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| Number | Title | Issue Date |
| 7628176 | Pipeline stop A pipeline stop is used to temporarily plug a pipeline to allow repairs to the pipeline. The pipeline stop includes lateral sections expanded into a sealing position blocking flow through the pipeline. A central section is moved downwardly to expand the lateral sect... | 12/08/2009 |
| 7210503 | Method and device for increasing safety during pipelaying A method and device for preventing water from penetrating into the rising part/intermediate section (12) of a pipe (6) when laying the pipe (6) on or near the seabed (8) by means of a pipelay vessel (1), and where a plug (22... | 05/01/2007 |
| 7111645 | Method and apparatus for sealing high pressure tubes A plug for sealing high pressure tubes is made from a memory-shape alloy. The plug is formed having a diameter greater than the inner diameter of the tube and is shaped by cooling to its martensite finish temperature and bending its wings in opposing directions such... | 09/26/2006 |
| 7000641 | Inflatable stopping bags A method of controlling the fluid pressure of an inflatable stopping bag used to block the fluid flow through a fluid conduit comprises pressurising the bag using a pressure regulator which operates to regulate the pressure of the bag as a function of the instantane... | 02/21/2006 |
| 6840090 | Plumbing testing devices A plumbing testing device (10) has a pair of aligned and closed pipe sections (12 and 14) with open sides facing in opposite directions. The plumbing testing device (10) is longitudinally collapsible to facilitate removal from between pip... | 01/11/2005 |
| 6712096 | High pressure attenuator A high-pressure attenuator or accumulator includes a body defining a pressure chamber therein. An engaging wall of the body extends axially beyond an opening to the pressure chamber and defines a sealing chamber therein. A seal head positioned within the sealing cha... | 03/30/2004 |
| 6688336 | Sealing terminal for tubular duct A sealing terminal for an installations duct of tubular shape is provided. The sealing terminal includes a plug having a threaded frustoconical part which can be screwed into one end of the duct, a manipulating head with a peripheral shoulder in a continu... | 02/10/2004 |
| 6568429 | Pipe sealing apparatus A pipe sealing apparatus insertable inside a pipe and inflatable therein to prevent fluid flow and backflow through a defined section of pipe. The pipe sealing apparatus has a first inflatable plug at a first end and a second inflatable plug at a second e... | 05/27/2003 |
| 6446669 | Pipe sealing apparatus A pipe sealing apparatus insertable inside a pipe and inflatable therein to prevent fluid flow and backflow through a defined section of pipe. The pipe sealing apparatus has a first inflatable plug at a first end and a second inflatable plug at a second e... | 09/10/2002 |
| 6244301 | Bulkhead barrier member A bulkhead barrier member for separating a tubular member into chamber sections is described. The barrier member has a diameter between about 0.001 to 0.005 inches less than the diameter of the inner surface of the tubular member when positioned within th... | 06/12/2001 |
| 6161507 | Tube protection devices and methods A tube protector device includes a first cap member, the first cap member being configured to fit over and substantially seal a first end of a tube; a second cap member, the second cap member being configured to fit over and substantially seal a second en... | 12/19/2000 |
| 5967189 | Protective cap for a fiberoptic cable A protective cap has a hollow tubular cable clamp, a spacer integrally formed with and extending from mid-portion of the tubular cable clamp, a "T" shaped extension integrally formed on the free end of the spacer and two tubular caps respectively integral... | 10/19/1999 |
| 5439032 | Inflatable gas pipeline stopper with dual air bag An inflatable gas pipeline stopper is provided for stopping gas from flowing through a broken gas pipeline while effecting repairs of the gas pipeline. The invention includes an elongated cylindrical stopper housing for attachment to a gas pipeline in an ... | 08/08/1995 |
| 5368671 | Paper tube for photosensitive materials A paper tube consisting essentially of one or a plurality of paper tapes formed into a tube and a blend adhesive comprising two or more aqueous adhesives different in their concentrations adhering the paper tapes, its production and a package using it. In... | 11/29/1994 |
