Pipe assembly heat insulation and moisture prevention

Abstract

To provide a favorable pipe assembly insulation and vapor barrier.SOLUTION: An insulating cover for assemblies including pipe elements, pipe couplings, elbows, Tees and valves also acts as a vapor barrier. Cover portions are joined along a seam which provides a continuous seal between both the cover portions and the pipe elements, the seal extending through channels defined in the cover. The seam includes a furrow into which a sealant is forced when the cover portions are joined around the assembly. The furrow is defined by an asymmetric tongue and groove joint. Canals in the channels in communication with the grooves also receive the sealant to provide the continuous seal.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] (Cross - Reference to Related Applications) This application claims priority to and the benefit of U.S. Provisional Application No. 62 / 811,818, filed on Feb. 28, 2019, the entire disclosure of which is incorporated herein by reference.

[0002] (Field of the Invention) The present invention relates to insulation for assemblies of pipe elements.

Background Art

[0003] (Background) Covering a pipe network to help insulate the pipe network against heat loss and conserve energy and to provide moisture protection when the pipes carry cold water is advantageous. Moisture protection prevents condensate from forming on the cold water pipes and reduces or even prevents corrosion of the pipe elements.

[0004] Providing insulation for a straight pipe run is relatively simple (when the pipes are standardly controlled), while creating insulation for complex pipe assemblies such as mechanical couplings, valves, elbow fittings, and T - fittings is a more complex task. Such pipe arrangements tend not to be standardized and can have many different sizes, configurations, and types of assemblies. Incomplete insulation, particularly incomplete moisture protection, in assemblies where pipe elements are joined to each other or to fittings or components is a recognized industrial problem. If moisture protection is compromised at one location, cracks can damage the entire pipe system. There is clearly a need for an improved insulation cover that can provide effective moisture protection in assemblies where pipe elements are joined.

Summary of the Invention

Means for Solving the Problems

[0005] (Summary) The present invention relates to a cover that can be positioned to surround an assembly that combines pipe elements. In one example embodiment, the cover includes a first cover portion that defines a first recess for receiving the assembly. The first cover portion has a first sidewall that defines a first channel and a second sidewall that defines a second channel. The first channel and the second channel communicate with the first recess. The first channel and the second channel receive pipe elements. The second cover portion defines a second recess for receiving the assembly. The second cover portion has a third sidewall that defines a third channel and a fourth sidewall that defines a fourth channel. The third channel and the fourth channel communicate with the second recess. The third channel and the fourth channel also receive pipe elements. A first interface surface is positioned on the first cover portion. The first interface surface surrounds the first recess and the first and second channels. A second interface surface is positioned on the second cover portion. The second interface surface surrounds the second recess and the third and fourth channels. The second interface surface is engageable with the first interface surface to join the first cover portion and the second cover portion to each other so as to surround the assembly. A first canal is positioned within the first sidewall so as to transverse the first channel. A second canal is positioned within the second sidewall so as to transverse the second channel. A third canal is positioned within the third sidewall so as to transverse the third channel. A fourth canal is positioned within the fourth sidewall so as to transverse the fourth channel.

[0006] As an example, at least a first portion of the first interface comprises a groove extending therealong. At least a first portion of the second interface comprises a ridge extending therefrom. The ridge of the first portion of the second interface is received within the groove of the first portion of the first interface when the first cover portion and the second cover portion are joined to each other. In one example embodiment, the groove of the first portion of the first interface is in fluid communication with the first canal and the third canal when the first cover portion and the second cover portion are joined to each other. As a further example, at least a second portion of the first interface comprises a ridge extending therefrom. At least a second portion of the second interface comprises a groove extending therealong. The ridge of the second portion of the first interface is received within the groove of the second portion of the second interface when the first cover portion and the second cover portion are joined to each other. In one example embodiment, the groove of the second portion of the second interface is in fluid communication with the second canal and the fourth canal when the first cover portion and the second cover portion are joined to each other. As a further example, the groove within the first portion of the first interface is in fluid communication with the groove within the second portion of the second interface when the first cover portion and the second cover portion are joined to each other. Additionally as an example, the ridge of the first portion of the first interface comprises a surface that is angled and oriented with respect to the second interface, thereby defining a recess between the first cover portion and the second cover portion. In one example embodiment, the ridge of the second portion of the second interface comprises a surface that is angled and oriented with respect to the first interface, thereby defining a recess between the first cover portion and the second cover portion.

[0007] In another exemplary embodiment, the first interface surface comprises a first alignment notch and a second alignment notch. The second interface surface comprises a first alignment block and a second alignment block. The first alignment notch and the second alignment notch have a complementary shape with respect to the first alignment block and the second alignment block such that when the first cover portion and the second cover portion are joined to each other, the first alignment block and the second alignment block are interlocked with the first alignment notch and the second alignment notch. In a further example, the first interface surface comprises a third alignment block and a fourth alignment block. The second interface surface comprises a third alignment notch and a fourth alignment notch. The third alignment notch and the fourth alignment notch have a complementary shape with respect to the third alignment block and the fourth alignment block such that when the first cover portion and the second cover portion are joined to each other, the third alignment block and the fourth alignment block are interlocked with the third alignment notch and the fourth alignment notch. In a specific exemplary embodiment, the alignment blocks and the alignment notches are in a step shape.

[0008] One example embodiment further includes a seal positioned within the canal and within the recess. In this example, the seal completely surrounds the first recess and the second recess. One example may further include an opening within the first cover portion and the second cover portion. The opening is located along the first interface and the second interface. A fifth canal on the first interface extends along the opening, and a sixth canal extends along the second cover portion. The canals are in fluid communication with the recess and receive the seal. In one example embodiment, the seal is selected from the group consisting essentially of a continuous gasket, extruded cork, rope cork, and combinations thereof. As a further example, the first cover portion and the second cover portion include a foam layer. In a specific example embodiment, the foam layer has a thermal resistance of at least R = 5 per inch of thickness. In a further example, the foam layer includes polyisocyanurate. One example cover may further include a polyvinylidene chloride coating over the foam layer. As a further example, the cover includes an outer coating surrounding the foam layer. By way of example, the outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof. In a further example, the foam layer and the outer coating achieve a rating lower than 25 / 50 through the ASTM E84 test standard for flame spread and smoke.

