 14 are aligned when pulled together. Regarding Figure 4 and Figure 4 a, when segments 12 and 14 separate from the position ( Figure 4 (As shown in the image) pulled towards each other into a tightened state ( Figure 4 When (as shown in a), the stop surfaces 50, 70 and their corresponding portions 52, 56, 72, 76 move axially along the longitudinal axes 26, 36 of the fastener. When segments 12, 14 move from the separated position (as shown in a diagram), Figure 4 (As shown in the image) pulled towards each other into a tight state ( Figure 4 When (as shown in a), segments 12 and 14 may not rotate relative to each other about axis 11 or may rotate only slightly (e.g., at most 5°), thereby minimizing or eliminating displacement between stop surfaces 50 and 70 and their corresponding portions 52, 56, 72, 76. Axis 11 is parallel to longitudinal axes 26 and 36 and centered between longitudinal axes 26 and 36. Figure 4 and Figure 4EAs shown, when the first and second segments are pulled toward each other to a tightened state, complementary portions of the first stop surface 50 remain aligned (relative to their relative positions about axis 11), and complementary portions of the second stop surface 70 remain aligned (relative to their relative positions about axis 11). For example, when the first segment 12 and the second segment 14 are pulled toward each other to a tightened state, the corresponding peaks 53 and valleys 57 of the first stop surface 50 remain aligned, and the corresponding peaks 73 and valleys 77 of the second stop surface 70 remain aligned. The geometry of the first stop surface 50, including the first portion 52 and the second portion 56, allows the first segment 12 and the second segment 14 to remain unrotated or only slightly rotated relative to each other about axis 11 due to the engagement between the first stop surfaces 50 of the first segment 12 and the second segment 14. The geometry of the second stop surface 70, including the first portion 72 and the second portion 76, allows the first segment 12 and the second segment 14 to remain stationary or rotate only slightly relative to each other about the axis 11 due to the engagement between the second stop surfaces 70. Minimizing the displacement between the first segment 12 and the second segment 14 about the axis 11 reduces or eliminates any deformation of the seal 18 that could otherwise be caused by segments designed to rotate relative to each other. Although Figure 4 and Figure 4E The connector 10 without seal 18 is shown, but it is understood that the positions and configurations of segments 12, 14 in the factory-assembled configuration and the tightened state including seal 18 correspond to... Figure 4 and Figure 4E The positions and structures of segments 12 and 14 shown are illustrated.

[0060] The contact between connector 10 and the pipe element to which it can be connected creates a joint with greater stiffness or rigidity. Because connector 10 relies on the contact between the connector and the pipe element, it can be affected by a wide range of tolerances on the pipe surface and on the mating surface of the connector. Tolerances for groove depth, groove width, and groove location in the pipe element are known to those skilled in the art and are coded by standards for grooves to facilitate product interoperability, and may include AWWA Standard C-606 for grooved and shouldered joints, which is hereby incorporated herein by reference in its entirety. Tolerances for the diameter of the arcuate surface of the connector segment, as measured from the center of the respective segment (corresponding to the diameter of the best-fit curve of the arcuate surface), are known to those skilled in the art (the known range in the art is approximately + / - 0.040). Those skilled in the art will understand that the arcuate surface of the segment may be imperfect.

