Abstract: A modular exhaust tube system for directing exhaust gases from an internal combustion engine. The exhaust tube system includes first and second elongate half-shells, with each half-shell comprising an elongate thin-wall body having a substantially U-shaped cross-sectional profile with a constant sideways opening along the length of the body. The exhaust tube system also includes a center brace having dimensions which span the length and height of the sideways openings. The sideways openings of the first and second half-shells are coupled together around the center brace to form a flattened elongate exhaust tube having an inlet end and an outlet end for directing exhaust gases from the internal combustion engine. In one aspect the first and second half-shells are selected from a group of interchangeable and modular half-shells having different substantially U-shaped cross-sectional profiles that are reversible top-to-bottom and end-to-end.

Abstract: A noise reduction system for use with a DWV system to reduce the noise emitted from the DWV system when waste water flows through the DWV system. The noise reduction system includes a sleeve and a spacer. The noise reduction system is mounted on the pipes and fittings of the DWV system.

Abstract: The present invention relates to a finishing tool for a cable mold connection. The finishing tool includes a connection base, a connection cover, and a plurality of couplers. The connection base has a thickness corresponding to the base and has at least two acceptance openings. The connection cover is coupled to an upper side of the connection base and finishes a connection with a corresponding end of at least two cable molds. The couplers are each provided at an upper side of the connection base and a lower side of the connection cover. A base of a cable mold is mounted in the acceptance opening.

Abstract: Systems and methods for assembling multi-piece structural components, such as architectural columns, capitals, and bases, are disclosed. In one embodiment a column assembly is disclosed, comprising a first column portion and a second column portion. The first column portion includes a flange having a first keyed surface on which predetermined surface features are defined. The second column portion includes a second keyed surface that is configured to engage the first keyed surface. The second keyed surface includes a keying material having surface features that intermesh with the predetermined surface feature such that the first and second column portions are desirably aligned when mated. The surfaces features of the second keyed surface are defined in the keying material as a result of compressive engagement between the keying material and the predetermined surface features of the first keyed surface when the column portions are mated.

Abstract: This invention relates to a thermally insulating protection element (1) for piping, comprising a hollow body (10) with an open concavity (10A) and having a wall (11), characterized in that its wall (11) comprises at least one rigid positioning and/or support platform (16) designed to accommodate the fastening of technical equipment to be associated with the said protection element. The element is designed to not only insulate piping, but also to constitute a direct means for supporting and fastening technical equipment such as a sensing line.

Abstract: An inner casing (10) of a rotating thermal machine, in particular a steam turbine, has essentially the form of a hollow cylinder and is divided in a parting plane (20), which extends through an axis (11) of said casing, into a lower casing part (12) and an upper casing part (13), which casing parts (12, 13) are detachably connected to one another in the parting plane (20).

Abstract: A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.

Abstract: The invention relates to an insulation system for pipes, containers, ventilation ducts and like installation parts which have an outer surface temperature which periodically is below the dew point of the ambient air. The insulation system comprises a thermally insulating layer and a vapour barrier arranged on one side of the thermally insulating layer. The insulation system has a hygroscopic material which is arranged between the vapour barrier and the thermally insulating layer, which hygroscopic material is at least partially connected with the vapour barrier. A combination of the vapour barrier and the hygroscopic material is connected with the thermally insulating layer in such a manner that the hygroscopic material partially makes contact with the thermally insulating layer.

Abstract: A channel shaped extruded duct unit cooperates with an identical duct unit to form a closed duct therewith. The duct unit has at least one integral longitudinally extending attachment formation configured to hold captive relative to the duct unit a plurality of complementary clamp elements adapted to operatively encircle a composite duct and hold the two constituent duct units in their duct defining relationship. The clamp elements have a pair of cooperating integral catch formations whereby a pair of clamp elements can be clipped together to form an operatively substantially endless clamp encircling a closed duct and an integral outwardly directed circumferential terminal flange at each axial end thereof. Generally, semicircular clip units are provided to connect the terminal flanges associated with the ends of collinear duct assemblies.