[0009] The present invention further includes a cover that can be positioned to surround an assembly that joins a first pipe element and a second pipe element together. By way of example, the cover includes a first cover portion that defines a first recess for receiving the assembly. The first cover portion defines a first channel and a second channel for receiving the first pipe element. The first channel and the second channel communicate with the first recess. The second cover portion defines a second recess for receiving the assembly. The second cover portion defines a third channel and a fourth channel for receiving the second pipe element. The third channel and the fourth channel communicate with the second recess. The first cover portion and the second cover portion are joined to each other so as to surround the assembly and the pipe elements at the seam. The seam includes a depression that faces outwardly away from the first recess and the second recess.

[0010] In one example embodiment, the depression has an asymmetric cross-sectional shape. As a further example, a seal is positioned within the depression. One example embodiment further includes a first canal positioned within the first channel and in fluid communication with the depression. A second canal is positioned within the second channel and in fluid communication with the depression. A third canal is positioned within the third channel and in fluid communication with the depression. A fourth canal is positioned within the fourth channel and in fluid communication with the depression. In one specific example embodiment, each of the canals has an asymmetric cross-sectional shape. As a further example, each of the canals faces outwardly away from the first recess and the second recess.

[0011] One example embodiment further includes seals positioned within the canal and within the recess. In this example, the seals completely surround the first recess and the second recess. As a further example, the seals are selected from the group consisting essentially of continuous gaskets, extruded cork, rope cork, and combinations thereof. In one example embodiment, the first cover portion and the second cover portion include a foam layer. As a further example, the foam layer has a thermal resistance of at least R = 5 per inch of thickness. In one example embodiment, the foam layer includes polyisocyanurate. In one example embodiment, a polyvinylidene chloride coating is on the foam layer. One example cover embodiment may further include an outer coating surrounding the foam layer. As an example, the outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof. As a further example, the foam layer and the outer coating achieve a rating lower than 25 / 50 through the ASTM E84 test standard for flame spread and smoke.

[0012] One example cover embodiment further includes an opening within at least one of the cover portions. The opening is located along the seam and interrupts the recess. The canal extends along the opening. The canal is in fluid communication with the recess and receives the seal.

[0013] In one example embodiment, the first cover portion defines a first opening portion located along the seam. The second cover portion defines a second opening portion located along the seam. The first opening portion and the second opening portion are aligned to form an opening within the cover. The first canal surrounds the first opening portion and is in fluid communication with the recess. The second canal surrounds the second opening portion and is in fluid communication with the recess. In this example, the seal is received within the first canal and the second canal. As a further example, at least a portion of the seam is defined by a ridge extending from the first cover portion. The ridge is received within a groove positioned within the second cover portion. In one example embodiment, the recess is defined by a first surface over at least one of the first cover portion and the second cover portion, and the first surface is angled and directed with respect to a second surface over the other of the first cover portion and the second cover portion. The first surface and the second surface are in a facing relationship. In one example embodiment, the first surface is positioned on the first cover portion proximate to the ridge. As a further example, the first channel and the third channel surround a first bore. The second channel and the fourth channel surround a second bore. In this example, the first bore and the second bore are aligned with each other.

[0014] The present invention also encompasses a cover in combination with an assembly including a first pipe element and a second pipe element. In one example embodiment, the assembly comprises a coupling that joins the pipe elements in an end-to-end relationship. In one example embodiment of the assembly and in combination with the first pipe element and the second pipe element, the assembly comprises a valve. The first pipe coupling attaches the first pipe element to the valve. The second pipe coupling attaches the second pipe element to the valve.

[0015] In another exemplary embodiment, the first channel and the third channel surround the first bore. The second channel and the fourth channel surround the second bore. In this example, the first bore and the second bore are not aligned with each other.

[0016] In an example combination of an assembly including a first pipe element and a second pipe element and a cover, the assembly comprises an elbow fitting. A first coupling joins the first pipe element to the elbow fitting. A second coupling joins the second pipe element to the elbow fitting.

[0017] An exemplary cover according to the present invention is used to further join a first pipe element and a second pipe element to a third pipe element. In an exemplary embodiment, a first cover portion defines a fifth channel for receiving the third pipe element. The fifth channel communicates with a first recess. A second cover portion defines a sixth channel for receiving the third pipe element. The sixth channel communicates with a second recess. In this example, the fifth channel and the sixth channel surround a third bore. The third bore is not aligned with the first bore and the second bore.

[0018] Another exemplary combination comprises a T-fitting. A first coupling joins the first pipe element to the T-fitting. A second coupling joins the second pipe element to the T-fitting. In an exemplary embodiment of the present invention, a third coupling joins a third pipe element to the T-fitting.

