Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16L - Pipes; Joints or fittings for pipes; Supports for pipes, cables or protective tubing; Means for thermal insulation in general › F16L 9 - Rigid pipes
Patents for F16L 9 - Rigid pipes (18,006)
07/1988
07/20/1988EP0274933A1 Assembly for an electrical connection through a conduit formed by several elements, method for its installation in the interior of this conduit
07/20/1988CN87210299U Pipe line using large diameter plastic pipe
07/19/1988US4758455 Composite fuel and vapor tube having increased heat resistance
07/19/1988US4758115 Pipeline, a method of laying the pipeline and a device for effecting said method
07/19/1988CA1239351A1 Structures reinforced by a composite material
07/12/1988CA1239243A1 Poly-1-butene resin composition
07/12/1988CA1239056A1 Composite mooring element for deep water
07/05/1988US4754781 Plastic pipe comprising an outer corrugated pipe and a smooth inner wall
06/1988
06/28/1988US4753833 Hollow article with zigzag projections
06/28/1988CA1238587A1 Metallic pipe provided with protection against corrosion and a method for the production thereof
06/21/1988US4752431 Skins filled with dry cement, rigidizing by addition of water
06/15/1988EP0270864A1 Intake manifold for an internal-combustion engine
06/08/1988EP0270347A1 Composite fuel and vapor tube having increased heat resistance
06/08/1988EP0269645A1 An air distribution duct for an air distribution system
06/07/1988CA1237683A1 Composite pipe, process for producing the same, and heat pipe using the same
06/02/1988WO1988003865A1 Method of and machine for winding tubes from strip
06/01/1988EP0268695A1 Tubular, multi-layer film and method of manufacture
05/1988
05/31/1988CA1237375A1 Pipe
05/25/1988EP0267907A1 A plastic pipe.
05/11/1988DE3638136A1 Double-walled plastic pipe and use thereof
05/10/1988US4743329 Process for manufacturing of composite pipes
05/05/1988DE3636737A1 Extruded plastic pipe
05/04/1988EP0266002A1 A method of manufacturing a tube having a smooth inner surface, and a tube obtained with that method
05/04/1988CN87105321A Fabricating helical flowline bundles
04/1988
04/26/1988US4740658 Pushing and pulling cable
04/26/1988US4739800 Multi-component tubular structure for underwater conveyance of fluids
04/26/1988CA1235666A1 Method of and means for forming and sealing helically wound tubes
04/20/1988EP0264102A1 Method of continuously manufacturing a double-walled tube assembly
04/13/1988EP0263760A1 Method for manufacturing composite tubes for the transport of various fluids
04/06/1988EP0262203A1 Fire resistant plastic pipe.
04/05/1988US4735234 Buried large cross-section conduit
03/1988
03/31/1988DE3631892A1 Underground laying pipe for cable protection and cable ducting purposes and process for producing such a pipe
03/30/1988EP0262081A1 Light weight flexible coaxial vapor recovery hose
03/30/1988EP0261343A2 Method of making profiling projections on steel objects coated with synthetic resins, and coated steel objects obtained
03/29/1988US4733699 Composite pipe, process for producing the same, and heat pipe using the same
03/17/1988DE3711869A1 Insulating arrangement for construction elements
03/15/1988CA1234095A1 Flexible drill pipe
03/10/1988WO1988001721A1 A blast pipe, preferably for use in metallurgical processes
03/08/1988US4729806 Method for making tubes having low weight
03/08/1988US4729773 Unit for degassing liquids
03/08/1988US4729409 Hexagonal underground electrical conduit
03/08/1988CA1233764A1 Insulated article
03/03/1988DE3628776A1 Protective covering for the lateral surface of a pipe and process for applying a protective covering to the lateral surface of a pipe
03/01/1988US4728224 Flexibility
02/1988
02/25/1988DE3628704A1 Pipe having inner extruded coiled web, esp. for use in pipeline
02/09/1988CA1232463A1 Method for producing hollow structures and hollow structures
02/09/1988CA1232461A2 Method for producing hollow structures and hollow structures
02/03/1988EP0255465A2 Small caliber multi-layered metal pipe
02/02/1988CA1232212A1 Process for producing a pipe section and compound pipe produced according to this process
01/1988
