Composite coupling for insulated high temperature fluid carrying conduits

Claim 2

A composite coupling for joining fluid carrying insulated conduits composed of concentric lengths of pipe spaced apart from each other having therebetween intermediate thermal insulation substantially along their common lengths, and comprising an assembled unit for an end of a section of insulated fluid carrying conduit of concentric lengths of pipe with intermediate thermal insulation which forms a male type linkage for cooperating union in a slip joint with a female type linkage on an adjacent section of another like insulated fluid carrying conduit, said composite coupling assembled unit comprising the combination of: a. a tubular sealing sleeve having a pair of exteriorly protruding annular flanges about its inner outer surface located inwardly from each end, and within said tubular sleeve a pair of annular grooves in the inner surface adapted to receive sealing rings and having sealing rings seated therein; b. lock block of rigid high temperature insulating body annularly surrounding said tubular sealing sleeve and fixed in position thereon by having a section extending intermediate the said pair of exteriorly protruding annular flanges of the tubular sealing sleeve, said lock block having an exteriorly projecting annular flange about its outer peripheral surface; and c. an elastic annular end cap seal superimposed over a substantial portion of the outer surface of the said lock block surrounding the tubular sealing sleeve beginning in abutting and sealing contact with the said tubular sealing sleeve and extending radially therefrom over the end of said lock block and then extending back over the outer peripheral surface of the said lock block.

Claim 3

The composite coupling of claim 1, wherein the elastic annular end cap seal of the assembled unit superimposed over a substantial portion of the outer surface of the said lock block of rigid high temperature insulating body extends over and back beyond the exteriorly projecting annular flange about the outer peripheral surface of the said lock block of rigid high temperature insulating body conforming to its contour.

Claim 4

lock block of rigid high temperature insulating body annularly surrounding the said tubular sealing sleeve and fixed in its position thereOn by having a section extending intermediate the said pair of exteriorly protruding annular flanges of the tubular sealing sleeve, said lock block being in part of a circumference less than that of the interior of the outer protective pipe of the insulated fluid carrying conduit, and extending into the said outer protective pipe, said lock block having an exteriorly projecting annular flange about its outer peripheral surface generally intermediate thereof providing a stop; and

Claim 5

lock block of rigid high temperature insulating body annularly surrounding the said tubular sealing sleeve and fixed in its position thereOn by having a section extending intermediate the said pair of exteriorly protruding annular flanges of the tubular sealing sleeve, said lock block being in part of a circumference less than that of the interior of the outer protective pipe of the insulated fluid carrying conduit, and extending into the said outer protective pipe, said lock block having an exteriorly projecting annular flange about its outer peripheral surface generally intermediate thereof providing a stop; and

Claim 6

a lock block of rigid high temperature insulating body annularly surrounding the said tubular sealing sleeve and fixed in its position thereon by having a section extending intermediate the said pair of exteriorly protruding annular flanges of said tubular sealing sleeve, said lock block being in part of a circumference less than that of the interior of the outer protective pipe of the insulated conduit and extending into said outer protective pipe of the first insulated conduit, an exterior projecting annular flange about the outer peripheral surface of the lock block and generally intermediate thereof providing a stop; and,

Claim 7

a lock block of rigid high temperature insulating body annularly surrounding the said tubular sealing sleeve and fixed in its position thereon by having a section extending intermediate the said pair of exteriorly protruding annular flanges of said tubular sealing sleeve, said lock block being in part of a circumference less than that of the interior of the outer protective pipe of the insulated conduit and extending into said outer protective pipe of the first insulated conduit, an exterior projecting annular flange about the outer peripheral surface of the lock block and generally intermediate thereof providing a stop; and,

Claim 8

an elastic annular end cap seal superimposed over a substantial portion of the outer surface of said lock block surrounding the tubular sealing sleeve beginning in abutting and sealing contact with the tubular sealing sleeve and extending radially therefrom over the end of said lock block and then extending back over the outer peripheral surface of the lock block of rigid high temperature insulating body substantially along its length to at least the said exteriorly projecting annular flange about its outer periphery; c. said female linkage on a terminal end of the second section of insulated conduit comprising an elastic annular plug seal inserted within the outer protective pipe and surrounding the inner fluid carrying pipe sealing the annular space between said pipes and located recessed inwardly from their terminal ends; and d. said male linkage of the composite coupling of the first section of insulated conduit being inserted within the outer protective pipe of the second section of insulated conduit into the recess formed by the inwardly located annular seal plug therein whereby the annular end cap seal of the first section of insulated conduit joins in sealing relationship with the outer protective pipe of the second section of insulated conduit and the tubular sealing sleeve of the composite coupling surrounds the end of the inner fluid carrying pipe of the second section of insulating conduit in telescoping arrangement therewith and with one of said sealing rings seated within the annular groove in the inner surface of the sealing sleeve in sealing contact with the outer surface of the said inner pipe of the second section of insulated conduit providing a fluid tight seal therebetween, whereby the said tubular sealing sleeve bridges and joins in sealing relationship the ends of the fluid carrying pipe of the first and second sections of insulated conduit providing a union which is free to slide in reciprocating movement in alignment with the longitudinal axis of the lengths of the first and second section of insulated conduit conduit.