[0019] This specification also provides, for example, the following items. (Item 1) A cover positionable to surround an assembly joining pipe elements, the cover comprising A first cover portion defining a first recess for receiving the assembly, the first cover portion having a first sidewall defining a first channel and a second sidewall defining a second channel, the first channel and the second channel communicating with the first recess, the first channel and the second channel being for receiving the pipe element, the first cover portion, A second cover portion defining a second recess for receiving the assembly, the second cover portion having a third sidewall defining a third channel and a fourth sidewall defining a fourth channel, the third channel and the fourth channel communicating with the second recess, the third channel and the fourth channel being for receiving the pipe element, the second cover portion, A first interface surface positioned on the first cover portion, the first interface surface surrounding the first recess and the first channel and the second channel, the first interface surface, A second interface surface positioned on the second cover portion, the second interface surface surrounding the second recess and the third channel and the fourth channel, the second interface surface being engageable with the first interface surface for joining the first cover portion and the second cover portion to each other so as to surround the assembly, the second interface surface, A first canal positioned within the first sidewall so as to transverse the first channel, A second canal positioned within the second sidewall so as to transverse the second channel, A third canal positioned within the third sidewall so as to transverse the third channel, A fourth canal positioned within the fourth sidewall so as to transverse the fourth channel A cover comprising. (Item 2) At least a first portion of the first interface surface comprises a groove extending along it, At least a first portion of the second interface surface is provided with a ridge extending therefrom, and the ridge of the first portion of the second interface surface is received in the groove of the first portion of the first interface surface when the first cover portion and the second cover portion are joined to each other. The cover according to item 1. (Item 3) The groove of the first portion of the first interface surface is in fluid communication with the first canal and the third canal when the first cover portion and the second cover portion are joined to each other. The cover according to item 2. (Item 4) At least a second portion of the first interface surface is provided with a ridge extending therefrom. At least a second portion of the second interface surface is provided with a groove extending along it, and the ridge of the second portion of the first interface surface is received in the groove of the second portion of the second interface surface when the first cover portion and the second cover portion are joined to each other. The cover according to item 2. (Item 5) The groove of the second portion of the second interface surface is in fluid communication with the second canal and the fourth canal when the first cover portion and the second cover portion are joined to each other. The cover according to item 4. (Item 6) The groove in the first portion of the first interface surface is in fluid communication with the groove in the second portion of the second interface surface when the first cover portion and the second cover portion are engaged with each other. The cover according to item 4. (Item 7) The ridge of the first portion of the first interface surface is provided with a surface, and the surface is angled and directed with respect to the second interface surface, thereby defining a depression between the first cover portion and the second cover portion. The cover according to item 2. (Item 8) The protrusion of the second portion of the second boundary surface has a surface that is angled and oriented with respect to the first boundary surface, thereby defining a recess between the first cover portion and the second cover portion. The cover according to item 3. (Item 9) The first boundary surface includes a first alignment notch and a second alignment notch. The second boundary surface includes a first alignment block and a second alignment block. The first alignment notch and the second alignment notch have a complementary shape with respect to the first alignment block and the second alignment block such that when the first cover portion and the second cover portion are joined together, the first alignment block and the second alignment block interlock with the first alignment notch and the second alignment notch. The cover according to item 1. (Item 10) The first boundary surface includes a third alignment block and a fourth alignment block. The second boundary surface includes a third alignment notch and a fourth alignment notch. The third alignment notch and the fourth alignment notch have a complementary shape with respect to the third alignment block and the fourth alignment block such that when the first cover portion and the second cover portion are joined together, the third alignment block and the fourth alignment block interlock with the third alignment notch and the fourth alignment notch. The cover according to item 9. (Item 11) The alignment block and the alignment notch are in a stepped shape. The cover according to item 10. (Item 12) The cover according to item 7, further comprising a seal positioned within the canal and within the recess, the seal completely surrounding the first recess and the second recess. (Item 13) The cover according to item 12 further comprises openings in the first cover portion and the second cover portion, the openings being located along the first interface and the second interface, a fifth canal on the first cover portion extending along the opening, a sixth canal extending along the second cover portion, the canals being in fluid communication with the recess and receiving the seal. (Item 14) The cover according to item 12, wherein the seal is selected from the group consisting essentially of a continuous gasket, extruded cork, rope cork, and combinations thereof. (Item 15) The cover according to item 1, wherein the first cover portion and the second cover portion comprise a foam layer. (Item 16) The cover according to item 15, wherein the foam layer has a thermal insulation value of at least R = 5 per inch of thickness. (Item 17) The cover according to item 15, wherein the foam layer contains polyisocyanurate. (Item 18) The cover according to item 15, further comprising a polyvinylidene chloride coating on the foam layer. (Item 19) The cover according to item 15, further comprising an outer coating surrounding the foam layer. (Item 20) The cover according to item 19, wherein the outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof. (Item 21) The cover according to item 19, wherein the foam layer and the outer coating achieve a rating lower than 25 / 50 through the ASTM E84 test standard for flame spread and smoke. (Item 22) A cover positionable to surround an assembly joining a first pipe element and a second pipe element to each other, the cover comprising A first cover portion defining a first recess for receiving the assembly, the first cover portion defining a first channel and a second channel for receiving the first pipe element, the first channel and the second channel being in communication with the first recess, the first cover portion and A second cover portion defining a second recess for receiving the assembly, the second cover portion defining a third channel and a fourth channel for receiving the second pipe element, the third channel and the fourth channel being in communication with the second recess, the second cover portion and comprising The first cover portion and the second cover portion are joined to each other so as to surround the assembly and the pipe element at the joint, the joint comprising a recess facing outwardly away from the first recess and the second recess. Cover. (Item 23) The cover according to item 22, wherein the recess has an asymmetric cross-sectional shape. (Item 24) The cover according to item 22, further comprising a seal positioned within the recess. (Item 25) A first canal positioned within the first channel and in fluid communication with the recess, and A second canal positioned within the second channel and in fluid communication with the recess, and A third canal positioned within the third channel and in fluid communication with the recess, and A fourth canal positioned within the fourth channel and in fluid communication with the recess The cover according to item 22, further comprising. (Item 26) The cover according to item 25, wherein each of the canals has an asymmetric cross-section. (Item 27) The cover according to item 25, wherein each of the canals faces outwardly away from the first recess and the second recess. (Item 28) The cover according to item 25, further comprising a seal positioned within the canal and within the recess, the seal completely surrounding the first recess and the second recess. (Item 29) The cover according to item 28, wherein the seal is selected from the group consisting essentially of a continuous gasket, extruded cork, rope cork, and combinations thereof. (Item 30) The cover according to item 22, wherein the first cover portion and the second cover portion comprise a foam layer. (Item 31) The cover according to item 30, wherein the foam layer has a thermal resistance of at least R = 5 per inch of thickness. (Item 32) The cover according to item 30, wherein the foam layer contains polyisocyanurate. (Item 33) The cover according to item 30, further comprising a coating of polyvinylidene chloride on the foam layer. (Item 34) The cover according to item 30, further comprising an outer coating surrounding the foam layer. (Item 35) The cover according to item 34, wherein the outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof. (Item 36) The cover according to item 34, wherein the foam layer and the outer coating achieve a rating lower than 25 / 50 through the ASTM E84 test standard for flame spread and smoke. (Item 37) The cover according to item 24, further comprising an opening in at least one of the cover portions, the opening being located along the seam, intruding into the recess, the canal extending along the opening, the canal being in fluid communication with the recess and receiving the seal. (Item 38) The first cover portion defines a first opening portion located along the seam. The second cover portion defines a second opening portion located along the seam, and the first opening portion and the second opening portion are aligned to form an opening within the cover. The first canal surrounds the first opening portion and is in fluid communication with the recess. The second canal surrounds the second opening portion and is in fluid communication with the recess. The seal is received within the first canal and the second canal. The cover according to item 24. (Item 39) The cover according to item 22, wherein at least a portion of the seam is defined by a ridge extending from the first cover portion, and the ridge is received within a groove positioned within the second cover portion. (Item 40) The cover according to item 39, wherein the recess is defined by a first surface on one of the first cover portion and the second cover portion, the first surface is angled and directed with respect to a second surface on the other of the first cover portion and the second cover portion, and the first surface and the second surface are in a facing relationship. (Item 41) The cover according to item 40, wherein the first surface is positioned on the first cover portion in proximity to the ridge. (Item 42) The cover according to item 22, wherein the first channel and the third channel surround a first bore, and the second channel and the fourth channel surround a second bore, and the first bore and the second bore are aligned with each other. (Item 43) In the combination of the assembly and the first pipe element and the second pipe element, the assembly comprises a coupling that joins the pipe elements in an end-to-end relationship, according to item 42. (Item 44) In the combination of the assembly and the first pipe element and the second pipe element, the assembly a valve, a first pipe coupling for attaching the first pipe element to the valve, a second pipe coupling for attaching the second pipe element to the valve The cover according to item 42, comprising. (Item 45) In the cover according to item 22, the first channel and the third channel surround a first bore, the second channel and the fourth channel surround a second bore, and the first bore and the second bore are not aligned with each other. (Item 46) In the combination of the cover according to item 45 with the assembly and the first and second pipe elements, the assembly comprises an elbow fitting, a first coupling for joining the first pipe element to the elbow fitting, a second coupling for joining the second pipe element to the elbow fitting The combination comprising. (Item 47) The cover according to item 42 for further joining the first and second pipe elements to a third pipe element, wherein the first cover portion defines a fifth channel for receiving the third pipe element, the fifth channel communicating with the first recess, the second cover portion defines a sixth channel for receiving the third pipe element, the sixth channel communicating with the second recess, the fifth channel and the sixth channel surround a third bore, and the third bore is not aligned with the first and second bores, A cover. (Item 48) In the combination of the cover according to item 47 with the assembly and the first, second and third pipe elements, the assembly comprises A T-shaped fitting, and a first coupling for joining the first pipe element to the T-shaped fitting, a second coupling for joining the second pipe element to the T-shaped fitting, and a third coupling for joining the third pipe element to the T-shaped fitting comprising a combination.