| 5318075 | Drip stop plug A water soluble drip stop plug for stopping water flow in a pipe and for dissolving after a predetermined time after water flow is restored. The plug is a cup shaped water soluble plug which has tapered sides to fit snugly into the inside diameter of pipe... | 06/07/1994 |
| 5297187 | Pressure vessel penetration sealing device A device for sealing a penetration in a pressurizer of a nuclear steam supply system includes a hollow cylinder adapted to be inserted into the heater sleeve, in place of the heater. The cylinder includes a nose portion formed with a number of axially ext... | 03/22/1994 |
| 5038830 | Pipe and sealing device A weld-free all purpose seal for closed fluid systems is disclosed. This sealing device includes a ring body having a flanged top member for coupling to a pipe with a first plurality of apertures in spaced relationship therethrough. The ring body is reces... | 08/13/1991 |
| 5016674 | Rod plug caps The present invention relates to rod plug caps for leaky tubes of a heat exchanger. The rod plug caps include a frustrum shaped tapered hollow plug having a top, a length, and a diameter. The diameter of the top being the widest of the plug. A plug nut is... | 05/21/1991 |
| 4936378 | Apparatus for stabilizing a tube of a heat exchanger Closure plugs have heretofore been required in an apparatus for stabilizing an unstable tube of a heat exchanger with a weakened wall region, in addition to providing a stabilizer. Furthermore, differing inside diameters can often not be bridged with the ... | 06/26/1990 |
| 4848734 | Line puller method and apparatus An improved apparatus for directly pulling lines along an extended length of pipe comprising: a projectile positionable within a pipe, the projectile including a shaft having resilient plates and peripheral washers and also having an eye at its trailing e... | 07/18/1989 |
| 4774383 | Water tight seals for electronics package Sealing assemblies (16, 18, 20) are disclosed for isolating electronic circuitry (14) within a magnetometer (12) from the effects of water intrusion when the magnetometer is used under water. The electronic circuitry (14) is positioned within an inner cyl... | 09/27/1988 |
| 4711470 | Utility connection bar A utility connection bar (30) dimensioned to extend between a gas supply line (42) and a customer gas line (44) of a conventional gas connection (41) is formed of molded plastic and has a bar (36) extending between threaded ends (32) and (34). The plastic... | 12/08/1987 |
| 4590991 | Flexible stabilizer for degraded heat exchanger tubing A flexible vibration stabilizer and method for reducing vibration in a tube in a shell and tube heat exchanger wherein the stabilizer is an elongated flexible cable or chain which may have a plurality of rigid members loosely or fixedly mounted thereon. A... | 05/27/1986 |
| 4526275 | Transmission sealing apparatus A seal kit for preventing the loss of transmission fluid when servicing and/or storing an automatic transmission includes first and second plugs and a retaining strap. The first plug seals the aperture which normally receives the transmission's dipstick. ... | 07/02/1985 |
| 4462430 | Pipe plugging device A plugging device for machining operations having a pair of flexible, concavo-convex disks coaxially mounted in spaced relation on a central support mandrel and seated in circumferential grooves thereon, the convex side of each disk normally facing the ma... | 07/31/1984 |
| 4438783 | Protective device for pipes A device that protects the inner surface of pipes from rust is disclosed. This device is especially useful for pipes provided with threading and a thread guard at their threaded ends to form an airtight seal. The device comprises a holder that can be inse... | 03/27/1984 |
| 4314577 | Installation, hydrostatic testing, repair and modification of large diameter fluid transmission lines Method and apparatus for installing and testing new pipelines or for testing, repairing or modifying existing pipelines without purging products from the line are disclosed. The method is carried out by selectively sealing the pipeline to prevent the flow... | 02/09/1982 |
| 4149566 | Elastomeric test cup for tubing pressure testing A test cup for pressure testing tubing comprising an elastomeric sleeve having a belled end, and further including an axially extending tubular portion positioned concentrically within the belled end and defining therewith a fluid-receiving cavity. The tu... | 04/17/1979 |