[0061] The connector 10 is designed to produce a relatively rigid joint due to strong contact between the arcuate surface of the segment and the bottom of the groove between the segment and the tube element within a wide tolerance range of the groove diameter (such as the range of groove diameters falling within, for example, the tolerances established by AWWA standard C-606 for slotted and shouldered joints) and a wide tolerance range of the arcuate surface diameter of the segment, such as the diameter of the arcuate surface of the segment measured from the center of the respective segment (corresponding to the diameter of the best-fit curve of the arcuate surface), while still allowing visual indication that a proper joint has been formed. Figure 7 and Figure 10 The segments 12 and 14 are shown in an assembled or tightened state after the adjustable fasteners 24 and 34 have been tightened at different points within the tolerance range of the circumferential groove in the tube element and the arcuate surface of the connector segment (i.e., between the first end with the largest tube diameter and the smallest arcuate surface diameter and the second end with the smallest tube diameter and the largest arcuate surface diameter). Figure 7 and Figure 10 The construction diagrams described herein illustrate certain tolerance conditions, and the full range of tolerance conditions encountered in field applications is envisioned within the scope of the disclosed connectors and joints, including those intermediate tolerance conditions specifically illustrated or described herein. When the first adjustable fastener 24 and the second adjustable fastener 34 are adjusted to pull the first segment 12 and the second segment 14 toward each other to a tightened state, the first stop surfaces 50 of segments 12, 14 engage and the second stop surfaces 70 of segments 12, 14 engage. At a certain point, the engagement between the arcuate protrusions 17, 19 and the circumferential groove of the tubular element prevents segments 12, 14 from pulling toward each other. At this point, the first lug 22 and the second lug 32 can be bent toward each other respectively until the corresponding stop surfaces 50, 70 engage (see [link to documentation]). Figure 9 and Figure 12 The stop surfaces 50 and 70 (including their geometry, length, position on the segments, and orientation angle) mitigate rotation relative to each other caused by friction between the torsional fasteners and their respective lugs during engagement of segments 12 and 14, and prevent rotation relative to each other once segments 12 and 14 are pulled together. The engagement between the stop surfaces 50 and / or between the stop surfaces 70 also serves as a final visual confirmation that the connector 10 has been properly installed. The stop surfaces 50 and 70 provide this visual confirmation across the entire tolerance range (from the lower end to the higher end of the tolerance range) of the circumferential grooves applied in the tubular element. Therefore, regardless of where the circumferential grooves in the tubular element fall on the tolerance spectrum, the technician only needs to tighten the fasteners 24 and 34 until the stop surfaces 50 and 70 engage. This engagement provides the final visual confirmation that the connector 10 has been properly installed.

[0062] like Figures 7 to 9 As shown, in the tightened state under the first tolerance, after the first stop surface 50 is engaged, a first gap 80 may exist between the first inner surfaces 40 (see...). Figure 9 The first tolerance is not at the higher end of the groove diameter tolerance range. After the second stop surface 70 engages, a second gap 90 may exist between the second inner surfaces 60 (see...). Figure 8 The first gap 80 and the second gap 90 extend across the entire first inner surface 40 and the second inner surface 60 (moving along axes 29, 39), including aligned teeth 42, 62 and recesses 46, 66, and adjacent shoulders 41, 61. The position of the shoulders 41, 61 relative to the teeth 42, 62 and recesses 46, 66 may leave a larger gap between the shoulders 41, 61 than at the aligned teeth 42, 62 and recesses 46, 66.

[0063] like Figures 10 to 12 As shown, in the tightened state under the second tolerance, when the stop surfaces 50 and 70 are engaged, at least a portion of the first inner surface 40 and / or the second inner surface 60 can contact each other, and this second tolerance can be at or near the higher end of the groove diameter tolerance range. Figure 11 and Figure 12 As shown, the surfaces of the aligned teeth 42, 62 and recesses 46, 66 can contact each other. Gap 81, 91 can be maintained between the corresponding shoulders 41, 61. Gap 81, 91 between the corresponding shoulders 41, 61 ensures sufficient contact between the arcuate protrusions 17, 19 of segments 12, 14 and the bottom of the circumferential groove of the tubular element.

[0064] Under tight conditions across the entire tolerance range, the aligned teeth 42, 62 and recesses 44, 66 provide structural support to the seal 18. The aligned teeth 42, 62 and recesses 46, 66 (including the geometry of the tooth surfaces 44, 64 and the recess surfaces 48, 68, their dimensions, their position on the segment, and their orientation angles) conceal and / or protect the seal 18, and prevent the seal 18 from protruding into and being squeezed through gaps 80, 90 when gaps are formed, thereby preventing the formation of leakage paths. By concealing the seal 18, the aligned teeth 42, 62 and recesses 46, 66 prevent installers from mistakenly concluding that the connector 10 is improperly installed because the seal is visible. Furthermore, the aligned shoulders 41 and 61 conceal and / or protect the seal 18, and prevent the seal 18 from protruding into and being squeezed through the gaps 80, 81, 90, and 91, thereby preventing the formation of a leakage path. The gaps 80, 81, 90, and 91 also ensure alignment and contact between the stop surfaces 50 and between the stop surfaces 70, thereby achieving a rigid coupling.

