| Patents for F16L 55 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems (25,887) |
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| 07/09/1991 | US5029905 Coupling apparatus for repairing asbestos cement pipe |
| 07/09/1991 | US5029615 Method for lining a pipe laid in the ground |
| 07/09/1991 | US5029614 Tandem seal system for testing pipelines |
| 07/04/1991 | DE4000027A1 Compensator for pipe temperature and pressure fluctuations - uses compression diaphragms fitted inside pipes |
| 07/04/1991 | DE3943078A1 Link holder for air or gas ducts - has insert strips with protruding transverse ribs between opposite duct walls |
| 07/03/1991 | EP0435588A2 Air intake duct and method for making same |
| 07/03/1991 | EP0434835A1 Method of inserting rigid plastic lining tube into conduit |
| 07/03/1991 | EP0282588B1 Device for boring lining of pipe line |
| 07/02/1991 | US5028020 Pipe clip |
| 07/02/1991 | US5027895 Expandable packer apparatus |
| 07/02/1991 | US5027862 Hose repair connector apparatus |
| 07/02/1991 | US5027861 Flow control fitting enabling high flow rates |
| 07/02/1991 | US5027859 Apparatus for supporting diaphragm of accumulator |
| 07/02/1991 | US5027845 Coupling with heat fusible actuator member |
| 07/02/1991 | US5027507 Method for controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear generator |
| 07/02/1991 | US5027466 Portable receiver for pipeline pigs |
| 07/02/1991 | CA1285500C Coupler cover apparatus |
| 06/28/1991 | CA2006819A1 Process and device for lining a pipe, in particular a sewer pipe |
| 06/27/1991 | WO1991009214A1 Attenuation of dynamic pressure fluctuations in ducts |
| 06/27/1991 | DE3942934A1 Underground pipeline replacing rig - is dragged through old pipe and shatters old pipe via shaped head |
| 06/26/1991 | EP0434106A1 Fixing method for a flow director |
| 06/26/1991 | EP0433333A1 Constructional member and method. |
| 06/26/1991 | CN2079700U Quality tester for joint of moving pressure pipeline |
| 06/25/1991 | US5026019 One-piece slidable hose clamp |
| 06/25/1991 | US5025670 Means for introducing inspection equipment in active pipelines |
| 06/20/1991 | DE4040539A1 Sound-proof fixing for air duct - consists of threaded rod screwed to bearer with nut and rubber buffer and metal washer |
| 06/20/1991 | DE4031741A1 Repair and renovation of sewage pipe - by applying sealing liq. at high pressure to inside surface |
| 06/18/1991 | US5023990 Device and method for removably retaining components in a smooth bore |
| 06/18/1991 | CA1284972C Breakaway swivel coupling |
| 06/15/1991 | CA2005623A1 Internal pipe repair sleeve and liner |
| 06/12/1991 | EP0432013A1 Pipe connector fitted with a leak draining device |
| 06/12/1991 | EP0430936A1 Method and apparatus for internally lining a duct |
| 06/11/1991 | US5022684 BNB clamp |
| 06/11/1991 | US5022438 Fluids rate of flow saving or limiting device |
| 06/11/1991 | US5022437 Hollow plug for blocking a heat exchanger tube |
| 06/07/1991 | CA2030628A1 Pumpable cement grout |
| 06/05/1991 | EP0430223A1 Water hammer absorbent |
| 06/05/1991 | EP0430117A1 Apparatus and method for laying and positioning a pipe in an existing conduit |
| 06/05/1991 | CN2078410U Multi-purpose leak stoppage gun with quick injection of gelatin |
| 06/04/1991 | US5020864 Braking system for vehicle |
| 06/04/1991 | US5020644 Auxiliary mass damper for slender flexible element subject to vibration |
| 06/04/1991 | US5020572 Sealing a rupture |
| 06/04/1991 | US5020565 Water hammer absorber |
| 06/04/1991 | US5020188 Duct cleaning apparatus |
| 06/02/1991 | WO1991008417A1 Remotely controlled installation of linings in inaccessible sewer-pipe junctions and discharge entries |
| 06/02/1991 | CA2045689A1 Remotely controlled installation of linings in inaccessible sewer-pipe junctions and discharge entries |
| 05/29/1991 | EP0429267A1 Tube plug and method for plugging a tubular member |
| 05/29/1991 | EP0334870B1 A method of and apparatus for lining pipes |
| 05/29/1991 | DE4035434A1 Sound proof fixture for laying pipes - consists of clamp support with pipe clamp, frame and support arms |
| 05/29/1991 | DE3938765A1 Drainage pipe renewal process - uses driving tube surrounding old pipe and fitted with guide body |
| 05/29/1991 | CN1051783A Method of lining installed pipework |
| 05/28/1991 | US5019417 Pipe lining system |