Abstract: A protective sheath for a fluid-carrying tube is made from a larger tube cut into longitudinal tube segments and slice into opposed halves before being re-secured together about the fluid-carrying tube. Slip joints are preferably provided between adjoining outer tube segments.

Abstract: A rigid pipe (1) is achieved according to the invention in that half-cylinder shaped elements (2) are joined/hinged (3) to each other and where to a such chains are connected together with their concave sides in a zipper-like motion. The two half-cylindrical chains are spooled (13) up individually on each side of a housing (12). This result in a particularly rigid pipe of varying length with a wide area of use.

Abstract: A tubular manifold device for a dishwasher and associated method are provided. The manifold device defines a contiguous interior channel between opposed inlet and outlet ends. The manifold device has an inner surface defining the interior channel and an opposing outer surface, and comprises at least two discretely-formed manifold portions, each extending between and at least bisecting the opposed inlet and outlet ends of the interior channel. The at least two manifold portions are capable of cooperating via respective engagable longitudinal edges so as to form at least two joints therebetween. At least one overmold member is configured to sealingly engage the at least two manifold portions, across each of the at least two joints, such that the interior channel is fluid-tight between the inlet and outlet ends.

Abstract: A duct structure (50), includes lengths of square/rectangular duct (52) manufactured by performing spiral duct in round cross-section (51) and then transforming the round cross-section into square and rectangular cross-sections utilizing expandable die structures (58). The duct (52) may be connected together end to end by flanged connectors (54) formed from strip stock (220), that is notched at locations that correspond to the corners of the formed flange connector. The cross-sectional profile of the flanged connector is then formed by roll forming and/or bending and/or other techniques. Thereafter, the strip stock is bent at its notched locations to define the corners (230) of the flange connector (54) and then the free ends of the strip stock are fixed together.

Abstract: A duct main body is formed into a hollow tubular shape having in an interior thereof an intake passageway for introducing outside air into an internal combustion engine by connecting integrally a plurality of divided bodies such as a first divided body and a second divided body which are formed of a thermoplastic resin and has in a duct wall of the second divided body an opening which establishes a communication between the inside and outside of the intake passageway. An air-permeable member is insert molded in the second divided body in such a manner as to cover the opening. The air-permeable member has on an outer edge thereof a joining portion which is impregnated with the thermoplastic resin.

Abstract: A pipe insulation coupling for coupling adjacent facing ends of elongated cylindrical pipe insulation tubing encased around a fluid pipe includes an elongated body extending longitudinally between a first end and a second end. The elongated body includes a pair of C-shaped clam shell portion interconnected by a living hinge for pivotal movement between an open position for receiving the pipe and a closed position clamped around the pipe and insulation tubing. Each clam shell portion includes an outer tube wall and an inner tube extending longitudinally between the first and second ends and defining a channel therebetween for receiving the adjacent facing ends of the insulation tubing. A planar wall interconnects the outer tube wall and the inner tube wall midway between the ends to abut the adjacent ends of the insulation tubing.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: A bundle 11 of electric wires is contained in a protector (20) which is a tubular body formed by assembling a main body (21) and a cover (22) together, and the main body (21) and the cover (22) are fixed to each other by means of locking parts (30). On this occasion, backlash preventive locking parts 31 each having backlash preventing means (34) are arranged in at least two positions, in place of the locking parts 30 which are arranged on the main body (21) and the cover (22) at a determined interval in a longitudinal direction. As the results, backlashes of the locking parts can be eliminated by a simple structure, and a twist of the protector can be prevented.

Abstract: The split column reassembly system invention allows a split column, capitol or base to return to its intended position during its installation around a load bearing structural device. It is done through forming the pieces of the seams in order that they fit back together accurately after separation and during installation.