[0065] Figure 14 The illustration shows another example embodiment of the connector 110 according to the invention. The connector 110 shares many features of the connector embodiment 10 described above, but includes three segments 12, 13, 14 that are attached end-to-end to each other to surround and define a central space 16 for receiving a tubular element. The third segment 13 includes the same or substantially the same features as the first segment 12 and the second segment 14. Although the connector 110 has three segments 12, 13, 14, more than three segments are also possible. For example, the connector may include four segments that are attached end-to-end to each other to surround and define a central space.

[0066] Figure 15 The illustration shows another example embodiment of the connector 210 according to the invention. The connector 210 shares many features of the connector embodiment 10 described above, but replaces the second lug 32 with a hinge. The second ends 30 of each segment 12 and 14, arranged opposite to the first end 20, are connected to a hinge 120 that connects the first and second segments to each other. The hinge 120 defines a hinge axis 122 oriented transversely to the longitudinal axis 26 of the first fastener 24. The first segment 12 and the second segment 14 are pivotable about the hinge axis 122. Adjusting the first fastener 24 pivots the first segment 12 and the second segment 14 and thereby pulls them toward each other, and as... Figure 9 or Figure 12 As shown, depending on the tolerance range, the engagement between the first stop surfaces 50 on the first lug 26 prevents the segments from rotating relative to each other. In this example embodiment, the cantilever arms 124, 126 of the hinge 120 engage with each other at fulcrum 128. The cantilever arms 124, 126 are connected by a ring 130, which is held by projecting heads 132, 134 on each cantilever. Other forms of hinge joints (such as saddle and stirrup hinges, pin hinges, cast hinges, etc.) are also possible.

[0067] The present invention also includes a method for mounting a connector 10 as described herein for connecting pipe elements in an end-to-end relationship. In an example embodiment, the method includes: With the connector in its factory-assembled configuration, the first adjustable fastener 24 is adjusted to pull the first segment 12 and the second segment 14 toward each other. The first stop surface 50 at the first end 20 of segments 12 and 14 engages; Adjust the second adjustable fastener 34 to pull the first segment 12 and the second segment 14 toward each other; and The second stop surface 70 of the second end 30 of segments 12 and 14 is engaged.

[0068] Optionally, the first stop surface 50 at the first end 20 of segments 12, 14 is engaged before adjusting the second adjustable fastener 34.

[0069] After the second stop surface engages, the connector 10 is in a tightened state.

[0070] Optionally, the first segment 12 and the second segment 14 (relative to their positions around axis 11) are aligned and remain aligned in a tightened state.

[0071] It is anticipated that the connector according to the invention will be easily assembled to connect tubular elements together, while providing consistent and clear visual indication of proper installation and protecting and properly compressing the seals.

[0072] Exemplary aspects In view of the products, systems, and methods described and their variations, certain more specifically described aspects of the invention are described below. However, these specifically described aspects should not be construed as limiting any different claims that incorporate the different or more general teachings described herein, or as limiting the “specific” aspects in any way other than the inherent meaning of the language used literally therein.

