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WO/1989/007516A1 |
The above process involves heating the thermoplastic, forming a blank by means of a possibly annular nozzle and separation thereof by possible use of a heated gas stream surrounding the nozzle and oriented towards the point of separation...
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WO/1989/004757A1 |
A method of making a repeatedly inflatable and deflatable structure is disclosed wherein an inner envelope (3) of gas impermeable material is at least partially surrounded by a shell (1) of reinforcing material, and adhesive (15/15a) is ...
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WO/1989/002361A1 |
When tubular bodies are to be used in telescopic hydraulic systems, strict requirements as to surface smoothness and accurate dimensions are made. Such a tubular body of fiber reinforced plastic material may be made from a tubular blank ...
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WO/1989/000917A1 |
A fibre reinforced tube element and a method for its manufacture, provided with a wall constructed of a reinforcement layer (2) helically and partially overlappingly wound around a longitudinal axis of the tube element (1), which layer c...
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WO/1988/006089A2 |
For continuous manufacture, by extrusion, of a tube provided with spiral threads, a single traction device (6) is used. This device includes two prehensile devices (26) supported rotationally, with respect to the axis of the tube blank e...
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WO/1988/002637A2 |
Fluid feed apparatus principally for medical use in which a reservoir supplies fluid to a thick-walled narrow-bore flexible tube (8) whose length and bore (10) are selected in accordance with the desired rate of fluid flow. Means are pro...
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WO/1988/000668A1 |
Polyethylene pipe with integrated electric resistance thermowelding system, including a substantially cylindrical socket (3) at one of its ends and a wire coil resistor (4) housed therein, the axial length of which does not exceed that o...
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WO/1988/000129A1 |
The method of and means for reinforcing a structure formed by interengaging the edges of ribbed strip means (1) formed of a plastics material to form a helically wound tube or a panel, the strip means (1) comprising a plurality of ribs (...
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WO/1987/005257A1 |
A method of making annular polymer articles provides for placing a blank on a cylindrical forming surface, dividing it, along the perimeter, into even and odd sections and pressing the blank in two stages, during the first of which the e...
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WO/1987/004113A1 |
The apparatus comprises a core (8, 9, 10) positioned on the central axis thereof and around which a plasticized material is pressed from anozzle (11). A kernel (10) having a substantially constant diameter is positioned at the terminal e...
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WO/1987/001650A1 |
A base layer (12) of fabric sheets impregnated with bonding material is deposited on a mold form (20). A plurality of parallel spaced hollow cores (22), fabricated from memory metal alloy, are positioned on the base layer (12). An overly...
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WO/1987/001069A1 |
Structural tubular element (1) made of curable resin-coated resistant fibres and intended to form a part of a structure. According to the invention, said tubular element is characterized in that it comprises an internal axial wall (4) wh...
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WO/1986/006578A1 |
The hose for the irrigation of plants comprises an inner pipe (1) provided with perforations (5) of substantially circular cross-section, at the outer surface of which are arranged one or a plurality of layers (2a, 2b) of fibrous materia...
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WO/1986/005440A1 |
The cross-linked plastic material is shaped in a softened state (e.g., through blow-moulding, deep-drawing, pressing, rolling, calendering or stretching) and cooled to below the softening range, retaining the shape thus obtained.
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WO/1986/005570A1 |
Method in manufacturing a heat insulated tube comprising a tube (17) for conducting fluid and a sheath (12) enclosing said tube, a heat insulating material (15) being disposed between the fluid tube and the sheath. The sheath is being ex...
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WO/1986/005436A1 |
A fiber-reinforced plastic pipe and a centrifugal casting method for the preparation therof, in which the pipe wall contains filler and reinforcing fibers; in the preparation, at both pipe ends on the outer side of the pipe wall, a lug h...
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WO/1986/002883A1 |
Layered fabric (5), substantially liquid impervious, comprising a filamentary substrate layer (3), and outer plastics layer (4) being preferably extrusion melt coated low density polyethylene (LDPE) and a separately extruded inner plasti...