Abstract: A pipe construction system which utilizes a multiplicity of arcuate pipe segments 11, 12 to form a pipe section 10 and which sections are assembled together to form a length of pipe. Each segment 11, 12 has two longitudinal edges 13 of increased radial thickness and having a groove 14 formed in the circumferential direction whereby an interlocking and sealing member 15 may be located in the aligned grooves 14 of two adjacent segments 11, 12. One end of a pipe section 10 assembled from the segments defines a socket 22 for receiving a spigot 23 defined at the other end of a like section. The spigot end of each segment has a pocket 25 formed along said edge 13 but within the thickness of the major area of the segment, which pocket 25 mates with a corresponding pocket 25 of an adjacent segment whereby sealant may be disposed in the mating pockets.

Abstract: An elbow for a dryer exhaust vent conduit. The elbow can have two nestable channel sections, each channel section having a generally C-shaped cross-section, which may be substantially semi-circular. Each channel section has a connection mechanism along at least one side such that the two channel sections are joinable to form a substantially tubular conduit which has a smooth interior surface, reducing friction losses to the airflow speed of the dryer exhaust. Each channel section can be curved in a large radius arc to provide a turn to the elbow, which may extend around a quarter circle to provide a 90° turn to the dryer exhaust vent conduit. Snap fit locking tabs may lock the two channel sections together. Ends of the elbow may fit into or outside adjoining conduit pipes. The channel sections can be nested for ease of transport and storage and can be easily assembled on site.

Abstract: A covering body for heating a pipe to be attached to the pipe and to conduct external heat to heat the pipe, including: a surrounding body including at least two parts having a divided shape of a cylindrical body along an axial line of the cylindrical body, the surrounding body having: a through hole having a diameter corresponding to an outer diameter of the pipe; and a concave groove provided on an outer peripheral surface of at least one of the at least two parts and extending in a longitudinal direction of the surrounding body, a fitting member including: a first fitting plate including a first arc band-shaped plate longer than a half of circumference of an outer peripheral surface of the surrounding body and having a first extended portion and a first cutout at one end of the first arc band-shaped plate; a second fitting plate including a second arc band-shaped plate longer than the half of circumference of the outer peripheral surface of the surrounding body and having, at one end of the second arc band

Abstract: A pipeline repair system includes a sleeve adapted to permanently enclose an outer surface of a longitudinal section of a pipeline having a defect. The sleeve includes two or more longitudinal segments of a cylinder joined at the longitudinal edges to form a sleeve with a first and second radial ends. The sleeve is sealed at the radial ends forming an enclosed annular space between the pipeline and the sleeve. An injection port assembly on the sleeve is adapted for temporary connection to an external source of pressurized material. The pressurized material may be a fluid, gas, or slurry. After filling the annulus with pressurized material, the port assembly is sealed. The permanent sleeve receives a majority of the tangential (hoop) stress load from the section of pipeline via the pressurized material in the annular space and may receive a portion of the longitudinal stress load from the section of pipeline.

Abstract: There is described ducting comprising a plurality of interconnectible elongate ducting components (2, 4) which when assembled define an elongate, longitudinally extending internal channel (22) for receiving a pipe, cable or like elongate member, each ducting component having a shaped inner face (14) with a longitudinal recess (20) such that the components can be assembled with confronting inner faces (16, 18), their respective longitudinal recesses being thereby aligned to form the channel, the ducting further comprising tension bands (6) for securing assembled pairs of components to one another, wherein each ducting component is provided with a transversely extending internal cavity for receiving a tension band, the cavity having two open ends so that the band can pass through the internal cavity of one ducting component and though a corresponding internal cavity of an adjacent ducting component in order to secure one to the other, at least part of the band being thereby contained and protected within the ca

Abstract: A protector includes a main body, lids, hinges, and lock portions. The main body including a bottom wall, a first sidewall, and a second sidewall. The lids are coupled to the main body through the hinges. The lock portions are disposed between the lids and the main body. The lids are configured to cover the main body from both sides thereof. A first lid includes a closure plate at an adjacent position thereof. The closure plate protrudes from an end portion of the first lid toward an inner surface side of the second lid. The closure plate closes gap between the first and second lids. A second lid includes a misassembly prevention rib at an adjacent position thereof. The rib protrudes from an end portion of an outer surface of the second lid toward a direction away from the bottom wall.

