| Patents for F16L 25 - Construction or details of pipe joints not provided for in, or of interest apart from, groups (6,088) |
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| 08/07/1991 | EP0439580A1 Pipe joint. |
| 08/06/1991 | USH945 Connecting apparatus for two tubular members |
| 08/06/1991 | US5037143 Hose construction, coupling therefor and methods of making the same |
| 07/30/1991 | CA1287080C Connector means for use on oil and gas well tubing or the like |
| 07/30/1991 | CA1287077C Device for making a sealed connection |
| 07/25/1991 | DE4040638A1 Frame tube connection - uses locking body on tube end to engage with clamping sleeve |
| 07/16/1991 | CA1286335C Pipe coupling for refrigerant fluid pipes |
| 06/27/1991 | DE3942030A1 Drill tube with end coupler(s) - has for transfer elements with releasably coupled lower bolt link ring with peripheral claws |
| 06/25/1991 | US5026200 Releasable connector |
| 06/20/1991 | DE3941247A1 Chimney lining made from refractory tubes - which are joined end to end with graphite joint rings between tubes |
| 06/12/1991 | EP0431115A1 Connector for a hydraulic pressure hose. |
| 06/11/1991 | US5022864 Equipment for delivering a fluid |
| 05/29/1991 | DE3939052A1 Co-extruded plastic waste water pipe |
| 05/14/1991 | US5015013 Connector fitting for connecting corrugated conduit sections |
| 05/08/1991 | EP0425634A1 Connection device between the body and the mouth-piece of a vacuum pipette |
| 05/08/1991 | DE3936928A1 Electropneumatic two=part plug connector - establishes pneumatic line connection simultaneously with assembly of pin and socket electrical coupling |
| 05/07/1991 | CA1283936C Recreational vehicle discharge pipe adapter |
| 05/07/1991 | CA1283935C Flexible pipe coupler |
| 05/07/1991 | CA1283933C Recreational vehicle sewerline adapter |
| 05/02/1991 | EP0425412A2 Process and apparatus for handling time consuming and reusable queries in an object oriented database management system |
| 04/11/1991 | DE3931528A1 Safety tube for hydraulic connection of household appliances - an electric cable reaches a magnetic valve via an outlet in a sleeve on the outer flex. hose and the outlet is filled with a sealant |
| 04/03/1991 | CN1050434A 管接头 Fittings |
| 04/02/1991 | US5004274 Snap ring joint assembly |
| 03/26/1991 | US5002314 Locking assembly for push-on fittings |
| 03/20/1991 | EP0417876A1 Pipe element for assembling a canal |
| 03/16/1991 | WO1991004434A1 Hose construction, coupling therefor and methods of making the same |
| 03/06/1991 | EP0415260A1 Heating and/or boiler distributor |
| 03/06/1991 | EP0415012A2 Pipe connection |
| 03/05/1991 | CA1281051C Oilwell tubing connection |
| 02/27/1991 | EP0414500A1 Moulded plastics pipe connector |
| 02/26/1991 | US4995832 Connector for connecting to helically corrugated conduit |
| 02/26/1991 | US4995648 For air conditioning ducting |
| 02/23/1991 | WO1991002918A1 Pipe joint |
| 02/20/1991 | CN1011736B Tubular article |
| 02/19/1991 | US4993260 Universal expansion connection and integral lock |
| 02/13/1991 | EP0412208A2 Pipe coupling |
| 02/12/1991 | US4991876 Connector assembly for hot water heaters and other appliances |
| 02/05/1991 | US4989905 Fitting for corrugated tubing |
| 01/14/1991 | CA2011914A1 Pipe coupling |
| 01/10/1991 | WO1991000468A1 Connector for a hydraulic pressure hose |
| 01/08/1991 | US4982549 Method for end to end coupling prefabricated elements of reinforced concrete |
| 01/02/1991 | EP0405951A1 A releasable connector |
| 01/02/1991 | EP0405163A1 Plastic piping for ducting reconstruction |
| 01/02/1991 | CN2068633U Air-duct without flange connection |
| 12/28/1990 | CA2019405A1 Plastic pipe for sewer pipe reconstruction |
| 12/27/1990 | WO1990015950A1 Arrangement in a drainage system |
| 12/20/1990 | DE4018768A1 Pressure-tight coupling nut for corrugated plastics hoses |
