Abstract: An electrical device, particularly a self-regulating strip heater, has improved thermal efficiency, good mechanical properties, and acceptable resistance to water penetration when an outer insulating layer is applied in a way that it penetrates the interstices of a braid surrounding the heater. Appropriate penetration may be achieved by pressure-extruding the outer jacket over the braid.

Abstract: An improvement is attained in a cable communication system of the type having communication line incorporated in the interior of a water supply hose which comprises, in combination, signal transmission cable incorporated extending in the interior of the water supply hose for the communication between a water injection nozzle and a fire-engine; a leading end coupling adapter for leading the signal transmission cable incorporated in the water supply hose to the outside for the connection to a communication exchange disposed on the part of the water injection nozzle for communication with the fire-engine and/or a transmitter for the control of the current amount of water to be supplied; and a communication exchange for mutual communication with the water injection nozzle and/or a water supply controller for the control of the current amount of water to be supplied to the nozzle disposed on the part of the fire engine to be connected operative to the signal transmission cable.

Abstract: A fuel dispensing system and method of making the same are provided, the system comprising a storage tank for the fuel and being disposed in the ground, a dispensing pump disposed above the ground, a first flexible hose construction having an inner surface and being disposed in the ground for conveying fuel from the tank to the pump, and a second flexible hose construction having opposed ends one of which is interconnected to the pump, the second hose construction being disposed above the ground for dispensing fuel from the pump into a fuel container of a transportation vehicle or the like through a nozzle interconnected to the other of the ends thereof, the second hose construction having electrical conductor structure extending therealong for dissipating static electricity from the nozzle to the pump, the first hole construction having leak detection structure for detecting leakage of the fuel therein through the inner surface thereof and for providing an electrical conductor structure therealong for dissip

Abstract: An electroconductive composite tube assembly is provided. The assembly includes a metal end member having at least one cylindrical wall. A tube main body of PTFE and having an outer circumferential surface is further provided. The outer circumferential surface of the tube main body is disposed in engagement with an inner circumferential surface of the cylindrical wall of the metal end member. An electroconductive tube formed from a heat-shrinkable resin is disposed over the cylindrical wall of the metal end member and over the outer circumferential surface of the tube main body. The electroconductive tube is heat-shrunk into laminated engagement with both the cylindrical wall of the metal end member and with the outer circumferential surface of the tube main body to enable efficient grounding of the electrostatic charges developed in the composite tube.

Abstract: A drilling system comprises a drill string (1) incorporating inbuilt tubular conductors (25), a mud supply passage, and passages for protective or other fluids. The drill string can be advanced by selectively actuable pistons (51,60) exposed to drilling mud flow, by electrically driven traction units (71,74) engaging the drill hole wall or by a linear electric motor element (82) co-operating with a drill hole casing (24), which can be moved thereby relative to the drill string. The drill bit (106) of the drill unit is driven rotatably by an electric motor (111,112) or reciprocably by a linear electric motor (125). The drill unit can be of two relatively slidable parts, with fluid pressure, which may be generated within the unit (189) axially loading the drill bit. Drilling forms can be resisted by clamps (129) clamping the unit and/or the drill string to the drill hole wall. The drilling direction can be adjusted by use of these clamps.

Abstract: In a soldering system which utilizes a fine jet of very hot gas for heating the work point the hot air may impinge directly on the work point or it may heat a soldering tip from within whereby it may be used in a more conventional mode of soldering or desoldering. A regulated flow of gas to the heater of the soldering instrument may be somewhat preheated by passing along the leads carrying the electric power to the heating element. The same supply of air may also be used to cool the handle of the handle of the soldering instrument for operator comfort and safety. The temperature of the heating element is remotely electronically controlled by a time share use of the power leads as temperature sensing and feedback.

Abstract: Provided is a flexible reinforced hose (50) having an inner core tube (2) for conveying fluids surrounded by two layers of tensioned fibrous reinforcement layer (4, 8) between which is disposed a spirally wound flexible polymeric tape (6) which is unbonded to either of the reinforcement layers and free to move relative thereto under flexing and pressure pulsing conditions and which is adapted to prevent moisture from pentrating core tube (2) from outside of hose (50). Other preferred embodiments include hose (60) in which a flexible polymeric tape (12) is applied longitudinally and hose (70) where the tape is a flexible polymeric metal composite tape (20) as well as hose (32) in which the reinforcement layers (32, 36) are oppositely helically wound.