Brief Description of the Drawings

[0020] (Brief Description of the Drawings)

Figure 1

[0021]

Figure 2

[0022]

Figure 3

Figure 4

[0023]

Figure 5

[0024]

Figure 6

[0025]

Figure 7

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Figure 8

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Figure 9

[0028]

Figure 10

[0029]

Figure 11

[0030]

Figure 12

[0031]

Figure 13

[0032]

Figure 14

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Figure 15

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Figure 16

[0035]

Figure 17

[0036]

Figure 18

DETAILED DESCRIPTION

[0037] (Detailed Description) FIGS. 1 and 2 show an exemplary cover 10 for insulating an assembly 12 that joins pipe elements 14. By way of example, assembly 12 includes a grooved elbow fitting 16 and two mechanical couplings 18. The cover may also be employed to insulate other types of assemblies including straight connectors, T - fittings and valves, and single mechanical couplings for flanges, threaded or welded fittings and the like. In the exemplary embodiment, cover 10 includes a foam layer 20 made of a material such as polyisocyanurate having a high insulation (“R”) value of R = 5 or greater per inch of thickness. The foam layer 20 may have an external coating 22 that provides low permeability moisture resistance, mechanical durability and weather resistance. The external coating 22 is preferably a polyurea, and it is desired that the foam layer 20 and coating 22 achieve a rating lower than 25 / 50 through the ASTM E84 test criteria for flame spread and developed smoke, respectively. The external coating 22 may also be provided by a shell of polyvinyl chloride (PVC). To provide further resistance to permeability, an auxiliary coating of polyvinylidene chloride may also be applied either to the external coating 22 or to the foam layer 20 prior to the application of the external coating 22. In addition to insulating the assembly 12 and pipe elements 14 to prevent energy loss, cover 10 is also expected to provide moisture resistance, for example, to prevent condensate from forming when the pipe elements carry cold water in a wet environment.

[0038] An exemplary cover 10 according to the present invention includes a first cover portion 24 and a second cover portion 26. As shown in FIG. 3, the first cover portion 24 defines a first recess 28 for receiving the assembly 12. The first recess 28 is advantageously designed to have a sufficient volume so as to accommodate known variations of the assembly, such as rotation of the coupling 18 about the axis of the pipe (FIG. 2) to which the coupling 18 is connected in this example. The first cover portion 24 also has a first side wall 30 that defines a first channel 32 and a second side wall 34 that defines a second channel 36. Both the first channel 32 and the second channel 36 communicate with the first recess 28 and receive the pipe element 14. As shown in FIG. 4, the second cover portion 26 defines a second recess 38 for receiving the assembly 12, as well as a third side wall 40 that defines a third channel 42 and a fourth side wall 44 that defines a fourth channel 46 for receiving the pipe element 14. The third channel 42 and the fourth channel 46 communicate with the second recess 38, and the second recess as well as the third and fourth channels are mirror images of the first recess and the first and second channels, respectively, allowing the first cover portion 24 and the second cover portion 26 to cooperate to surround and insulate the assembly 12 and the portion of the pipe element 14 included in the assembly as shown in FIG. 1.