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WO/1986/002193A1 |
A disc protecting cover which prevents a disc used as an information recording medium from being damaged while the disc is not in use. This cover has a central hole, a flat portion (11; 11A) extending around the central hole, provided wi...
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WO/1986/002037A1 |
Bellows rubber hose having all the outer peripheral surface thereof constituted by a smooth surface and a method of manufacturing the bellows rubber hose. A typical conventional bellows rubber hose can be manufactured only by a split-mol...
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WO/1985/004572A1 |
A container (20) having a semi-rigid or rigid outer shell (22) and a co-extensive flexible inner liner (24) which is weakly or temporarily adhered to the shell (22) to permit more convenient manufacturing of the container (20) and yet is...
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WO/1985/003902A1 |
A process or method for making a unique, double walled, tubular device which is divided into a plurality of substantially vertically extending compartments (42) which are adapted to be filled with water. The double walled, tubular device...
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WO/1985/003906A1 |
A method in the manufacture of a body of fibre-reinforced plastics material by winding a material strip comprising the plastics material and having fibers bound thereto in several layers around a core and bonding respective superposed la...
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WO/1985/003194A1 |
A mixture of crumb rubber, binder, such as polyethylene, and slip contact agent, such as talc, and lubricant, such as a metal stearate, is formed in a blender (10), is shaped into pellets (32) by extruding a strand of the mixture (26) in...
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WO/1985/002144A1 |
Single-wall pipe, tube or like conduit (9, 44) having smooth inner surfaces and a mechanical-strength enhancing pattern of walls, flanges or ridges on the outer surface thereof, the conduit being made of plastics or like extrudable mater...
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WO/1985/001244A1 |
An extruder assembly (1) for extruding round, cylindrical plastic pipe having a smooth inner pipe wall and a ribbed or ridged outer pipe wall, comprising a feed screw (2) for transporting and softening the plastic material (4), and an an...
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WO/1985/000140A1 |
A method and apparatus is provided for manufacturing a reinforced elastomeric hose. Other reinforced hoses are prepared in individual stations for particular parts of the reinforced hose consequently requiring large amounts of manufactur...
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WO/1984/001988A1 |
A gaseous diffusion resistant tube comprising an inner core of a heat resistant polymeric material, typically cross-linked polyethylene, protected outer layer of impact resistant material and an intermediate layer of non-metalliferous ga...
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WO/1984/001513A1 |
The device has a stem portion (21) comprising at least a first tube (22) disposed within a second tube (23) the tubes being joined at one pair of ends by a flexible member (24) covering the opening (25) of the passage (26) formed between...
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WO/1983/002423A1 |
A method for the manufacture by means of shrink-forming of a packing container of orientation-stretched laminate comprising polyester and aluminium foil, the laminate being formed to a tube (14) and subsequently being made to shrink over...
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WO/1982/004220A1 |
Method and apparatus for manufacturing a hollow fiber reinforced plastic article by improving the orientation and weaving of the wires used as reinforcing material, and continuously automating the series of forming steps using a simple p...
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WO/1982/003070A1 |
To produce capillaries (9) from materials having therapeutic properties such as for example organic thermoplastics or inorganic glasses, the method comprises the following successive steps: manufacturing of output capillaries (6') with a...
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WO/1982/001533A1 |
A laminated tubular structure (10) is obtained by a process in which a fabric sleeve (12) is applied about a tube (11) of thermoplastic polymer, following which plugs (16, 17) are inserted into the opposing ends of the liner (11). A liqu...
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WO/1982/000613A1 |
A method and apparatus for processing compressible insulation material (10) of mineral fibers in which a folding shoe (12) guides the insulation material (10) from a strip condition into a cylindrical condition and further including init...
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WO/1982/000699A1 |
A method of manufacture of an electric fusion pipe fitting comprising the steps of: forming a circumferential helical groove (6) in a tubular surface (2) of a plastic pipe fitting (1) and laying a wire (8) in the groove (6). Preferably t...