[0073] Aspect 1: A connector for connecting pipe elements end-to-end, the connector comprising: The first segment and the second segment are attached end-to-end to each other to enclose a central space for receiving a tube element. Each segment includes a first lug extending from a first end of the segment and a second lug extending from a second end of the segment. A first adjustable fastener and a second adjustable fastener, the first adjustable fastener extending along a first longitudinal axis between first lugs, and the second adjustable fastener extending along a second longitudinal axis between second lugs; wherein Each segment further includes: A first inner surface is positioned between the central space and the first lug, and the first inner surface includes a first tooth and a first recess. A first stop surface is positioned on a first lug, and a first adjustable fastener is positioned between the first inner surface and the first stop surface. A second inner surface, positioned between the central space and the second lug, includes a second tooth and a second recess; and A second stop surface is positioned on a second lug, and a second adjustable fastener is positioned between a second inner surface and a second stop surface; wherein The first and second segments can move toward each other into a tightened state; The first adjustable fastener and the second adjustable fastener are configured to pull the first segment and the second segment toward each other to a tightened state; and wherein Under tight condition: The first stop surface at the first end of the segment engages, and the second stop surface at the second end of the segment engages; and The first tooth of the first segment is at least partially received within the first recess of the second segment, and the first tooth of the second segment is at least partially received within the first recess of the first segment.

[0074] Aspect 2: According to the connector of aspect 1, wherein, in the tightened state, the second tooth of the first segment engages with the second recess of the second segment, and the second recess of the first segment engages with the second tooth of the second segment.

[0075] Aspect 3: A connector according to any of the foregoing aspects, wherein, in the tightened state, there is a first gap between the first stop surfaces.

[0076] Aspect 4: According to the connector of aspect 3, in the tightened state, there is a second gap between the second inner surfaces.

[0077] Aspect 5: A connector according to any of the preceding aspects, wherein a first lug defines a first opening that surrounds a first axis oriented perpendicular to a first longitudinal axis of the first adjustable fastener and is positioned between a first inner surface and a first stop surface.

[0078] Aspect 6: According to the connector of aspect 5, wherein the first opening extends through the first lug.

[0079] Aspect 7: According to the connector of aspect 5, wherein the second lug defines a second opening that surrounds a second axis oriented perpendicular to the second longitudinal axis of the second adjustable fastener and is positioned between the second inner surface and the second stop surface.

[0080] Aspect 8: According to the connector of aspect 7, wherein the second opening extends through the second lug.

[0081] Aspect 9: A connector according to any of the preceding aspects, wherein: The first tooth of the first segment aligns with the first recess of the second segment, and The first concave part of the first segment aligns with the first tooth of the second segment.

[0082] Aspect 10: A connector according to any of the preceding aspects, wherein a first tooth surface is oriented at a first angle relative to a first plane, the first plane including a transverse axis and a first axis and a second axis, the transverse axis being perpendicular to the first longitudinal axis and the second longitudinal axis and the first axis and the second axis being oriented, and wherein a first recessed surface is oriented at a second angle relative to the first plane.

[0083] Aspect 11: According to the connector of aspect 10, the second angle has a slope opposite to that of the first angle.

[0084] Aspect 12: According to the connector of aspect 11, the magnitude of the second angle is substantially the same as the magnitude of the first angle.

[0085] Aspect 13: According to the connector of aspect 11, wherein the slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

[0086] Aspect 14: A connector according to any of the preceding aspects, wherein: The second tooth of the first segment aligns with the second recess of the second segment, and The second concave portion of the first segment aligns with the second tooth of the second segment.

[0087] Aspect 15: A connector according to any of the preceding aspects, wherein the second tooth surface is oriented at a third angle relative to the first plane, and the second recess surface is oriented at a fourth angle relative to the first plane.

[0088] Aspect 16: According to the connector of aspect 15, the third angle has a slope equal to and opposite to the first angle, and the fourth angle has a slope equal to and opposite to the second angle.

[0089] Aspect 17: The connector according to aspect 13 further includes: A first pair of shoulders, positioned adjacent to the first tooth and the first recess, each of the first pair of shoulders having a first shoulder surface; and The second pair of shoulders are positioned adjacent to the second tooth and the second recess, and each of the second pair of shoulders has a second shoulder surface.

[0090] Aspect 18: According to the connector of aspect 17, the first shoulder surface is oriented substantially parallel to the first plane, and the second shoulder surface is oriented substantially parallel to the first plane.