[0039] As shown in FIGS. 2 and 3, the first boundary surface 48 is positioned on the first cover portion 24. The first boundary surface 48 surrounds the first recess 38 as well as the first channel 32 and the second channel 36. As shown in FIG. 4, the second cover portion 26 has a second boundary surface 50 that is a mirror image of the first boundary surface 48. The second boundary surface 50 surrounds the second recess 38 as well as the third channel 42 and the fourth channel 46. The first boundary surface 48 and the second boundary surface 50 are contact surfaces at which the first cover portion 24 and the second cover portion 26 are joined to surround the assembly 12. As shown in FIG. 3, the first canal 52 is positioned within the first side wall 30 and is oriented to cross the first channel 32. The second canal 54 is positioned within the second side wall 34 and is oriented to cross the second channel 36. As shown in FIG. 4, the third canal 56 is positioned within the third side wall 40 of the second cover portion 26 and the fourth canal 58 is positioned within the fourth side wall 44 of the second cover portion 26. Similar to the first canal 52 and the second canal 54, the third canal 56 and the fourth canal 58 are oriented to cross the third channel and the fourth channel (42 and 46, respectively) of the second cover portion 26.

[0040] FIG. 5 shows a cross-sectional view of a portion of the cover 10 taken in a direction perpendicular to the first interface 48 and the second interface 50 along line 5-5 of FIG. 1, thereby showing a first canal 52 within a first channel 32 of the first cover portion 24 and a third canal 56 within a third channel 42 of the second cover portion 26. The first canal 52 and the third canal 56 circumferentially surround the pipe element 14 and provide a region for a seal to reside and completely seal the contact between the first channel 32 and the third channel 42 and the pipe element 14. The configuration of the second canal 54 and the fourth canal 58 is similar for sealing the contact between the pipe element 14 and the second channel 36 of the first cover portion and the fourth channel 46 of the second cover portion (not shown). Since moisture ingress often occurs at the contact between the insulation layer and the pipe element, using canals to seal the pipe element 14 is expected to provide a significant advantage over prior art insulation systems.

[0041] As shown in FIGS. 3 and 4, it is advantageous to use an array of ridges and grooves to join the first cover portion 24 and the second cover portion 26. In the exemplary embodiment, the cover portions are advantageously designed to eliminate the need for distinct “male” and “female” counterparts. The first interface surface 48 of the cover portion 24 and the second interface surface 50 of the cover portion 26 are inverted mirror images of each other. For this purpose, at least a first portion 60 of the first interface surface 48 of the first cover portion 24 comprises a groove 62 extending along it. This groove 62 receives a ridge 64 extending along a first portion 66 of the second interface surface 50 of the second cover portion 26. Further, the groove 62 within the first portion 60 of the first interface surface 48 of the first cover portion 24 is in fluid communication with the first canal 52 of the first channel 32 and the third canal 56 of the third channel 42 of the second cover portion 26, thereby providing a region continuous with the groove 62 where a seal can reside to seal between the pipe element 14 and the channels 32 and 42. Consistent with the genderless design of the cover 10, at least a second portion 68 of the first interface surface 48 of the first cover portion 24 comprises a ridge 70 extending therefrom. The ridge 70 is received within a mating groove 72 within a second portion 74 of the second interface surface 50 of the second cover portion 26. Further, the groove 72 is in fluid communication with the second canal 54 of the second channel 36 and the fourth canal 58 of the fourth channel 46, thus providing a region continuous with the groove 72 where a seal can reside to seal between the pipe element 14 and the second channel 36 and the fourth channel 46. When assembling the cover portion 24 and the cover portion 26, the groove 62 within the first portion 60 of the first interface surface 48 of the first cover portion 24 is in fluid communication with the groove 72 within the second portion 74 of the second interface surface 50 of the second cover portion 26. The grooves 62 and 72 within the various portions of the first and second cover portions combine to form a continuous three-dimensional boundary 76 in fluid communication, which is schematically depicted by a dashed line in FIG. 6 and appears to continuously cross the contact between the ridges and grooves between the first cover portion 24 and the second cover portion 26, as well as the canals 52, 54, 56 and 58 (canals 52 and 56 are visible) surrounding the pipe element.Accordingly, the combination of grooves and canals enables the entire cover 10 to be completely sealed by a seal, which is preferably seamless and extends between the cover portion 24 and the cover portion 26 and between the cover portion and the pipe element 14, isolating the recesses 28 and 30 and the assembly 12 therein from the environment outside the thermal cover.

[0042] FIG. 7 shows an example of a seal 78 received within grooves and canals that form a three-dimensional boundary 76. The seal 78 can include an extruded sealant such as cork, which is applied directly to the grooves and canals prior to assembling the cover portions 24 and 26 together for the assembly 12. In another embodiment, the seal 78 can be formed from a rope cork laid within the grooves and canals of the cover portions. In a further embodiment, the seal 78 can be a continuous or partially continuous gasket applied to the grooves and canals of one or the other or both cover portions, either fully or in part, prior to assembly. Throughout the assembly of the various embodiments of the seal with the cover portions, the joint of the ridges and grooves between the cover portions is designed to force the seal against the outer surface of the cover 10 as described below.