| 12/19/1990 | EP0402843A2 Pressure sealed threaded connection for corrugated hoses, especially made of plastics |
| 12/12/1990 | EP0402281A1 Connecting element for corrugated tubes |
| 12/11/1990 | US4976289 Corrugated pipe |
| 12/11/1990 | CA1277691C Coded coupling |
| 12/04/1990 | US4974880 Reduction bushings in the casing of production and injection wells |
| 11/15/1990 | WO1990013768A1 A pressure pipeline having its parts interconnected with socket-and-spigot joints and use of a ribbed pipe |
| 11/15/1990 | DE3915752A1 Pipe connection with outer attachment - has seal insert with clamping claw and jaws, and lugs, levers and tension pieces |
| 11/13/1990 | US4969670 Large diameter corrugated plastic pipe |
| 11/01/1990 | WO1990012977A1 Connection device between the body and the mouth-piece of a vacuum pipette |
| 10/17/1990 | EP0322508B1 Pipe joint element |
| 10/11/1990 | DE3910775A1 In-pipe reduction |
| 10/03/1990 | EP0390746A2 Demountable sealing connection between one or more plastic pipes and a joining piece |
| 10/03/1990 | EP0390504A1 Coupling arrangements |
| 10/02/1990 | US4960296 Galvanic isolator conduit fitting |
| 09/25/1990 | CA1274560A1 Duct connecting system |
| 09/18/1990 | US4957314 Conduit coupling assembly |
| 09/05/1990 | EP0385465A2 Method of making a plastic sewer |
| 09/04/1990 | US4953899 Clamp assembly |
| 09/04/1990 | US4953636 Electrical conductor arrangements for pipe system |
| 08/29/1990 | EP0384554A1 Segmental tubular connectors |
| 08/28/1990 | US4951371 Method of manufacturing a laminated fitting for a heat exchanger |
| 08/21/1990 | CA2007370A1 Segmental tubular connectors |
| 08/16/1990 | EP0382606A1 Closing ring for corrugated conduits |
| 08/16/1990 | EP0381981A1 Connecting device for circumferentially ribbed pipes or hoses |
| 08/16/1990 | EP0381979A2 Connection accouterments for circumferentially corrugated hoses or pipes |
| 08/14/1990 | US4948177 Laminated fitting for heat exchanger |
| 08/09/1990 | DE3903353A1 Connection fitting for circumferentially ribbed pipes or hoses |
| 08/07/1990 | US4946206 Bidirectional corrugated pipe-rib seal |
| 08/07/1990 | CA1272499A1 Connector for corrugated tubing |
| 08/02/1990 | DE3906752C1 Plastic pipe, in particular for sewage |
| 08/01/1990 | CN1009027B Tight connecting attachment for two rigid pipes |
| 07/26/1990 | CA2003623A1 Universal hose connector |
| 07/17/1990 | US4941693 Connector for air ducts |
| 07/12/1990 | WO1990007671A1 Pipe coupling |
| 07/04/1990 | EP0376691A1 Hose fixture device |
| 07/03/1990 | CA1271208A1 Adaptor for connecting tubular members in an exhaust system |
| 06/27/1990 | EP0374667A1 Process and installaton for making a composite pipe in a rotating mould |
| 06/26/1990 | CA1270771A1 Filtering device for vehicle exhaust |
| 06/23/1990 | CA2006518A1 Method and apparatus for producing a composite pipe in a rotating drum |
| 06/13/1990 | EP0372604A2 Connector for devices designed to be fitted onto conduits in a pressurized fluid system |
| 06/06/1990 | CN1042759A Transition duct for centrifugal fan |
| 06/05/1990 | CA1269817A1 Seal connection for pipes carrying molten media |
| 05/23/1990 | EP0369783A2 Transition duct for centrifugal fan |
| 05/23/1990 | EP0368850A1 Flexible pipe coupling. |
| 05/22/1990 | US4927186 Dielectric joint, particularly for metallic conduits for liquids and/gases |
| 05/08/1990 | CA1268719A1 Tubular article |
| 05/02/1990 | EP0366579A1 Combined radiator and clothes drier |
| 04/25/1990 | EP0364917A1 Quick-connection device for pipes with different diameters |
| 04/24/1990 | US4919334 Blow gun assembly |
| 04/21/1990 | CA2001105A1 Laundry heating radiator |
| 04/10/1990 | US4915425 Pipe connecting element |
| 04/03/1990 | US4913657 Coupling for fire hose with built-in communication cable |
| 03/28/1990 | EP0360483A2 Equipment for delivering a fluid |