Abstract: A fire hose containing an electrical wire therein for transmitting signals. Terminals for connecting cable ways are mounted at both ends of the wire. Therefore, when one hose containing the wire is connected to another similar hose, terminals are also connected to terminals in another hose so as to make a single cable way. The use of such a hose enables a fireman holding a nozzle of the hose to control a pump located apart from the nozzle.

Abstract: A flexible hosing for circulation of a heat transfer fluid to effect heat exchange within a concrete or other type of slab. An inner wall comprising nylon, rayon or other similar material forms an inner wall of the hosing to resist corrosive attack by the heat transfer fluid. A locator wire is embedded within the hosing for transmission of a locating signal so that the position of the hosing within the slab may be accurately determined. The wire may also serve as an electrical resistance heating element should the heat transfer fluid become frozen, or should it be desired that the heat exchange system be operated without an external boiler or other heat source.

Abstract: A pipe liner for lining an underground pipe is disclosed, which mainly consists of an electrically conductive flexible tube impregnated with a thermosetting resin, and conductive wires, and is characterized in that the thermosetting resin is hardened by means of electric heating of the electrically conductive flexible tube on which the conductive wires are laid.

Abstract: A vacuum hose/fluid line combination is provided for use with a vacuum cleaning system which includes a vacuum canister and heated fluid dispensing apparatus. The vacuum hose is devised with identical swivel cuffs at the ends thereof, each being formed with an opening in the cylindrical wall thereof and arranged to rotatably receive a flexible fluid dispensing line rotatably therethrough. The fluid line is retained within the hose and has its respective ends projecting outwardly through the openings for connection at one end to a hand tool, and at the other end to the fluid dispensing apparatus. Once connected, the vacuum hose is freely rotatable between the connection points.

Abstract: A flexible composite hose comprises an inner tube formed from a synthetic resin, an outer tube formed from a thermally shrinkable synthetic resin, having a relatively small wall thickness and carrying an adhesive on its inner peripheral surface, and a metal wire interposed spirally between the inner and outer tubes. The adhesive and the thermal shrinkage of the thermally shrinkable resin cause the inner peripheral surface of the outer tube to stick closely to the inner tube and the wire. The outer tube has a spirally corrugated outer peripheral surface defined by the wire.

Abstract: A bonding jumper is mounted on one facing surface of first and second coupling means which are threadably interconnected. The bonding jumper has a plurality of resilient detent members for bearing against the facing surface of the other coupling means to establish a redundant electrical bond between the first and second coupling means when the facing surfaces are axially drawn toward each other. A plurality of recesses is provided in the second surface for coating with the detent means to yieldably resist opposing relative rotation in the unthreading direction.

Abstract: Two components, such as a support tube and handset of a herbicide delivery lance, are interconnected in a manner which provides an electrical connection between leads in the tube and the handset respectively. Fluid communication is also provided between a flexible tube in the tube and a passage of the handset. The leads on the tube are connected to two terminal plates situated on the outer surface of the tube. These terminal plates move into positions opposite bosses on a sleeve provided on the handset when the tube is pushed into the sleeve. Screws, engaging bushes accommodated in the bosses, are then screwed into contact with the terminal plates to secure the tube in position. The screws also complete the electrical circuit between the leads. One of the components includes a valve which includes an operating member. Displacement of the operating member against the action of a spring not only opens the valve, but also actuates an electrical switch.

Abstract: An electrically conductive hose assembly for a vacuum cleaner includes a hose body having a plurality of resilient helical conductive wires and a handle assembly having a projecting hollow end portion received within the hose body. Handle assembly wires are connected to the hose body wires by terminals fitted over the wire ends and crimped thereto, and a shrink wrap insulation is secured therearound. The hollow end portion has outwardly projecting wire termination blocks defining circumferential slots for removably securing the hose body wire end portions adjacent their connection to the handle wires, and the hollow end portion includes a depressed section aligned with that connection. At least one of the hose wires is secured between the hollow end portion and an axially extending resilient arm which is supported from one end in a radially spaced relation from the hollow end portion and has an inwardly extending tab at the other end.

Abstract: An antistatic hose is provided, including an inner layer of insulation material having a cylindrical configuration; a first electrically conductive fiber spirally arranged within the inner layer; a second electrically conductive fiber longitudinally arranged within the inner layer and electrically connected to the first electrically conductive fiber at the crossing points therewith; a linear reinforcing member spirally wound around the external surface of the inner layer and adhered thereto; and a member for covering both the inner layer and the reinforcing member and adhered thereto. The antistatic hose is able to prevent a material conducted by the hose from being charged by static electricity and also to discharge the static electricity from the material. In addition, an anti-collapse characteristic is achieved by the spirally wound reinforcing member and the cover member strongly adhered to both the inner layer and the reinforcing member to prevent separation therebetween.