[0043] Figures 8 and 8A show in detail cross-sections of exemplary ridges 64 and grooves 62 (ridges 70 and grooves 72 may be similar). In this example, ridge 64 is asymmetric and has a undulating surface 80 that is angled and oriented with respect to the second interface surface 50 of the second cover portion 26. Ridge 64 further has a working surface 82 that is similarly angled and oriented with respect to the second interface surface 50 of the second cover portion 26. Ridge 64 engages with groove 62 at the first portion 60 of the first interface surface 48 of the first cover portion 24 (see FIG. 3). In this example, groove 62 is also asymmetric and has a rear wall 84 configured to join with the working surface 82 of ridge 64. Groove 62 further has a trough 86 that extends to the first interface surface 48 and is positioned adjacent to the rear wall 84. The engagement between groove 62 and ridge 64 is at a seam 88 that has a recess 90 between the first cover portion 24 and the second cover portion 26. Due to the asymmetry of groove 62 and ridge 64, recess 90 has an asymmetric cross-sectional shape and faces outwardly away from channels 32, 36, 42, and 46 (32 and 42 are shown) as well as recesses 28 and 30. By opening outwardly, recess 90 provides a visual cue to the user suggesting that it is intended to receive a seal. As shown in FIG. 9, recess 90 is present where the ridge and groove meet, and when groove 62 is engaged by ridge 64, recess 90 appears within the recess 90 when seal 78 (see FIG. 7) is forced out of groove 62. Thus, recess 90 can be used after assembly to provide a visual confirmation that the seam 88 between the cover portions is properly sealed. Through the geometric arrangement of asymmetric ridges 64 and grooves 62 as shown in FIG. 8, particularly the engagement of working surface 82 with rear wall 84 in the presence of adjacent trough 86 and undulating surface 80, the seal is preferentially forced outwardly into recess 90 rather than inwardly between the interface surfaces 48 and 50 of cover portions 22 and 24. This geometric arrangement is created by ensuring that during assembly, when ridge 64 is engaged with groove 62, recess 90 represents the "path of least resistance" to the flow of the seal.In this embodiment, the seal disposed within the groove 62 faces a resistance to flow outwardly into the recess 90 that is less than the resistance to flow inwardly between the interface surfaces 48 and 50 beyond the rear wall 84. Since the curing of commonly available sealing materials requires exposure to atmospheric moisture or oxygen, this preferential outward flow of the seal 78 promotes more rapid and complete curing by preferentially moving the material outwardly into the recess 90. The volume defined by the recess 90 is also advantageously sized to accommodate a bead of a conventional size (a bead 1 / 8” to about 3 / 8” in diameter is conventional) of sealant while limiting the likelihood (deemed undesirable) that the seal 78 extends beyond the volume defined by the recess 90 while still providing a visual confirmation of a proper seal between the cover portion 24 and the cover portion 26. The flow of the seal 78 can be the same as that described above with respect to its engagement with the groove 72 of the ridge 70, and the fact that the grooves 62 and 72 are in fluid communication provides a visible and continuous seal within a continuous recess 90 that extends between the cover portion 24 and the cover portion 26 along the entire seam 88.

[0044] In addition to the ridges and grooves, the rabbet joint may also be used between the first cover portion 22 and the second cover portion 24 at the seam 88. As shown in FIG. 3, an alignment block 92 is positioned proximate to the second channel 36 and a notch 94 is positioned proximate to the first channel 32 within the first cover portion 24 to ensure proper alignment of the cover portions 24 and 26 when joined. Consistent with the seamless nature of the cover, as shown in FIG. 4, the alignment block 92 is also positioned proximate to the third channel 42 and the notch 94 is positioned proximate to the fourth channel 46 of the second cover portion 26. When the cover portions are joined, the alignment block 92 engages the notch 94 in each cover portion to ensure proper fit. The use of the rabbet joint allows for an interference fit that provides mechanical interlocking of the cover portions upon initial assembly with stepped alignment blocks and notches as shown, thereby minimizing the need for additional machining hold during final assembly.

[0045] As shown in FIG. 5, the canals 52, 54, 56 and 58 (52 and 56 are shown) may also be advantageously designed to allow the seal 78 to be forced outwardly towards the surfaces of the cover portions 24 and 26 and thereby provide visible evidence of a complete seal of the cover 10 around the assembly 12. The first canal 52 and the third canal 56 are shown as an example having an asymmetric cross-sectional shape and being oriented to face outwardly away from the recesses 28 and 38. This arrangement forces the seal 78 to move outwardly towards the outer surface of the cover when the cover portions 24 and 26 are assembled for the assembly 12. The second canal 54 and the fourth canal 58, although not shown, may be similarly shaped and arranged.

[0046] Figures 1, 3, and 4 show an exemplary cover embodiment 10, where the first channel 32 and the third channel 42 surround the first bore 96, and the second channel 36 and the fourth channel 46 surround the second bore 98. The bores 96 and 98 are not axially aligned with each other, which allows the cover 10 to cover an assembly 12 including an elbow fitting 16, a mechanical coupling 18, and a pipe element 14.

[0047] Figures 10 - 12 illustrate another exemplary cover embodiment 100 including a first cover portion 102 and a second cover portion 104. The cover portions 102 and 104 have many of the same features as described above for the cover portions 24 and 26, and like reference characters are used to identify like elements. The first bore 96 and the second bore 98 of the cover 100 are axially aligned, which allows the cover 100 to be used with an assembly 106 including a mechanical coupling 18 that joins the pipe element 14 in an end - to - end relationship.

[0048] Figures 13 - 15 show another exemplary cover embodiment 108 used to cover an assembly joining a third pipe element 112 to a first pipe element 114 and a second pipe element 116. The first cover portion 118 defines a fifth channel 120 in fluid communication with the first recess 28, and the second cover portion 122 defines a sixth channel 124 in fluid communication with the second recess 38. When the cover portions 118 and 122 are assembled (Figure 13), they define a third bore 126 that is not aligned with the first bore 96 and the second bore 98. The cover 108 can be used with an assembly 128 (Figure 14) including a T - fitting 130 joining the first pipe element 114, the second pipe element 116, and the third pipe element 112, as well as a first coupling 132, a second coupling 134, and a third coupling 136.

[0049] Figures 16 - 18 show an exemplary cover embodiment 144 for covering an assembly 146 (FIG. 17) comprising a valve 148 coupled to a first pipe element 150 and a second pipe element 152 using mechanical couplings 154 and 156. The cover 144 has an opening 158 in a first cover portion 160 and a second cover portion 162 to accommodate a valve stem 164. As shown in FIG. 18 with respect to the cover portion 160, the opening 158 is located between the cover portions along a seam 88 and interrupts a recess 90 (see also FIG. 16). First and second canals 166 extend along each cover portion and surround the opening 158 in each cover portion (the cover portion 160 is shown). The canals 166 are in fluid communication with the recess 90 and each receives a portion of a continuous seal (see FIG. 7) that provides a seal between the cover portions 160 and 162 and the valve stem 164. Thus, the continuous seal is maintained to isolate the assembly from the surroundings even when the cover according to the present invention is perforated by the opening.