[0091] Aspect 19: A connector according to any of the preceding aspects, wherein the first stop surface includes a first portion oriented at a fifth angle relative to a second plane, the second plane including a first longitudinal axis and a second longitudinal axis and a transverse axis, wherein the second stop surface includes a first portion oriented at a sixth angle relative to the second plane.

[0092] Aspect 20: According to the connector of aspect 19, the sixth angle has a slope that is equal to but opposite to that of the fifth angle.

[0093] Aspect 21: According to the connector of aspect 20, wherein the first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane, and the second stop surface includes at least one second portion oriented at an eighth angle relative to the second plane.

[0094] Aspect 22: According to the connector of aspect 21, the eighth angle has a slope that is equal to but opposite to that of the seventh angle.

[0095] Aspect 23: According to the connector of aspect 21, the seventh angle has a slope opposite to that of the fifth angle, and the eighth angle has a slope opposite to that of the sixth angle.

[0096] Aspect 24: A connector according to any of the preceding aspects, wherein each of the first adjustable fastener and the second adjustable fastener comprises a nut and a bolt.

[0097] Aspect 25: A connector according to any of the preceding aspects, wherein each of the segments includes a first and a second arcuate protrusion positioned on opposite sides of the segment, each of the first and second arcuate protrusions facing a central space, and each of the first and second arcuate protrusions being capable of engaging within a circumferential groove in the tubular element when the segments are pulled toward each other by a first and a second adjustable fastener.

[0098] Aspect 26: The connector according to any of the foregoing aspects further includes a seal positioned within a central space, the seal supporting the spaced-apart segments in a manner sufficient to allow the tubular element to be inserted into the central space without disassembling the connector.

[0099] Aspect 27: A method of using a connector according to any of the foregoing aspects, the method comprising: Adjust the first adjustable fastener to pull the first segment and the second segment toward each other; The first stop surface at the first end of the segment engages; Adjust the second adjustable fastener to pull the first and second segments toward each other; and The second stop surface at the second end of the segment engages.

[0100] Aspect 28: According to the method of aspect 27, wherein the first stop surface at the first end of the segment engages before adjusting the second adjustable fastener.

[0101] Aspect 29: According to the method of aspect 28, the connector is in a tightened state after the second stop surface is engaged.

[0102] Aspect 30: According to the method of aspect 29, the first segment and the second segment are aligned with an axis parallel to the first longitudinal axis and the second longitudinal axis and centered between the first longitudinal axis and the second longitudinal axis, and remain aligned in the tightened state.

[0103] Aspect 31: A connector for connecting pipe elements end-to-end, the connector comprising: The first segment and the second segment are attached end-to-end to each other to enclose a central space for receiving a tubular element. Each segment includes a first end and a second end, and each segment includes a first lug extending from its first end. A first adjustable fastener extends along a first longitudinal axis between first lugs; and Hinge assembly, which is attached to the second end of the first segment and the second segment; wherein Each segment further includes: A first inner surface, positioned between the central space and the first lug, includes a first tooth and a first recess; and A first stop surface is positioned on a first lug, and a first adjustable fastener is positioned between the first inner surface and the first stop surface; wherein The first and second segments can move toward each other into a tightened state; The first adjustable fastener is configured to pull the first segment and the second segment toward each other into a tightened state; and wherein Under tight condition: The first stop surface at the first end of the segment engages, and The first tooth of the first segment is at least partially received within the first recess of the second segment, and the first tooth of the second segment is at least partially received within the first recess of the first segment.

[0104] Aspect 32: According to the connector of aspect 31, wherein, in the tightened state, there is a first gap between the first stop surfaces.

[0105] Aspect 33: A connector according to any of aspects 31 to 32, wherein a first lug defines a first opening that surrounds a first axis oriented perpendicular to a first longitudinal axis of the first adjustable fastener and is positioned between a first inner surface and a first stop surface.

[0106] Aspect 34: The connector according to aspect 33, wherein the first opening extends through the first lug.

[0107] Aspect 35: A connector according to any of aspects 31 to 34, wherein: The first tooth of the first segment aligns with the first recess of the second segment, and The first concave part of the first segment aligns with the first tooth of the second segment.

