| Patents for F16L 57 - Protection of pipes or objects of similar shape against external or internal damage or wear (3,889) |
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| 07/15/1980 | US4212328 Wear resistant rubber hose |
| 07/08/1980 | CA1081142A1 Linked suction or pressing-bag, tube or other tubular article |
| 06/11/1980 | EP0012057A1 Connection of two pipes |
| 06/03/1980 | US4205500 Wear resistant interlocking tile |
| 05/27/1980 | US4205034 Method for making a reinforced tubular article |
| 05/20/1980 | US4204022 A terpolymer of ethylene, vinyl acetate and an a,b-acid or a mixture of ethylene-vinyl acetate copolymer and an ethylene-a,b-acid copolymer |
| 04/29/1980 | US4199853 Method of protecting a pipe |
| 04/29/1980 | CA1076466A1 Fire-safe jacket for fluid piping components |
| 04/22/1980 | US4199010 Ceramic lined conduit |
| 04/02/1980 | EP0009105A1 Plastic pipe |
| 04/01/1980 | US4195669 Method of arresting crack propagation in line pipe characterized by ductile fracture |
| 03/18/1980 | US4194031 Method of prolonging the life of a tool joint means |
| 01/01/1980 | US4181157 Fire sleeving |
| 01/01/1980 | CA1069192A Heat recoverable self-heating sealing article and method of sealing a splice therefrom |
| 12/25/1979 | US4180104 Out of contact highly geometrical crack arrestor |
| 12/25/1979 | US4180101 Device for closing-off the space defined between an inner pipe and an outer shield tube |
| 12/25/1979 | CA1068623A Crack arrestor |
| 12/11/1979 | US4178001 Pipe coupling |
| 12/04/1979 | US4176691 Apparatus for arresting propagating fractures in pipelines |
| 10/23/1979 | US4171560 Method of assembling a wear sleeve on a drill pipe assembly |
| 10/23/1979 | CA1064779A1 Coating of inorganic multicellular particles in bonding material on plastic pipe |
| 10/02/1979 | US4169906 Wear resistant coated pipe and method of making it |
| 10/02/1979 | CA1063530A1 Pipeline with reinforcing means |
| 09/04/1979 | CA1061726A1 Double-walled corrugated plastic tubes |
| 08/28/1979 | CA1061198A1 Pipe coated internally with cross linked thermosetting resin containing dispersed refractory and filler particles |
| 08/21/1979 | US4165111 Collar for gas pipelines |
| 05/29/1979 | US4156374 Pre-formed wear pads for drill stabilizers |
| 05/22/1979 | US4155530 Brake tube protector for use in vehicles |
| 04/24/1979 | CA1053175A1 Combined strengthening and corrosion protection of pipelines |
| 04/17/1979 | US4150182 Method of producing a refractory lining in a cylinder or tube and resultant article |
| 04/10/1979 | US4148127 Method of applying a bond-type crack arrestor to a pipe section of a pipeline |
| 04/03/1979 | CA1051987A1 Heat recoverable closure assembly and method |
| 03/27/1979 | US4146060 Drill pipe wear belt assembly |
| 03/20/1979 | US4145387 Method of manufacturing double-wall plastic tubing in which the outer wall has transverse corrugations and the inner wall is smooth |
| 03/13/1979 | US4144125 Rupture protection device for hollow cylindrical members such as pipes, and particularly for pipes of nuclear reactors carrying primary coolant |
| 03/13/1979 | US4143893 Clamping device |
| 03/06/1979 | US4142556 Refractory lining tuyere for metallurgical furnace |
| 02/27/1979 | US4141386 Blast joint |
| 02/06/1979 | US4137949 Carbon fiber cloth, binder, heat shrinkable plastic |
| 02/06/1979 | US4137681 Fastening device for securing wear-resistant tiles to a backing |
| 01/23/1979 | US4135741 Armored piping system |
| 01/23/1979 | CA1046959A1 Methods and apparatus for arresting propagating fractures in pipelines |