Abstract: The present invention is directed to a concrete floor, particularly a temperable concrete floor, containing an upper side and an underside, containing first concrete-free spaces, particularly cavities, that comprise at least one first wall surface, particularly two, three, four or more wall surfaces, along at least one section, said at least one first wall surface being essentially planar, concave, convex or corrugated or denticulate and being aligned not essentially parallel or perpendicular to the underside and/or upper side of the concrete floor, and containing second concrete-free spaces, particularly second cavities, whereby the first concrete-free spaces, particularly two, three, four or a plurality of first concrete-free spaces, and the second concrete-free spaces are arranged in the concrete floor in alternating succession, at least in sections, and, in particular, connectible to one another or connected to one another, whereby said first concrete-free spaces have a larger maximum diameter in crossect

Abstract: A rotary holder for a corrugated tube is structured such that an inner rotary body containing a corrugated tube is received in an inner portion of an outer fixing body, and an outer peripheral sliding surface of the inner rotary body slides along an inner sliding surface of the outer fixing body. The outer fixing body is formed by assembling a base member and a cover each having a recessed arch surface on an inner periphery thereof. The inner sliding surface is formed by connecting a recessed arch surface of the base member to a recessed arch surface of the cover. Further, outer retracting surfaces are respectively provided to both end portions of the recessed arch surface of the base member so as to be extended to a tangential direction thereat.

Abstract: An object of the present invention is to provide an air-conditioning duct unit capable of being made compact when transported to largely reduce the cost of transport inside and outside a building as well as the cost of transportation by a truck. A duct unit A of the present invention has upper and lower wall portions 1 and 3 and right and left wall portions 2 and 4 formed of metal sheets, and spin locks curved into a curled shape, the spin locks being provided on the wall portions 1 to 4 at two side edges of the same along the longitudinal direction. One of the pair of spin locks provided on each adjacent pair of the wall portions is inserted in the other to form one of lock joints 9-1 to 9-4 rotatably. The wall portions 1 to 4 are linked so that the duct unit A can be changed in shape. Consequently, the duct unit can be folded so as to be flattened.

Abstract: A pre-formed insulation module is disclosed having a part cylinder body. The body includes an unstriated insulation layer formed of a rigid insulating material substantially uniform in composition and density over its cross section. The insulation layer has an inner surface adjacent to a surface of a component to be insulated, and an outer surface generally concentric to the inner surface. A substantially non-fibrous resilient cladding layer shaped to the body is directly adhered to the insulation layer at the outer surface. Connection means are disposed along the length of the body for connecting with a further insulation module, wherein the insulation and cladding layers of each module are brought into relative contact along the contacting surfaces of the modules to insulate a portion of the component.

Abstract: A spacer for a long substrate in the interior of a long tube, with a superinsulation material being disposed between the substrate and the tube. The spacer includes two rings (3, 4) seated on the substrate (1) and spaced apart from each other at a longitudinal axial distance, a tube section (5) supported on the rings (3, 4) and a second ring (6) disposed on the tube section (5). The first rings (3, 4), the tube section (5) and the second ring (6) are made of a material with poor thermal conductivity and high mechanical strength.