01/27/1988EP0254375A1 Plastic pipe part made of thermoplastic material with sound-proofing properties and a waste pipe system comprising such plastic pipe parts
01/27/1988EP0253953A2 Tubular bundle of polymeric pipes
01/26/1988CA1231883A1 Method of manufacturing a shape from a composite material and shapes manufactured in accordance with the method
01/14/1988WO1988000310A1 Self-supporting vertical pipe structure of ceramic material
12/1987
12/29/1987US4715443 Baffle system for conducting well treating operations
12/23/1987EP0250278A1 Filler and buoyancy material, method for its production and tubular constructions incorporating this material
12/22/1987US4714578 Molding of integral socket connection in centrifugally cast fiberglass reinforced pipe
12/17/1987DE3625127C1 Pipe assembly comprising polymeric pipes
12/08/1987CA1230065A1 Double-wall welded tube and method for producing said tube
12/02/1987EP0247496A2 Drive-in tube
12/01/1987US4710337 Method and apparatus for continuously extruding single-wall pipe of plastics or other mouldable material
12/01/1987US4709730 Pipe cluster unit
11/1987
11/25/1987EP0246479A1 Conformation provided with a supporting core
11/17/1987US4707203 Vulcanizing rubber hose with solvent resistant thermoplastic lining; conveying corrosive liquids
11/17/1987CA1229450A1 1-butene polymer and its use
11/17/1987CA1229313A1 Flexible corrugated rubber tubing with internal reinforcement
11/12/1987DE3619973C1 Process for producing a jacketed pipe
11/11/1987EP0245125A1 Method of manufacturing tubes of polyamid showing an improved resistance to cold shocks and tensile strength
11/11/1987EP0244890A2 Process for producing hollow structures such as ducts, silos, or shelters, and structures obtained by this process
11/04/1987EP0244154A1 Device for making pipings of thermoplastic materials
11/04/1987EP0244048A2 Composite well riser for deep water offshore structures
10/1987
10/29/1987DE3614194A1 Shaped composite part with flange connection
10/27/1987US4702282 Reinforced conventional concrete pipe having an evenly distributed steel wire reinforcement
10/22/1987DE3613140A1 Transversely deformable tube ring for tunnel tubes which can be jacked
10/21/1987EP0242157A1 Improvements in or relating to tunnel lining segments and tunnel linings formed therefrom
10/21/1987EP0242156A1 Improvements in or relating to tunnel lining segments and tunnel linings formed therefrom
10/15/1987DE3612515A1 Folded spiral-seam tube
10/14/1987CN87102576A Extrusion tubes of semicrystalline plastic and their process
10/13/1987US4699243 Vibration isolating pipe
10/13/1987CA1228034A1 Flexible hose having an end connection fitting
10/08/1987WO1987005982A1 An air distribution duct for an air distribution system
10/07/1987EP0240072A1 Fire resistant plastic pipe
10/07/1987EP0239707A1 Polyvinylidenfluoride composition having improved behaviour in the presence of hydrocarbons - application in the production of tubes for the petroleum industry
10/07/1987EP0239571A1 Multi-layer hollow body, process for its production and its application.
09/1987
09/29/1987CA1227313A2 Flexible tubing and method of manufacturing same
09/22/1987US4694865 Conduit
09/17/1987DE3608498A1 Sewer pipes
09/15/1987US4693635 Method of producing hollow structures and hollow structures
09/11/1987WO1987005376A1 Pipe for relining underground pipelines
09/10/1987DE3607260A1 Apparatus for laying pipes and pipe suitable therefor
09/09/1987EP0235959A1 Method of producing a tube assembly
09/09/1987EP0235576A2 Flexible closed tube assembly
09/03/1987DE3606420A1 Tilting joint element
09/01/1987US4690174 Plastic pipe
08/1987
08/25/1987US4688319 Multi-layer helical seam steel pipe
08/25/1987CA1225940A1 Hose incorporating a sinusoidal conductor and method for making same
08/25/1987CA1225915A1 Method of treating a pipe and product produced thereby
08/20/1987DE3616445C1 Corrosion-resistant pipe consisting of concrete/polymer composite
08/20/1987DE3605329A1 Double-walled seepage-line pipe of plastic
08/19/1987EP0232664A1 Duct unit for a plurality of network systems
08/18/1987US4687690 Method of and means for forming and sealing helically wound tubes
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