[0108] Aspect 36: A connector according to any of aspects 31 to 35, wherein a first tooth surface is oriented at a first angle relative to a first plane, the first plane including a transverse axis and a first axis and a second axis, the transverse axis being perpendicular to the first longitudinal axis and the second longitudinal axis and the first axis and the second axis being oriented, and wherein a first recessed surface is oriented at a second angle relative to the first plane.

[0109] Aspect 37: According to the connector of aspect 36, the second angle has a slope opposite to that of the first angle.

[0110] Aspect 38: According to the connector of aspect 37, the magnitude of the second angle is substantially the same as the magnitude of the first angle.

[0111] Aspect 39: According to the connector of aspect 37, the slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

[0112] Aspect 40: The connector according to any of aspects 31 to 39 further includes: The first pair of shoulders are positioned adjacent to the first tooth and the first recess, and each of the first pair of shoulders has a first shoulder surface.

[0113] Aspect 41: According to the connector of aspect 40, the first shoulder surface is oriented substantially parallel to the first plane.

[0114] Aspect 42: A connector according to any of aspects 31 to 41, wherein the first stop surface includes a first portion oriented at a fifth angle relative to a second plane, the second plane including a first longitudinal axis, a second longitudinal axis, and a transverse axis.

[0115] Aspect 43: The connector according to aspect 42, wherein the first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane.

[0116] Aspect 44: According to the connector of aspect 42, the seventh angle has a slope opposite to that of the fifth angle.

[0117] Aspect 45: A connector according to any of aspects 31 to 44, wherein the first adjustable fastener comprises a nut and a bolt.

[0118] Aspect 46: A connector according to any of aspects 31 to 45, wherein each of the segments includes a first and a second arcuate protrusion positioned on opposite sides of the segment, each of the first and second arcuate protrusions facing a central space, and each of the first and second arcuate protrusions being capable of engaging within a circumferential groove in the tubular element when the segments are pulled toward each other by a first adjustable fastener.

[0119] Aspect 47: The connector according to any of aspects 31 to 46 further includes a seal positioned within a central space, the seal being positioned such that it allows the tubular element to be inserted into the central space in a spaced-apart relationship supporting segment without disassembling the connector.

Claims

1. A connector for connecting pipe elements end-to-end, the connector comprising: The first segment and the second segment are attached end-to-end to each other to enclose a central space for receiving the tubular element. Each segment includes a first lug extending from a first end of the segment and a second lug extending from a second end of the segment. A first adjustable fastener and a second adjustable fastener, the first adjustable fastener extending along a first longitudinal axis between the first lugs, and the second adjustable fastener extending along a second longitudinal axis between the second lugs. in Each of the segments further includes: A first inner surface is positioned between the central space and the first lug, the first inner surface including a first tooth and a first recess; A first stop surface is positioned on the first lug, and the first adjustable fastener is positioned between the first inner surface and the first stop surface. A second inner surface, positioned between the central space and the second lug, the second inner surface including a second tooth and a second recess; and A second stop surface is positioned on the second lug, and a second adjustable fastener is positioned between the second inner surface and the second stop surface; wherein The first segment and the second segment can move toward each other into an tightened state; The first adjustable fastener and the second adjustable fastener are configured to pull the first segment and the second segment toward each other into the tightened state; and wherein In the tightened state: The first stop surface engages at the first end of the segment, and the second stop surface engages at the second end of the segment; and The first tooth of the first segment is at least partially received within the first recess of the second segment, and the first tooth of the second segment is at least partially received within the first recess of the first segment.

2. The connector according to claim 1, wherein, In the tightened state, the second tooth of the first segment engages with the second recess of the second segment, and the second recess of the first segment engages with the second tooth of the second segment.

3. The connector according to claim 1, wherein, In the tightened state, there is a first gap between the first stop surface.

4. The connector according to claim 3, wherein, In the tightened state, a second gap exists between the second inner surfaces.