Abstract: An objective of the present invention is to provide a joint structure of a duct that can be formed easily and comprising features of the joint structure of a novel duct previously filed by the present applicant. A tip end portion of one of two plate members is bent to form an angle of 90 degrees or more, a U-shaped groove is formed at an tip end portion of the other plate member such that at least an opening portion of the groove is adapted to a bending angle of the one plate member so as to accommodate the bent tip end portion of the one plate member in an end portion of the other plate member, and the guide rail is formed by protruding at least a portion on a bottom side of the U-shaped groove of the other plate member obliquely from an outer face located on a base end side of a portion where the U-shaped groove is formed and constituting one of the wall faces of the duct.

Abstract: A spacer for a long substrate in the interior of a long tube, with a superinsulation material being disposed between the substrate and the tube. The spacer includes two rings (3, 4) seated on the substrate (1) and spaced apart from each other at a longitudinal axial distance, a tube section (5) supported on the rings (3, 4) and a second ring (6) disposed on the tube section (5). The first rings (3, 4), the tube section (5) and the second ring (6) are made of a material with poor thermal conductivity and high mechanical strength.

Abstract: A system, device and method are claimed for installing electrical switches and electrical plug connectors in a wall, without the use of junction boxes. The system uses prefabricated switch assemblies and/or receptacle assemblies. These assemblies contain either a switch or a receptacle that is manufactured into a housing. On the rear of the housing are one or two protrusions. Wire connector ports are disposed within the areas defined by the protrusions. The wire connector ports are coupled to either the switch or receptacle within the housing. To install an assembly, at least one hole is drilled into a wall and a cable run through the hole. The wires from the cable are stripped and inserted into the wire connector ports within the protrusion on the rear of the assembly. The protrusion is then inserted into the hole in the wall and the assembly is mounted flush on the face of the wall.

Abstract: A lightweight conduit for fluid conveyance, having an outer conduit portion formed of rigid insulation material, an inner conduit portion formed of rigid insulation material, the inner conduit portion having an outer surface and an inner surface and first and second ends, the inner and outer conduit portions being aligned and adhered together so that one end of the inner conduit portion protrudes outwardly beyond the corresponding end of the outer conduit portion, and the second end of the inner conduit portion is recessed into the second end of the outer conduit portion, and a resin coating is applied over the outer surface of the outer conduit portion and over the inner surface of the inner conduit portion so that the lightweight conduit is both corrosion-resistant and flame-resistant.

Abstract: A wearing ring, particularly for protecting a cable guide hose on a robot, with an inner ring and an outer ring having in each case two half-shells is characterized in that the half-shells of at least one of the rings can be locked together.

Abstract: A cover having first and second halves is used in combination with clamps to cover elongated items such as wires and pipes. The first and second halves cooperate together to form a cavity that receives the elongated items and clamps. The halves may be formed with identical cross sections so that they may be fabricated from a single mold. The halves may snap together or be connected with a fastener. Each cover half includes a pair of opposed locking ledges that form slots sized to receive the opposed feet of the clamp. The clamps are installed by angling the clamps with respect to the longitudinal axis of the cover and pressing the clamp against the base wall of the cover. The clamp is then twisted to a position substantially perpendicular to the longitudinal axis of the cover. The twisting motion simultaneously moves the feet of the clamp under the locking ledges of the clamp cover.

Abstract: A rotary holder for a corrugated tube is formed such that an inner rotary body containing a corrugated tube is received in an inner portion of an outer fixing body, and an outer peripheral sliding surface of the inner rotary body may rotate relative to the outer fixing body. The inner rotary body is formed by assembling two divided rotary members, each having a round arch surface on an outer periphery thereof. The outer peripheral sliding surface is formed by abutting a surface of each divided rotary member against each other. Further, a cut surface retracting inside from a rotation locus of the round arch surface in each divided rotary member is formed in each end portion of the round arch surface.