Abstract: A wire molded into the wall of a vacuum cleaner hose and having electrical conductivity through the vacuum cleaning system by metal to metal conduct and additionally being provided with a grounding cable connected to an external ground bar for dissipating any electrostatic charges built up in the vacuum cleaning system. The vacuum cleaning tools used with the system are at least partially fabricated of static discharging materials in order to further prevent static build-up in the vacuum cleaning system.

Abstract: A cable used with a subsoil penetrating tool which contains a plurality of tubes and hoses used to transport all operational fluids and a plurality of electrical conducting wires used to transmit power ane electrical impulses for information. A unique internal structure reduces the rotation of the cable as the tool advances and provides rigidity to the cable to allow for the transmission of compressional forces along the cable to be applied to the advancing tool.

Abstract: In known manner, a pipe system comprises a group of tubes and couplings connecting a suction station to one or more suction openings, the tubes and couplings being equipped with low voltage electric conductors for transmitting an electric stop or start signal from the station. According to the invention, the conductors equipping the tubes are in the form of strips integral with the tubes. Such strips can also equip the couplings.

Abstract: A system of wire connectors fixedly secured to a tubular hydraulic brake hose member in a vehicular assembly. In a preferred form, the connectors are uniformly spaced along the tubular member, each connector having a main body portion injection molded to the tubular member. Each connector has a pair of flexible retaining tabs spaced circumferentially apart from one another and extending generally radially of the main body portion. Each pair of tabs defines a generally circular wire receiving opening of a diameter substantially equal to that of the wire member intended to be secured therein. The tabs further define a pair of flexible arms which provide snap-fittable engagement and removal of the wire member with respect to the opening.

Abstract: There is disclosed a flexible hose for supplying air to persons wearing diving suits or the like protecting garments and working in dangerous water or air environments, including data communication lines for transmitting and receiving voice and measurement data. The flexible hose comprises a tube like element in the wall of which there is embedded a metal coil thereon there are wound electric or telephonic cables which are embedded in a rubber layer and encompassed by an antitearing fabric layer and an antiabrasive rubber outer layer.

Abstract: A telemetry system for borehole drilling comprises an effectively continuous length of hardwire cable which extends along a drill string located in a borehole between electrical signal control, indication equipment situated outside the borehole and probe means situated within the borehole. The effective continuous length of hardwire includes a store of hardwire constituted by a bonded wound hollow coil of hardwire located adjacent the probe means.

Abstract: A method of making a tube for carrying various fluids and materials, the tube comprising from the inside to the outside a layer of impervious plastics material, a first layer of glass fibers connected to the impervious layer, a layer of electrically conducting material and a second layer of glass fibers, the three lastly named layers being impregnated with a resin polymerized through heating of the layer of electrically conducting material which may be a heating metal wire resistor.

Abstract: A plug retainer for use in a vacuum cleaner having a handle removably connected to a wand. The plug retainer is arranged to effectively preclude discharge of static electricity from the dirty suction air to the electrical conductors and interconnected plugs so as to avoid spurious operation of electrostatic discharge sensitive control structure of the vacuum cleaner, which may include microprocessor control elements. The plug retainer structure includes a locking tongue and an integral static shield extending over a substantial area between the connected male and female plugs of the control wiring.

Abstract: A flexible hose suitable for the transportation of biphasic fluids such as crude oil containing hydrogen sulphide is reinforced by steel wires of a kind having a coating of aluminium formed by applying the aluminium to the steel under a high pressure so as to bring the two metals into intimate contact.Preferably the wires are subject to a drawing operation subsequent to cladding.

Abstract: A floatable flexible line is provided with at least four air chambers which extend in the form of a one-piece extruded flexible chambered casing around the conductors. The density of the material for the chambered casing is preferably below 1 kg/dm.sup.3.

Abstract: A grip unit for a suction hose of a vacuum cleaner system defines both air and electrical connections to further components of the system such as a suction pipe, nozzle and the like. The grip unit includes a one-piece insert member which is preassembled and then inserted into a tubular member. The one-piece insert member accommodates all electrical components or accessories and, in the inserted position, this insert member defines a sealed air guide and a channel for the electrical parts. The simplified configuration substantially simplifies assembly and reduces the cost to manufacture the unit.