5. The connector according to claim 1, wherein, The first lug defines a first opening that surrounds a first axis oriented perpendicular to the first longitudinal axis of the first adjustable fastener and is positioned between the first inner surface and the first stop surface.

6. The connector according to claim 5, wherein, The first opening extends through the first lug.

7. The connector according to claim 5, wherein, The second lug defines a second opening that surrounds a second axis oriented perpendicular to the second longitudinal axis of the second adjustable fastener and is positioned between the second inner surface and the second stop surface.

8. The connector according to claim 7, wherein, The second opening extends through the second lug.

9. The connector according to claim 1, wherein: The first tooth of the first segment aligns with the first recess of the second segment, and The first recess of the first segment is aligned with the first tooth of the second segment.

10. The connector according to claim 1, wherein, The first tooth surface is oriented at a first angle relative to a first plane, the first plane including a transverse axis and the first axis and the second axis, the transverse axis being oriented perpendicular to the first longitudinal axis and the second longitudinal axis and the first axis and the second axis, and wherein the first recessed surface is oriented at a second angle relative to the first plane.

11. The connector according to claim 10, wherein, The second angle has a slope opposite to that of the first angle.

12. The connector according to claim 11, wherein, The value of the second angle is substantially the same as the value of the first angle.

13. The connector according to claim 11, wherein, The slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

14. The connector according to claim 1, wherein: The second tooth of the first segment aligns with the second recess of the second segment, and The second recess of the first segment is aligned with the second tooth of the second segment.

15. The connector according to claim 1, wherein, The second tooth surface is oriented at a third angle relative to the first plane, and the second recessed surface is oriented at a fourth angle relative to the first plane.

16. The connector according to claim 15, wherein, The third angle has a slope equal to but opposite to that of the first angle, and the fourth angle has a slope equal to but opposite to that of the second angle.

17. The connector of claim 13, further comprising: A first pair of shoulders, positioned adjacent to the first tooth and the first recess, each of the first pair of shoulders having a first shoulder surface; as well as The second pair of shoulders is positioned adjacent to the second tooth and the second recess, each of the second pair of shoulders having a second shoulder surface.

18. The connector according to claim 17, wherein, The first shoulder surface is oriented substantially parallel to the first plane, and the second shoulder surface is oriented substantially parallel to the first plane.

19. The connector according to claim 1, wherein, The first stop surface includes a first portion oriented at a fifth angle relative to a second plane, the second plane including the first longitudinal axis, the second longitudinal axis and the transverse axis, wherein the second stop surface includes a first portion oriented at a sixth angle relative to the second plane.

20. The connector according to claim 19, wherein, The sixth angle has a slope that is equal to but opposite to that of the fifth angle.

21. The connector according to claim 20, wherein, The first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane, and the second stop surface includes at least one second portion oriented at an eighth angle relative to the second plane.

22. The connector according to claim 21, wherein, The eighth angle has a slope that is equal to but opposite to that of the seventh angle.

23. The connector according to claim 21, wherein, The seventh angle has a slope opposite to that of the fifth angle, and the eighth angle has a slope opposite to that of the sixth angle.

24. The connector according to claim 1, wherein, Each of the first adjustable fastener and the second adjustable fastener includes a nut and a bolt.

25. The connector according to claim 1, wherein, Each of the segments includes a first and a second arcuate protrusion positioned on opposite sides of the segment, each of the first and second arcuate protrusions facing the central space, and each of the first and second arcuate protrusions being able to engage within a circumferential groove in the tubular element when the segments are pulled toward each other by the first and second adjustable fasteners.

26. The connector of claim 1, further comprising a seal positioned within the central space, the seal supporting the segment in a spaced relationship sufficient to allow the tubular element to be inserted into the central space without disassembling the connector.

27. A method of using the connector according to claim 1, the method comprising: Adjust the first adjustable fastener to pull the first segment and the second segment toward each other; Engage the first stop surface at the first end of the segment; Adjust the second adjustable fastener to pull the first segment and the second segment toward each other; as well as The second stop surface at the second end of the segment is engaged.