[0050] Exemplary cover embodiments disclosed herein are substantially integral when the cover portions are joined, but other embodiments are possible where the cover comprises separate parts that are assembled from the parts and sealed to each other throughout the assembly.

Claims

Claim 1 A cover positionable to surround an assembly integrating pipe elements, the cover comprising: A first cover portion defining a first recess for receiving the assembly, the first cover portion having a first sidewall defining a first channel and a second sidewall defining a second channel, the first channel and the second channel communicating with the first recess, the first channel and the second channel being for receiving the pipe elements, a first cover portion; A second cover portion defining a second recess for receiving the assembly, the second cover portion having a third sidewall defining a third channel and a fourth sidewall defining a fourth channel, the third channel and the fourth channel communicating with the second recess, the third channel and the fourth channel being for receiving the pipe elements, a second cover portion; A first interface surface positioned on the first cover portion, the first interface surface extending outwardly from the first recess and the first channel and the second channel, a first interface surface; A second interface surface positioned on the second cover portion, the second interface surface extending outwardly from the second recess and the third channel and the fourth channel, at least a first portion of the first interface surface and at least a first portion of the second interface surface defining a joint extending along the boundary of the first interface surface and the second interface surface when the first cover portion and the second cover portion are joined to each other so as to surround the assembly, a second interface surface; A seal positionable within the joint, the seal configured to extend along the boundary of the first interface surface and the second interface surface so as to isolate the assembly from the surroundings, a seal Comprising: The at least first portion of the first interface surface comprises a groove extending along it, the at least first portion of the second interface surface comprises a ridge extending therefrom, the ridge being received within the groove when the first cover portion and the second cover portion are joined to each other so as to surround the assembly, a cover. Claim 2 A first canal positioned within the first sidewall so as to cross the first channel; A second canal positioned within the second sidewall so as to cross the second channel; A third canal positioned within the third sidewall so as to cross the third channel; A fourth canal positioned within the fourth sidewall so as to cross the fourth channel The cover according to claim 1, further comprising.

3. The groove in the first portion of the first interface surface communicates with the first canal and the third canal when the first cover portion and the second cover portion are joined to each other. The cover according to claim 2.

4. At least a second portion of the first interface surface comprises a ridge extending therefrom, At least a second portion of the second interface surface comprises a groove extending along it, and the ridge in the second portion of the first interface surface is received in the groove in the second portion of the second interface surface when the first cover portion and the second cover portion are joined to each other. The cover according to claim 2.

5. The groove in the second portion of the second interface surface communicates with the second canal and the fourth canal when the first cover portion and the second cover portion are joined to each other. The cover according to claim 4.

6. The groove in the first portion of the first interface surface communicates with the groove in the second portion of the second interface surface when the first cover portion and the second cover portion are joined to each other. The cover according to claim 4.

7. The groove in the first portion of the first interface surface has a surface, and the surface is directed at an angle to the second interface surface, thereby defining a depression between the first cover portion and the second cover portion. The cover according to claim 1.

8. The groove in the second portion of the second interface surface has a surface, and the surface is directed at an angle to the first interface surface, thereby defining a depression between the first cover portion and the second cover portion. The cover according to claim 4.

9. The seal extends continuously between the first cover portion and the second cover portion and between the first cover portion and the second cover portion and the pipe element, the cover according to claim 7.

10. The assembly includes a valve coupled to the pipe element, the cover further includes openings in the first cover portion and the second cover portion to accommodate the valve stem of the valve, the openings are located along the first interface surface and the second interface surface, a fifth canal on the first cover portion extends along the opening, a sixth canal extends along the second cover portion, the canals communicate with the recess and receive the seal, the cover according to claim 9.

11. The seal is selected from the group consisting essentially of a continuous gasket, extruded cork, rope cork, and combinations thereof, the cover according to claim 1.

12. The first cover portion and the second cover portion include a foam layer, the cover according to claim 1.

13. The foam layer includes polyisocyanurate, the cover according to claim 12.

14. The cover according to claim 12 further includes a polyvinylidene chloride coating on the foam layer.

15. The cover according to claim 12 further includes an outer coating surrounding the foam layer.

16. The outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof, the cover according to claim 15.

17. A cover positionable to surround an assembly joining pipe elements, the cover is a first cover portion defining a first recess for receiving the assembly, the first cover portion has a first sidewall defining a first channel and a second sidewall defining a second channel, the first channel and the second channel communicate with the first recess, the first channel and the second channel are for receiving the pipe element, a first cover portion and A second cover portion defining a second recess for receiving the assembly, the second cover portion having a third sidewall defining a third channel and a fourth sidewall defining a fourth channel, the third channel and the fourth channel communicating with the second recess, the third channel and the fourth channel being for receiving the pipe element, a second cover portion and A first interface positioned on the first cover portion, the first interface extending outwardly from the first recess and the first and second channels, a first interface and A second interface positioned on the second cover portion, the second interface extending outwardly from the second recess and the third and fourth channels, the second interface being engageable with the first interface at a joint extending along the boundary of the first and second interfaces for joining the first cover portion and the second cover portion so as to surround the assembly, a second interface and A seal positionable within the joint, the seal being configured to extend along the boundary of the first and second interfaces so as to isolate the assembly from the surroundings, a seal and Comprising The first interface includes a first alignment notch and a second alignment notch. The second interface includes a first alignment block and a second alignment block, the first alignment notch and the second alignment notch having a complementary shape with respect to the first alignment block and the second alignment block such that the first alignment block and the second alignment block interlock with the first alignment notch and the second alignment notch when the first cover portion and the second cover portion are joined together. Cover.