Abstract: The present invention pertains to an underwater seismic cable which has at least one tensile cable placed upstream in faired cross sectional arrangement. Located downstream of the tensile cable are placed other electrical, pneumatic and hydraulic cables and hoses, with the electrical cables being adjacent the tension cable.

Abstract: A vacuum cleaner includes a floor cleaning unit having a rotatable brush driven by a brush motor and a receptacle for collecting particulate matter. The floor cleaning unit is mechanically and pneumatically interconnected with the receptacle through a rigid wand and a wand handle and hose assembly. The wand handle and hose assembly includes a wand handle, disposed between the rigid wand and a flexible hose. The wand handle includes a passage through which air and particulate matter pass from the floor cleaning unit to the receptable. A corona discharge element with a roughened surface is positioned in the downstream end of the wand handle passage. A stub tube is positioned in the upstream end of the wand handle passage to connect the wand handle to the wand. A conductive strap, installed in the wand handle using a heat staking process, interconnects the stub tube and the corona discharge element.

Abstract: A coiled baffle system, primarily for conducting well treating operations, is disclosed. The baffle system preferably comprises a baffle which is inserted into a tubing within a well bore to segment the tubing into a high pressure conduit and a low pressure conduit. The baffle system of the present invention may also be provided with electrical conductors for attachment to a variety of subsurface tools or sensors.

Abstract: A vacuum cleaner includes a motor and an elongate conductive tubular member and a system for dissipating an electrostatic charge accumulated on the tubular member. In a canister vacuum cleaner, a rigid wand, mechanically and pneumatically interconnected between a wand handle and a floor cleaning unit, is electrically conductively connected to a motor in the floor cleaning unit to dissipate or drain off any electrostatic charge accumulated on the rigid wand. Furthermore, one or more corona discharge elements are disposed in the wand handle and are electrically conductively connected to the rigid wand to effect a corona discharge into the air flowing through the vacuum cleaner, thereby to dissipate the electrostatic charge accumulated on the rigid wand. In an upright vacuum cleaner, an elongate conductive tubular handle is electrically conductively connected to the motor of the upright vacuum cleaner, thereby to dissipate or drain off an electrostatic charge accumulated on the handle.

Abstract: A current-carrying flexible hose having at least two parallel helical support wires, inner and outer plastic strips wrapped helically about the support wires, and at least one pair of helical electrical conductors disposed on opposite sides of one of the support wires and slidably positioned between the inner and outer plastic strips. Each of the helical electrical conductors comprises a conductive element and a plastic dielectric coating disposed around the conductive element. The plastic dielectric coatings are not bonded to the inner and outer plastic strips so that they may slide therebetween.

Abstract: A sanitary system for thermostatically controlled supply of hot and cold water to a number of tapping locations includes a hot water storage container, piping to the tapping locations, thermostatically controlled mixing valves and tapping faucets or valves. The thermostatically controlled mixing valves are located at the water heater or storage container, and a tapping valve for adjustment and control of the water quantity is mounted at each separate tapping location. One single pipe line extends from each mixing valve to the respective tapping location. The system includes a microprocessor control with a manual temperature control at each tapping location for selection of water temperature, and a thermostatically influenced control system for each of the mixing valves including a processor controlled mechanical drive for adjustment of each mixing valve in correspondence with the water temperature defined at the tapping location.

Abstract: A multi-conduit tubular having fluid conduits (30) and electrical conduits (108), with associated surface fluid (182) and electrical (186) commutators, and downhole sensors (18, 20, 290) for providing surface monitors (22) with instantaneous formation data. Each tubular (50) includes a plurality of uniform linear conduits (30) therethrough, with a gasketed seal plate (86) interposed between joined tubulars for assuring a high pressure seal between joined conduits. The seal plate (86) includes an intermediate electrical connector (126) for connecting electrical conduit connectors (116) of one tubular to another. A coupling collar (84) with uniform diameter internal coarse and fine threads (92, 94) joins the tubular ends having similar threads by differential thread action without respective tubular rotation.