Abstract: A pipe construction system which utilises a multiplicity of arcuate pipe segments 11, 12 to form a pipe section 10 and which sections are assembled together to form a length of pipe. Each segment 11, 12 has two longitudinal edges 13 of increased radial thickness and having a groove 14 formed in the circumferential direction whereby an interlocking and sealing member 15 may be located in the aligned grooves 14 of two adjacent segments 11, 12. One end of a pipe section 10 assembled from the segments defines a socket 22 for receiving a spigot 23 defined at the other end of a like section. The spigot end of each segment has a pocket 25 formed along said edge 13 but within the thickness of the major area of the segment, which pocket 25 mates with a corresponding pocket 25 of an adjacent segment whereby sealant may be disposed in the mating pockets.

Abstract: A reinforced, self-closing pipe insulation device for thermally insulating long lengths of pipe has an insulation layer/panel capable of being rolled around the length of pipe to bring a first and a second longitudinal edge adjacent each other to form a tubular sleeve or sleeve encircling the outside of the pipe. The insulation sleeve is reinforced proximate its outer surface by a plurality of reinforcement strips. Each reinforcement strip is a self-coiling spring which has a straight configuration and a coiled configuration. The spring bias of the reinforcement strips cause a strip to coil along its length and coil-face when the straight configuration is deformed. The self-coiling spring reinforcement strips are disposed in a spaced pattern in a layer affixed to an outer planar surface of the insulation layer with their coil-faces directed toward the pipe being insulated and their lengths parallel to the width of the insulation layer.

Abstract: A telecommunications cable management system includes a planar base element including a planar top surface and side edges. Side elements are mounted with a mating arrangement to the base element. The side elements may include one or more of the following: upstanding wall portions, side exits extending horizontally, and downspouts. The base elements and the upstanding wall portions may have a continuous cross-section, and can be cut to the desired length for the cable management system. The downspout and side exit elements may also include multiple components wherein a central section of each can be cut to the desired width.

Abstract: A means for thermal maintenance of industrial pipe by virtue of a working medium passing through at least one prefabricated hollow element attachable to the outside surface of the pipe wall is disclosed. The hollow element comprises an outer cover defined by an inner portion, facing the external surface of the pipe wall, an outer portion, situated opposite the inner portion and facing outwardly and transition portions connecting the inner portion with the outside portion. The inner portion is provided with concave configuration defined by radius R1 and closely matching the curvature of the pipe. The inner portion encloses about 180 degrees of the pipe's external surface and the transition portions are rounded by radius r, wherein r<R1.

Abstract: The present invention provides a transitional telescoping plenum apparatus that is intended to facilitate the interconnection of HVAC equipment to duct systems. The unit expands in length, width and height directions, and is composed of modular tier sections. Each modular tier includes at least four corner sections, with each corner section being interleaved with two adjacent corner sections to complete a single modular tier. Each modular tier includes a tier-connecting flange that communicates with a tier-connecting flange on another modular tier, such that the modular tiers can be interconnected to form a finished transitional telescoping plenum apparatus. Clips are also taught for connecting modular tiers to each other.

Abstract: By attaching a base portion to a cover portion formed is an outer fixing body and in the interior of the outer fixing body a corrugated tube is rotatably received. Further, by providing a tube bend restraint portion at the end portion of the cover portion for restraining bend of the corrugated tube within the given range, a rotary holder for corrugated tube in which the range of sliding movement of the corrugated tube is defined only within the cover portion.

Abstract: The device comprises filtration means and pumping means each housed in a compact unit mounted with the panels of a swimming pool basin. The unit includes a compartment (A) housing the filtration means in communication with the water of the basin, and a compartment (B) out of the water which contains the pumping means. The unit includes in the filtration compartment an assembly having first and second 90° elbows for intaking water from the basin. One of the elbows has arrangements for coupling to the bottom of the member containing the filtration means, while the other elbow has arrangements for coupling with a straight element. The unit also includes in the pumping compartment third and fourth 90° elbows for the intake of water. One of the third and fourth elbows is coupled to a straight element, and the other elbow of the third and fourth elbows is connected to a delivery side of the pumping means. Also included in the pumping compartment are fourth and fifth elbows for delivering water to the basin.