| 12/26/1978 | US4131303 Telescopic assembly for pipes for conveying fluidized materials |
| 12/26/1978 | US4131136 Roller guard for swimming pool cleaning hoses |
| 12/26/1978 | CA1045057A1 Pipeline provided with a crack/buckle arrester combined with an anode |
| 12/19/1978 | US4130300 Composite abrasion resistant pipe elbow |
| 12/05/1978 | US4128109 Pressure let-down valve assembly for handling abrasive liquids |
| 12/05/1978 | CA1043719A1 Universal dust cover for a hydraulic coupling socket |
| 11/28/1978 | CA1043325A1 Hard surfaced well tool and method of making same |
| 11/14/1978 | US4125367 Metaphenylenediamines and dyeing compositions containing the same |
| 10/24/1978 | US4122436 Installation for the protection of a line |
| 10/03/1978 | US4117868 Refractory lined cylindrical article |
| 09/12/1978 | US4113285 Clamping device |
| 09/05/1978 | CA1037946A1 Tool joint wear protectors |
| 08/29/1978 | CA1037395A1 Object provided with a weighting layer or mass |
| 08/15/1978 | US4106428 Safety shield for flange type coupling |
| 06/06/1978 | US4093004 Polyolefins, resistant to penetration by projectiles |
| 04/25/1978 | US4085876 Hose fitting |
| 04/18/1978 | US4085286 Heat-recoverable sealing article with self-contained heating means and method of sealing a splice therewith |
| 03/28/1978 | US4080799 Mechanical pipe end seal/alignment device |
| 02/28/1978 | US4076873 Fireproof ducts |
| 01/31/1978 | US4071641 Method for protective coating the inside of surfaces of metal tubes by vapor deposition |
| 01/10/1978 | US4068088 Underground mine equipment |
| 10/11/1977 | US4052999 Bumper wall for plasma device |
| 09/13/1977 | US4048352 Method of producing a refractory lining in a cylinder or tube |
| 09/06/1977 | US4046406 Fire-safe jacket for fluid piping components |
| 08/23/1977 | US4043611 Hard surfaced well tool and method of making same |
| 08/16/1977 | US4042559 Abrasion resistant coated abrasive pipe lining sheet |
| 08/09/1977 | US4040447 Protection of pipe against damage to insulation and/or corrosion |
| 04/12/1977 | US4016908 Universal dust cover for a hydraulic coupling socket |
| 02/22/1977 | US4009063 Method of lining a pipe |
| 01/25/1977 | US4004615 Parts subject to wear in separators, cyclones, pipelines and similar apparatus |
| 01/11/1977 | US4001918 Guard retainer |
| 11/23/1976 | US3993368 Tool joint wear protectors |
| 11/16/1976 | US3992570 Cable end sealing devices |
| 11/09/1976 | US3991247 Pipe lagging cloth and composition |
| 11/09/1976 | US3990478 Combined strengthening and corrosion protection of pipelines |
| 11/02/1976 | US3989554 Composite hardfacing of air hardening steel and particles of tungsten carbide |
| 09/07/1976 | US3979142 Abrasion resisting flexible joint pipe |
| 07/20/1976 | US3970333 Extension compensation and explosion protection device |
| 07/06/1976 | US3967651 Adhesives coatings and laminates utilizing ethylene copolymers and coal-tar pitch |
| 05/25/1976 | US3958606 Method and apparatus for eliminating air flow in communications cables to assist in plug formation |
| 05/18/1976 | US3957084 Device for carrying flexible cables or pipes from a fixed connection point to a mobile consumer by means of a flexible tube |
| 04/20/1976 | US3951437 Construction of encased pipelines |
| 04/06/1976 | US3948294 Impact-protective coating for plastic pipe |
| 03/23/1976 | US3945962 Coating composition of flame retardant filler, latex binder and water soluble fire retardant borate |
| 03/16/1976 | US3944262 Insulated meter riser |
| 03/02/1976 | US3941531 Apparatus for applying foam coating to preformed pipe |
| 01/20/1976 | US3934066 Fire-resistant intumescent laminates |