Abstract: A lubrication monitoring device for heavy duty diesel engines includes a plurality of measuring receivers connected at one level to driving spaces of the engine. Each receiver is assembled of a socket part secured to the wall of the engine and enclosing a lower and upper padding of resilient material pressed together by a pressure plate fastened to the top of the socket. Opposite lateral walls of the socket are formed with cutouts for receiving a ribbon cable which is integral with lateral elongated channels connected respectively to an underpressure and overpressure pump. The upper padding is provided with a connector block carrying a plurality of fork shaped contacts and with two hollow connection pieces which upon compression of the upper padding penetrate the elastic material around the elongated channels while the fork shaped contacts penetrate the insulation of the cable wires.

Abstract: An electrically heated hose for simultaneously heating and feeding melted adhesive and pressurized air to an adhesive spraying head includes a tubular central flexible plastic core for feeding the adhesive therethrough, a resistance heating type helically wrapped around the core with adjacent turns spaced from each other and an outer layer of thermal insulation surrounding the tape and core so that a helically-shaped air passage is formed between adjacent spaced helical turns of the heating tape, the inner wall of the outer layer and the outer wall of the core. A pressurized air admitting tube is connected to one end of the helical passage and a pressurized air discharge tube is provided at the opposite end thereof for supplying the pressurized air in a preheated condition to the spraying head for atomization of the melted adhesive.

Abstract: An electrified vacuum cleaner hose adapter for electrically and mechanically interconnecting an electrified vacuum cleaner hose with an electrified vacuum cleaner wand or accessory, comprises a handle portion which includes two tubular portions set at an angle to each other, an inlet member for connecting to a vacuum cleaner hose and an outlet member for connecting to the vacuum cleaner wand or accessory. Electrical connectors are provided at each end of the handle portion of the adapter for connecting with corresponding electrical conductors of the hose and wand, respectively. An electrical wire extends between the connectors. The connectors and the electrical wire are covered by a channel-shaped member which defines a closed passage in the handle portion for enclosing the electrical connectors and wire and for serving as a manually grippable protrusion on the handle portion.

Abstract: A flexible electrically heated hose of substantially uniform construction throughout its length for transmitting hot liquid material includes a flexible polymeric tube encased within a braided metal covering and having hydraulic fitting at its opposite ends. Multiple plies of heat and electrical insulative material are helically wrapped around the braided covering and a least one electrical heating line is helically wrapped and embedded within the multiple plies. A molded plastic cuff is secured to each end of the hose and an exterior ply of corrugated polymeric tubing is provided about the exterior of the hose to prevent kinking and breaking of the hose at each hose cuff caused by severe bending forces at that location. The exterior of the corrugated tubing has annular ribs separated by annular recesses into which annular ribs on the interior of each cuff extend to secure the cuffs to the corrugated tubing.

Abstract: A reinforced cable having hauling, electrical and hydraulic lines. The cable has a substantially rectangular cross section and includes at least one internal support to protect these lines by resisting external compressive forces, and yet is bendable about one of its transverse axes for easy storage on and deployment from a drum. The internal support also protects the hauling lines from compressive forces applied longitudinally thereof by resisting radial displacement of the hauling lines. In one embodiment, the cable comprises an armor layer, a pair of engaged channels inside the armor layer, and a pair of corrugated supports inside the channels and fixedly spaced apart. The hauling lines, in the form of wire ropes, are located inside the corrugated supports, while the electrical lines are located inside the channels between the corrugated supports. The hydraulic lines can alternatively be located inside the channels between the corrugated supports, or inside the wire ropes.

Abstract: A conductive flanged fitting is set forth having a conductive liner at, along and throughout the inside surface of the conduit to conduct developed static electrical charges. A portion of the liner wraps over each end of the conduit. Grounded, conductive flanges are coupled to the ends by a conductive adhesive which conducts static charges from the liner portions to the flanges and to ground.

Abstract: A coupling mechanism for coupling a plurality of fluid and electrical lines between adjacent coupled vehicles wherein a plurality of elongated flexible fluid lines and electrical lines are grouped together to form a single elongated flexible group line with one end of the group line connected to respective fluid and electrical sources on one vehicle and the other end of the group line connected to respective fluid and electrical loads on the other vehicle through a single hybrid or combination fluid and electrical plug and socket arrangement. The plug and socket arrangement is comprised of a mounting bracket for the plug and a mounting bracket for the socket, one of which is secured to the second vehicle. The mounting brackets are adapted such that one bracket is readily hung on the other bracket and thereby automatically prealigns the plug and socket for engagement.