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WO1982000027A1 |
A scrap removal apparatus (35) for retrieving scrap material (32, 33) from a two-piece table (19) includes a programmed lift arm assembly (37) movable between the table (19) and scrap accumulating areas (82, 83) and has remotely actuable...
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WO/1981/003638A1 |
In a machine for covering a toroidal body with layers of elastomeric material wherein a cutting and stitching apparatus is provided for severing a scrap portion of a sheet of material (32) from a portion of the sheet that has been applie...
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WO/1981/003146A1 |
A method for forming an elastomeric tube on a core (20) wherein a core (20) is loaded into a vacuum chamber (14, 114) in a vacuum container (10, 110); an elastomeric sheet (36) is placed thereover and sealed around the edge of said conta...
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WO/1981/002135A1 |
The machine comprises a device for closing the mould (10, 110) executing a reciprocating movement and a main drive shaft (32) which is controlled by a step by step mechanism with identical feed angles, while the stop phases can be adjust...
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WO/1981/002133A1 |
Apparatus (10) for preparing a tubular parison, which is continuously extruded in an extrusion direction from an extrusion head (30), and for subsequently transferring the parison to a blow molding machine (12). The apparatus (10) provid...
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WO/1981/001679A1 |
A blow molding machine of the type for blow molding large articles such as containers of the one gallon to five gallon size from a parison in the form of an extruded plastic material tube. The machine (30) is of the rotary type and has a...
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WO/1981/000823A1 |
An assembly for extruding circular, cylindrical plastic piping, comprising an extruder (1, 2) with a feed screw (1) for transporting and softening the mass (9), and an annular nozzle with a central mandrel (4) which constitutes a circula...
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WO/1981/000079A1 |
Apparatus and method for heat tacking of elongate material or cables (32) to a tire carcass (15) on both peripheral sides of a core opening (20), spreading the elongate material or cables (32) lying over the core opening (20) so as to po...
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WO/1980/002189A1 |
The pipe for the transport of warm or hot fluids comprises an inner tubing (1) forming the transport pipe, an external protective tubing (4) and a heat insulating layer (3) disposed in between. The internal tubing (1) is made of a synthe...
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WO/1980/001196A1 |
Foldable arched conduit (A) suitable for use as drain tubing, culverts and the like. The conduit has the cross section of a parabolic arch with a flat base (D). The arched portion of the conduit comprises a pair of rigid corrugated plast...
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WO/1980/000550A1 |
A thick-walled, seamless, rigid non-porous conduit (Y) having a substantially uniform wall thikkness which is not less than about 0.5 percent of the outside diameter consisting essentially of an oriented crystalline thermoplastic polymer...
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WO/1980/000326A1 |
To obtain a hollow body cast in one piece (R) by a blowing method in a parison mould (PA) of thermoplastic material, provided with an additional piece (PG) fixed onto one of its continuous walls, such piece (PG) is maintained spaced from...
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WO/1979/001140A1 |
Two securing members (25, 35) are formed on a body (1), receiving a winding, which cooperate with two securing bodies (26, 36) to fix the wire (10) in position while it is wound or cut. To cut the wire (10), a cutting device (45) provide...
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WO/1979/001018A1 |
A body sleeve (4) obtained by widening of a pipe is arranged on a mandrel on which spaced spirals (7) of a resistance wire (6) are wound. By heating the body sleeve (4), it is fixed onto the winding. An electric current circulating in th...
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WO/1979/000752A1 |
Bearing tube for a marine propeller shaft and a method of making such a tube according to which polyacrylonitrile or other fibres (8) carrying a sticky resin (7) are wound onto a mandrel (5) and, at least at the bearing lining, wear resi...
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WO/1979/000079A1 |
Blank for pipe manufacture, intended to be wound helically so that a joint is formed between adjacent turns in the helically wound blank thereby, that a portion on the lateral edge (11) of the blank in a turn is fitted into a portion of ...
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