18. A first canal positioned within the first sidewall so as to be transverse to the first channel, and A second canal positioned within the second sidewall so as to be transverse to the second channel, and A third canal positioned within the third sidewall so as to be transverse to the third channel, and A fourth canal positioned within the fourth sidewall so as to be transverse to the fourth channel The cover according to claim 17, further comprising

19. wherein the first interface surface comprises a third alignment block and a fourth alignment block, the second interface surface comprises a third alignment notch and a fourth alignment notch, and the third alignment notch and the fourth alignment notch have a complementary shape with respect to the third alignment block and the fourth alignment block such that when the first cover portion and the second cover portion are joined to each other, the third alignment block and the fourth alignment block are interlocked with the third alignment notch and the fourth alignment notch, The cover according to claim 18.

20. The cover according to claim 19, wherein the alignment block and the alignment notch are in a stepped shape.

21. A cover positionable to surround an assembly in which a first pipe element and a second pipe element are joined to each other, the cover comprising: a first cover portion defining a first recess for receiving the assembly, the first cover portion defining a first channel for receiving the first pipe element and a second channel for receiving the second pipe element, the first channel and the second channel communicating with the first recess, a first cover portion; a second cover portion defining a second recess for receiving the assembly, the second cover portion defining a third channel for receiving the first pipe element and a fourth channel for receiving the second pipe element, the third channel and the fourth channel communicating with the second recess, a second cover portion; a seal and The first cover portion and the second cover portion are joined to each other by a joint so as to surround the assembly and the pipe element, the seal is positionable within the joint, the joined first cover portion and second cover portion form a seam, the seam has a recess facing outwardly away from the first recess and the second recess, at least a portion of the joint is defined by a ridge extending from the first cover portion, the ridge is received within a groove positioned within the second cover portion, the recess is defined by a first surface on one of the first cover portion and the second cover portion, the first surface is angled and oriented relative to a second surface on the other of the first cover portion and the second cover portion, and the first surface and the second surface are in a facing relationship. Cover. Claim 22 The cover according to claim 21, wherein the recess has an asymmetric cross-sectional shape when viewed in a direction along any one of the first channel, the second channel, the third channel, and the fourth channel. Claim 23 The cover according to claim 21, further comprising a seal positioned within the recess. Claim 24 A first canal positioned within the first channel and in communication with the recess; A second canal positioned within the second channel and in communication with the recess; A third canal positioned within the third channel and in communication with the recess; And a fourth canal positioned within the fourth channel and in communication with the recess The cover according to claim 21, further comprising. Claim 25 The cover according to claim 24, wherein each of the canals faces outwardly away from the first recess and the second recess. Claim 26 The cover according to claim 24, wherein the seal is positioned within the canals and within the recess, and the seal extends continuously between the first cover portion and the second cover portion and between the first cover portion and the second cover portion and the pipe element. Claim 27 The cover according to claim 21, wherein the seal is selected from the group consisting essentially of a continuous gasket, extruded cork, rope cork, and combinations thereof. Claim 28 The cover according to claim 21, wherein the first cover portion and the second cover portion comprise a foam layer.

29. The cover according to claim 28, wherein the foam layer contains polyisocyanurate.

30. The cover according to claim 28, further comprising a coating of polyvinylidene chloride on the foam layer.

31. The cover according to claim 28, further comprising an outer coating surrounding the foam layer.

32. The cover according to claim 31, wherein the outer coating is selected from the group consisting essentially of polyureas, polyvinyl chlorides, polyvinylidene chlorides, and combinations thereof.

33. The assembly includes a valve coupled to the pipe element, and the cover further includes an opening in at least one of the cover portions to accommodate a valve stem of the valve, the opening being located along the seam, interrupting the recess, a canal extending along the opening, the canal communicating with the recess and receiving the seal, the cover according to claim 23.

34. The first cover portion defines a first opening portion located along the seam, The second cover portion defines a second opening portion located along the seam, the first opening portion and the second opening portion being aligned to form an opening in the cover, the opening communicating with the first recess and the second recess, A first canal surrounds the first opening portion and communicates with the recess, A second canal surrounds the second opening portion and communicates with the recess, The seal is received within the first canal and the second canal, The cover according to claim 23.

35. The cover according to claim 21, wherein the first surface is positioned on the first cover portion proximate the ridge.

36. The cover according to claim 21, wherein the first channel and the third channel form a first bore for receiving the first pipe element, and the second channel and the fourth channel form a second bore for receiving the second pipe element, the first bore and the second bore being aligned with each other.

37. In the assembly and in combination with the first pipe element and the second pipe element, the assembly comprises a coupling for joining the pipe elements in an end-to-end relationship, the cover according to claim 36.

38. In the assembly and in combination with the first pipe element and the second pipe element, the assembly a valve; a first pipe coupling for attaching the first pipe element to the valve; a second pipe coupling for attaching the second pipe element to the valve comprising the cover according to claim 36.

39. The first channel and the third channel form a first bore for receiving the first pipe element, the second channel and the fourth channel form a second bore for receiving the second pipe element, and the first bore and the second bore are not aligned with each other, the cover according to claim 21.

40. The cover according to claim 39, and in the assembly and in combination with the first pipe element and the second pipe element, the assembly an elbow fitting; a first coupling for joining the first pipe element to the elbow fitting; a second coupling for joining the second pipe element to the elbow fitting comprising a combination.

41. The cover according to claim 36 for further joining the first pipe element and the second pipe element to a third pipe element, the first cover portion defines a fifth channel for receiving the third pipe element, the fifth channel communicates with the first recess; the second cover portion defines a sixth channel for receiving the third pipe element, the sixth channel communicates with the second recess; the fifth channel and the sixth channel form a third bore for receiving the third pipe element, and the third bore is not aligned with the first bore and the second bore, cover.

42. The cover according to claim 41, and in the assembly and in combination with the first pipe element, the second pipe element and the third pipe element, the assembly a T-fitting; a first coupling for joining the first pipe element to the T-shaped fitting; a second coupling for joining the second pipe element to the T-shaped fitting; a third coupling for joining the third pipe element to the T-shaped fitting and a combination comprising the same.

Images