Abstract: An apparatus and method for spraying molten metal that is light weight, requires low maintenance and is quick and simple to operate. A feed system is provided that uses an electric motor and control system to push the electrodes to the head and to prevent system failure, by temporarily stopping the feed, upon the occurrence of the feed wires becoming shorted or welded together. A portable head is provided that employs parallel lead guides that allows complete head manipulation without electrode mismatch. An atomizing gas nozzle is also provided that permits lower air pressure and compensates for arc wander. A lead system is provided that combines into one lead the feed wire guides, current leads and the atomizing gas. The atomizing gas also becomes a cooland allowing lighter current leads for arc metal spraying.

Abstract: A crush and abrasion resistant, sealed, impervious, flexible protective jacket assembly for oil and gas wells containing a plurality of electrical and/or fluid conductors that are oriented in linear, spaced, parallel relation. A pair of elongated protective metal sheets define elongated conductor grooves. The metal sheets are joined by welding to define a plurality of elongated chambers containing one or more of the conductors. The chambers are sealed from the atmosphere and may be filled with a non-gaseous dielectric material to prevent the development of corona discharge that might cause deterioration of the protective jacket assembly. The configuration of the sheets of protective material is such that the development of corona discharge is resisted. A pair of metal longitudinal structural elements are attached at opposed sides of the protective jacket assembly and prevent damage thereto by abrasion, crushing, bending, etc.

Abstract: A side entry sub is disclosed having a stripping passage between the lower end of the sub and a recess in the sub body. A stripping element is disposed in the stripping passage to sealingly strip a logging cable as it moves into or out of the pipe string attached to the sub. A cable slot is provided in the outer part of the body and extends from a side opening to an opening in the recess. Upper and lower sheave wheels are rotatably mounted near the side opening and the recess opening operably providing a rotatable change of direction of a logging cable from outside the sub to the interior of an attached pipe string. The rotatable change of direction by rotation of the logging cable via the sheave wheels minimizes frictional resistance when it is running into or out of the pipe string.

Abstract: Improvements in protectors operative to carry and protect small diameter tubing, pipe or cables which are attached externally to oil well production tubing to control down hole devices such as safety valves, pressure and temperature sensors, electrical pumps and the like; improvements in such control line protectors which also operate to centralize the tubing string; improvements in such control line protectors useable in protecting both barelines and incapsulated lines; improvements in such line protectors which are installed over the pipe or tubing couplings.

Abstract: A control line protector for securing and protecting a control line or lines to the exterior of an oil well tubing string. The protector comprises a flexible steel strap to the ends of which a respective trunnion is attached, one of which trunnions is removably mounted. The trunnions are interconnected by two screws which may be rotated to draw the trunnions towards one another, thus tensioning the strap around a length of tubing forming part of a drill string. An axially-directed channel is formed adjacent one of the trunnions to receive a control line.

Abstract: A canister vacuum cleaner having electrical conductors extending from electrical circuitry in the canister through the connection of the suction hose thereto through electrical conductors embodied in the suction hose to electrical apparatus associated with a nozzle, such as a brush motor therein. The electrical connection between the hose end and the canister is provided by a first electrical connector mounted to the hose end, and a second electrical connector mounted to the base portion of the canister housing. Both the hose suction connector and the first electrical connector at the hose end are freely installable through a suction inlet passage formed in the cover and are then connected to a source of suction and a second electrical connector mounted in the base.

Abstract: A cable for towing air or water guns behind a seismic vessel is constructed with a reinforced air hose in the center region. The air hose (1) is a Kevlar fiber reinforced high pressure air hose with low air diffusion. Outside the hose, signal conductors are placed which are individually insulated with watertight coating and arranged substantially in a single layer of cylindrical elements (2) that are wound around the air hose (1). The interstices between the elements are filled with a water-repelling lubricant. Outside the layer of cylindrical elements (2) is a protective intermediate jacket (3) not intended primarily to have a water-sealing effect, and this is followed by tension-relieving elements (4) preferably disposed in two layers twisted in opposite directions around the intermediate jacket. An outer protective jacket (5) for the entire cable can be provided on the exterior. A cable constructed in this way provides a solution of the water-sealing problem.

Abstract: A flexible fluid coupling and electrical bonding device includes a sleeve elastomeric material and a wire mesh bonding strip having its central portion embedded between layers of the sleeve wall laminations, with extra length portions of the strip folded back within the sleeve either against or embedded in the inner surface of the sleeve so as to be clamped against and effect electrical bonding between metallic duct ends when joined by the device.

Abstract: A firehose is constructed comprising a hose containing a conductive material throughout the length of the hose with a coupling at both ends of the hose, the coupling being electrically attached to the conductive material.