| 05/28/1991 | US5018554 Device for the damping of pumps with intermittent delivery |
| 05/28/1991 | US5018546 Fuel supply detachable coupling |
| 05/28/1991 | US5018451 Extendable pipe crawler |
| 05/23/1991 | DE3938390A1 Application for sealing material - consists of springy insertion panel pretensioned by holder with rotary pin |
| 05/22/1991 | WO1991007619A1 Thermoplastic saddle in two parts for repairing or renovating a pipeline with branch pipe and repaired or renovated pipe with a saddle |
| 05/22/1991 | EP0428237A1 Water hammer absorber |
| 05/22/1991 | EP0427989A1 Process for closing and opening a pipe |
| 05/22/1991 | EP0427848A1 Method and device for locating branches in drains |
| 05/22/1991 | CN2077512U Contaminant-proof and removing apparatus with rare-earth and strong magnetic field |
| 05/22/1991 | CN1051615A Jet-whirl type silencing of noise method and device thereof |
| 05/22/1991 | CA2068523A1 Thermoplastic saddle in two parts for repairing or renovating a pipeline with branch pipe and repaired or renovated pipe with a saddle |
| 05/21/1991 | US5017258 Curing with substituted imidazole |
| 05/21/1991 | US5017054 Delivery line for the conveying of viscous or pasty material |
| 05/21/1991 | US5016856 Inflatable bladder for control of fluid flow |
| 05/21/1991 | US5016730 Acoustic filter having acoustic isolation of internal flow element |
| 05/17/1991 | CA2009446A1 Method and apparatus for internally coating and strengthening conduit |
| 05/16/1991 | WO1991006801A1 Method and device to enable sealed fitting of devices to a pressurized tube |
| 05/15/1991 | EP0427205A1 Method and apparatus for joining two relatively movable parts |
| 05/15/1991 | EP0426871A1 Method of repairing live pipe at joint of existing gas pipes |
| 05/15/1991 | EP0426789A1 Extensible hose for damping pressure pulses. |
| 05/15/1991 | EP0426679A1 Machining device operating within a pipe system |
| 05/14/1991 | US5014732 Fluid-joint breakaway swivel coupling |
| 05/08/1991 | EP0426123A2 Module to deal with, extend and repair undersea lines, worked by remotely operated vehicle |
| 05/08/1991 | EP0425627A1 Device for refrigerating a pipeline |
| 05/08/1991 | EP0425530A1 Closure device for drainpipes. |
| 05/08/1991 | EP0216766B1 A permanent conforming pipe for conducting fluids and the like and method for producing the same |
| 05/08/1991 | CN2076632U Glass lining device for watching fluid |
| 05/07/1991 | US5013188 Process for replacing a length of buried pipe |
| 05/07/1991 | US5012842 Fluid actuated pipe clamp tightener |
| 05/07/1991 | CA2029243A1 Method and apparatus for joining two relatively movable parts |
| 05/07/1991 | CA1283933C Recreational vehicle sewerline adapter |
| 05/02/1991 | WO1991005971A1 Method and apparatus for avoiding scaling in water conduits and in any water piping system |
| 05/02/1991 | EP0424583A1 Pipe coupling |
| 04/30/1991 | US5010913 Fluid bleed apparatus |
| 04/25/1991 | DE3935141A1 Closure piece for ends of pipes - consists of stopper in which plunger is inserted with cart ridge of adhesive between them |
| 04/25/1991 | DE3934980A1 Renovating buried pipe underground - involves using storage drum for plastics hose, with outlet and duct shaft |
| 04/24/1991 | EP0423640A2 Device for constructing a sealing connection between a main conduit and a side conduit with a connector |
| 04/24/1991 | CN1050842A Apparatus for lining installed pipework |
| 04/23/1991 | US5010440 Pipe liner having electrically conductive wires for hardening and electrostatic build-up prevention |
| 04/23/1991 | US5009376 Seizure-fixing device of pipe by clamp member |
| 04/18/1991 | WO1991005159A1 Device in a fuel system for an internal combustion engine |
| 04/16/1991 | US5007666 Tongue and groove snap-fit pipe coupling |
| 04/16/1991 | US5007461 Blowing compressed air and abrasive particles through conduits, blowing self-setting resin to coat interiors |
| 04/16/1991 | US5007460 Adjustable nozzle dam assembly and method of installing same |
| 04/16/1991 | CA1283022C Safety closure member |
| 04/11/1991 | DE3932300A1 Connection between throttle tube and crankcase - incorporates press-fit pipe with swaged ridges |
| 04/11/1991 | DE3931616A1 Verfahren und einrichtung zum sanieren von abwasserkanaelen Method and device for clean up of abwasserkanaelen |
| 04/10/1991 | EP0420959A1 Method of repairing a pipeline and apparatus for use in such a method. |