Claim 9

an elastic annular end cap seal superimposed over a substantial portion of the outer surface of said lock block surrounding the tubular sealing sleeve beginning in abutting and sealing contact with the tubular sealing sleeve and extending radially therefrom over the end of said lock block and then extending back over the outer peripheral surface of the lock block of rigid high temperature insulating body substantially along its length to at least the said exteriorly projecting annular flange about its outer periphery; c. said female linkage on a terminal end of the second section of insulated conduit comprising an elastic annular plug seal inserted within the outer protective pipe and surrounding the inner fluid carrying pipe sealing the annular space between said pipes and located recessed inwardly from their terminal ends; and d. said male linkage of the composite coupling of the first section of insulated conduit being inserted within the outer protective pipe of the second section of insulated conduit into the recess formed by the inwardly located annular seal plug therein whereby the annular end cap seal of the first section of insulated conduit joins in sealing relationship with the outer protective pipe of the second section of insulated conduit and the tubular sealing sleeve of the composite coupling surrounds the end of the inner fluid carrying pipe of the second section of insulating conduit in telescoping arrangement therewith and with one of said sealing rings seated within the annular groove in the inner surface of the sealing sleeve in sealing contact with the outer surface of the said inner pipe of the second section of insulated conduit providing a fluid tight seal therebetween, whereby the said tubular sealing sleeve bridges and joins in sealing relationship the ends of the fluid carrying pipe of the first and second sections of insulated conduit providing a union which is free to slide in reciprocating movement in alignment with the longitudinal axis of the lengths of the first and second section of insulated conduit conduit.

Claim 10

an elastic annular end cap seal superimposed over a substantial portion of the outer surface of said lock block surrounding the tubular sealing sleeve beginning in abutting and sealing contact with the tubular sealing sleeve and extending radially therefrom over the end of the said lock block and then extending back over the outer peripheral surface of the lock block of rigid high temperature insulating body substantially along its length to at least the said exteriorly projecting annular flange about its outer periphery.

Claim 11

an elastic annular end cap seal superimposed over a substantial portion of the outer surface of said lock block surrounding the tubular sealing sleeve beginning in abutting and sealing contact with the tubular sealing sleeve and extending radially therefrom over the end of the said lock block and then extending back over the outer peripheral surface of the lock block of rigid high temperature insulating body substantially along its length to at least the said exteriorly projecting annular flange about its outer periphery.

Claim 12

The composite coupling of claim 2, wherein the tubular sealing sleeve of the assembly has an interiorly projecting annular flange about its inner surface located approximately intermediate its length to provide a stop for pipe inserted in telescoping arrangement therein.

Claim 13

The composite coupling of claim 3, wherein the lock block of rigid high temperature insulated body of the assembled unit is constructed in two semicylindrical sections to facilitate assembly.

Claim 14

The composite coupling of claim 3 wherein the elastic annular end cap seal is provided with at least one annular sealing lip about it its periphery intermediate its end.

Claim 15

The composite coupling of claim 5, wherein the tubular sealing sleeve of the assembled unit has two pair of seals positioned within its inner surface with two sealing rings in parallel located inwardly from each end thereof and each pair of sealing rings in combination with the tubular sleeve is adapted to receive in sealing relationship the terminal end of a fluid carrying pipe in each of the opposite ends of the tubular sleeve.

Claim 16

A thermal insulated fluid carrying conduit having a push-in composite coupling, comprising the combination of: a. a fluid carrying insulated conduit of an inner fluid carrying pipe and an outer protective pipe spaced apart from each other and having therebetween intermediate thermal insulation substantially along their common lengths, said fluid carrying conduit having on one end thereof a composite coupling unit which forms a male type linkage for cooperating union in a slip joint with a female type linkage on an adjacent section of another like insulated fluid carrying conduit; b. said composite coupling assembly on an end of the insulated fluid carrying conduit formed of an assembled unit comprising:

Claim 17

A thermal insulated fluid carrying conduit having a push-in composite coupling, comprising the combination of: a. a fluid carrying insulated conduit of an inner fluid carrying pipe and an outer protective pipe spaced apart from each other and having therebetween intermediate thermal insulation substantially along their common lengths, said fluid carrying conduit having on one end thereof a composite coupling unit which forms a male type linkage for cooperating union in a slip joint with a female type linkage on an adjacent section of another like insulated fluid carrying conduit; b. said composite coupling assembly on an end of the insulated fluid carrying conduit formed of an assembled unit comprising:

Claim 18

The thermal insulated fluid carrying conduit with the push-in composite coupling of claim 7, wherein the elastic annular end cap seal superimposed over a substantial portion of the outer surface of the said lock block surrounding the tubular sealing sleeve extends over the outer peripheral surface of the said lock block including the said exteriorly projecting annular flange conforming to its contour and continues into the interior of the outer protective pipe of the insulated fluid carrying conduit intermediate the said outer protective pipe and the said lock block inserted therein thereby forming a seal between said components.