28. The method according to claim 27, wherein, Before adjusting the second adjustable fastener, the first stop surface at the first end of the segment engages.

29. The method according to claim 28, wherein, After the second stop surface engages, the connector is in the tightened state.

30. The method according to claim 29, wherein, The first segment and the second segment are aligned with an axis that is parallel to the first longitudinal axis and the second longitudinal axis and centered between the first longitudinal axis and the second longitudinal axis, and the alignment is maintained in the tightened state.

31. A connector for connecting pipe elements end-to-end, the connector comprising: A first segment and a second segment are attached end-to-end to each other to enclose a central space for receiving the tubular element. Each segment includes a first end and a second end, and each segment includes a first lug extending from its first end. A first adjustable fastener extends along a first longitudinal axis between the first lugs; as well as A hinge assembly that is attached to the second end of the first segment and the second segment; in Each of the segments further includes: A first inner surface, positioned between the central space and the first lug, the first inner surface including a first tooth and a first recess; and A first stop surface is positioned on the first lug, and a first adjustable fastener is positioned between the first inner surface and the first stop surface; wherein The first segment and the second segment can move toward each other into an tightened state; The first adjustable fastener is configured to pull the first segment and the second segment toward each other into the tightened state; and wherein In the tightened state: The first stop surface engages at the first end of the segment, and The first tooth of the first segment is at least partially received within the first recess of the second segment, and the first tooth of the second segment is at least partially received within the first recess of the first segment.

32. The connector according to claim 31, wherein, In the tightened state, there is a first gap between the first stop surface.

33. The connector according to claim 31, wherein, The first lug defines a first opening that surrounds a first axis oriented perpendicular to the first longitudinal axis of the first adjustable fastener and is positioned between the first inner surface and the first stop surface.

34. The connector according to claim 33, wherein, The first opening extends through the first lug.

35. The connector according to claim 31, wherein: The first tooth of the first segment aligns with the first recess of the second segment, and The first recess of the first segment is aligned with the first tooth of the second segment.

36. The connector according to claim 31, wherein, The first tooth surface is oriented at a first angle relative to a first plane, the first plane including a transverse axis and the first axis and the second axis, the transverse axis being oriented perpendicular to the first longitudinal axis and the second longitudinal axis and the first axis and the second axis, and wherein the first recessed surface is oriented at a second angle relative to the first plane.

37. The connector according to claim 36, wherein, The second angle has a slope opposite to that of the first angle.

38. The connector according to claim 37, wherein, The value of the second angle is substantially the same as the value of the first angle.

39. The connector according to claim 37, wherein, The slope of the first angle is in the range of 10° to 70°, and the slope of the second angle is in the range of 10° to 70°.

40. The connector of claim 31, further comprising: The first pair of shoulders are positioned adjacent to the first tooth and the first recess, each of the first pair of shoulders having a first shoulder surface.

41. The connector according to claim 40, wherein, The first shoulder surface is oriented substantially parallel to the first plane.

42. The connector according to claim 31, wherein, The first stop surface includes a first portion oriented at a fifth angle relative to a second plane, the second plane including the first longitudinal axis, the second longitudinal axis, and the transverse axis.

43. The connector according to claim 42, wherein, The first stop surface further includes at least one second portion oriented at a seventh angle relative to the second plane.

44. The connector according to claim 42, wherein, The seventh angle has a slope opposite to that of the fifth angle.

45. The connector according to claim 31, wherein, The first adjustable fastener includes a nut and a bolt.

46. ​​The connector according to claim 31, wherein, Each of the segments includes a first and a second arcuate protrusion positioned on opposite sides of the segment, each of the first and second arcuate protrusions facing the central space, and each of the first and second arcuate protrusions being able to engage within a circumferential groove in the tubular element when the segments are pulled toward each other by the first adjustable fastener.

47. The connector of claim 31, further comprising a seal positioned within the central space, the seal supporting the segment in a spaced relationship sufficient to allow the tubular element to be inserted into the central space without disassembling the connector.

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