Abstract: A means for thermal maintenance of industrial pipe by virtue of a working medium passing through at least one prefabricated hollow element attachable to the outside surface of the pipe wall is disclosed. The hollow element comprises an outer cover defined by an inner portion, facing the external surface of the pipe wall, an outer portion, situated opposite the inner portion and facing outwardly and transition portions connecting the inner portion with the outside portion. The inner portion is provided with concave configuration defined by radius R1 and closely matching the curvature of the pipe. The inner portion encloses about 180 degrees of the pipe's external surface and the transition portions are rounded by radius r, wherein r<R1.

Abstract: A modular protective sleeve for underground utilities may be pulled into an underground utility duct by using lanyards extending between two adjacent manholes through the utility duct. The modular protective sleeve may be assembled over an existing and active utility service such as electrical or telephone cables, optical cables, or gas lines, without disrupting the utility service. The protective sleeve comprises at least one bottom half-shell and two top half-shells which are interlocked on to another in such a way that they may be pulled in either direction. Once the protective sleeve is in place, the concrete casing surrounding the utility duct may be broken without danger to the utility service, after which repair or splicing to the utility can be carried out. The sleeve may then be retrieved for re-use, or left in place.

Abstract: The invention relates to a conduit for circulation of fluid comprising a sealed pipe (A) fixed to a rigid supporting body (B) comprising a horizontal base having a lower face bearing on a laying surface (C) and two lateral wings going up vertically along the sites of the lower section of the pipe (A), said supporting body (B) comprising, on either side of the tubular enclosure (A), a single-piece portion (31, 31′) having, as a transversal section, a L-shaped profile comprising a substantially vertical branch (32) forming the wing extending along the corresponding side of the enclosure (A) and a substantially horizontal branch (33) extending beneath the former in order to form at least a portion of the base (3) of the supporting body (B) resting on the ground (C).

Abstract: A modular protective sleeve for underground utilities may be pulled into an underground utility duct by using lanyards extending between two adjacent manholes through the utility duct. The modular protective sleeve may be assembled over an existing and active utility service such as electrical or telephone cables, optical cables, or gas lines, without disrupting the utility service. The protective sleeve comprises at least one bottom half-shell and two top half-shells which are interlocked on to another in such a way that they may be pulled in either direction. Once the protective sleeve is in place, the concrete casing surrounding the utility duct may be broken without danger to the utility service, after which repair or splicing to the utility can be carried out. The sleeve may then be retrieved for re-use, or left in place.

Abstract: An insulation piece for joining with a similar piece to surround a pipe elbow of a larger diameter such as greater than 9 inches outside diameter is formed by cutting from a block of the insulation material.

Abstract: A pipe insulation coupling for coupling adjacent facing ends of elongated cylindrical pipe insulation tubing encased around a fluid pipe includes an elongated body extending longitudinally between a first end and a second end. The elongated body includes a pair of C-shaped clam shell portion interconnected by a living hinge for pivotal movement between an open position for receiving the pipe and a closed position clamped around the pipe and insulation tubing. Each clam shell portion includes an outer tube wall and an inner tube extending longitudinally between the first and second ends and defining a channel therebetween for receiving the adjacent facing ends of the insulation tubing. A planar wall interconnects the outer tube wall and the inner tube wall midway between the ends to abut the adjacent ends of the insulation tubing.

Abstract: The disclosure relates to a plastic jacket having air spaces formed by spaced walls used to insulate hot and cold piping systems and the fittings for those systems. The jacket is made from multiple segments, which are joined together along their longitudinal joints. The segments are joined to each other by tongue and groove connections. One segment can be cut longitudinally and glued to another segment to make a larger segment to fit various diameters of pipe. In a further embodiment, the plastic jacket is modified to form the duct of a heating, ventilating and air conditioning system. The inner wall of the jacket forms the air duct. In both embodiments, at least some of the segments have hinge portions created by omitting the inner wall at the hinge portions.