Claim 19

The thermal insulated fluid carrying conduit with the push-in composite coupling of claim 8, wherein the terminal end of the thermal insulated fluid carrying conduit opposite that carrying the said composite push-in coupling is provided with an annular sealing plug intermediate the concentric lengths of the inner fluid carrying pipe and the outer protective pipe and recessed back from the ends of said concentric pipes.

Claim 20

The thermal insulated fluid carrying conduit with push-in composite coupling of claim 9, wherein the elastic annular end cap seal is provided with at least one annular sealing lip about its periphery outward from its adjoining section of the assembled therewith insulated fluid carrying conduit to form a seal with the outer protective pipe of an adjacent section of such insulated fluid carrying conduit when joined therewith.

Claim 21

The thermal insulated fluid carrying conduit with push-in composite coupling of claim 10, wherein the tubular sealing sleeve of the assembly has an interiorly projecting annular flange about its inner surface located approximately intermediate its length to provide a stop for the pipe inserted in telescoping arrangement therein.

Claim 22

The thermal insulated fluid carrying conduit having a push-in composite coupling of claim 11, wherein the lock block of rigid high temperature insulated body of the assembled assembled unit is constructed in two semicylindrical sections to facilitate assembly.

Claim 23

The thermal insulated fluid carrying conduit with push-in composite coupling of claim 12, wherein the tubular sealing sleeve of the assembled unit has two pair of seals positioned within its inner surface with two sealing rings in parallel located inwardly from each end thereof and each pair of sealing rings in combination with the tubular sleeve is adapted to receive in sealing relationship the terminal end of a fluid carrying pipe in each of the ends of the said tubular sleeve and form a seal therewith.

Claim 24

A first and second thermal insulated fluid carrying conduit joined together by means of a push-in composite coupling, comprising the combination of: a. a first and second section of fluid carrying insulated conduit each including an inner fluid carrying pipe and an outer protective pipe spaced apart from each other and having therebetween intermediate thermal insulating insulation sUbstantially along their common lengths, and a terminal end of the first of said section of insulated conduit being joined to a terminal end of the second of said section of insulated conduit by means of a push-in composite coupling which provides a male type linkage on one end of the said first section of insulated conduit by means of a for cooperating union in a slip joint with a female type linkage on one end of said second section of insulated conduit; b. said male linkage of the composite coupling on a terminal end of the first section of insulated conduit comprising:

Claim 25

A first and second thermal insulated fluid carrying conduit joined together by means of a push-in composite coupling, comprising the combination of: a. a first and second section of fluid carrying insulated conduit each including an inner fluid carrying pipe and an outer protective pipe spaced apart from each other and having therebetween intermediate thermal insulating insulation sUbstantially along their common lengths, and a terminal end of the first of said section of insulated conduit being joined to a terminal end of the second of said section of insulated conduit by means of a push-in composite coupling which provides a male type linkage on one end of the said first section of insulated conduit by means of a for cooperating union in a slip joint with a female type linkage on one end of said second section of insulated conduit; b. said male linkage of the composite coupling on a terminal end of the first section of insulated conduit comprising:

Claim 26

The first and second sections of thermal insuLated fluid carrying conduits joined together by means of a push-in composite coupling of claim 14, wherein the elastic annular end cap seal superimposed over substantial portions of the outer surface of said lock block surrounding the tubular sealing sleeve extends over the outer peripheral surface of the said lock block including the said exteriorly projecting annular flange conforming to its contour and continues into the interior of the outer protective pipe of the first sections section of insulated fluid carrying conduit intermediate the said outer protective pipe and the said lock block inserted therein thereby forming a seal between said components.

Claim 27

The first and second section of thermal insulated fluid carrying conduit joined together by means of a push-in composite coupling of claim 15, wherein the elastic end cap seal is provided with at least one annular sealing lip about its periphery to form a seal with the outer peri protective pipe of the second section of fluid carrying insulated conduit.

Claim 28

The first and second section of thermal insulated fluid carrying conduits joined together by means of a push-in composite coupling of claim 16, wherein the tubular sealing sleeve of the assembly has an interiorly projecting annular flange about its inner surface located approximately intermediate its length to provide a stop for the pipe inserted therein.

Claim 29

The first and second section of thermal insulated fluid carrying conduits joined together by means of a push-in composite coupling of claim 17, wherein the lock block of rigid high temperature insulating body of the composite coupling is constructed in two semicylindrical sections to facilitate assembly.

Claim 30

The first and second section of thermal insulated fluid carrying conduits joined together by means of a push-in composite coupling of claim 18, wherein the tubular sealing sleeve of the composite coupling has two pair of seals positioned within its inner surface with two sealing rings in parallel located inwardly from each end thereof and each pair in combination with the tubular sleeve recedes in sealing relationship the terminal ends of the fluid carrying pipe of the first and second sections of thermal insulated fluid carrying conduit and forms a seal therewith.