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| Number | Title | Issue Date |
| 7178418 | Segment of a sensor-supporting element for a scraper-type device Disclosed is a segment (15) of a sensor-supporting element for a scraper-type device, which comprises at least two pairs of runners (16a, 16b) that are arranged essentially parallel behind each other. A support plate (20) re... | 02/20/2007 |
| 7055580 | System for cleaning tubes of heat exchangers and cleaning bodies for use in the system In a system for cleaning tubes of tube-bundle type heat exchangers including a plurality of tubes (5) arranged in parallel between two chambers (10a, 10b) and flown through by a fluid medium, in particular crude oil, at a temperatu... | 06/06/2006 |
| 6536461 | Subsea pig launching apparatus A subsea pig launching apparatus for launching one or more pigs into a flowline which is fluidly connectable to a source of well fluid comprises at least one first hub to which the source of well fluid is connectable and which is in communication with the... | 03/25/2003 |
| 6538431 | Pipeline pigs A pipeline pig includes a central body member, a plurality of circumferentially spaced return path elements surrounding said body member and each extending axially relative to the body member, each return path element including a pair of axially spaced ma... | 03/25/2003 |
| 6438782 | Apparatus for removing material from pipelines and method of making A pig for evacuating pipelines is disclosed. The pig includes a body of a deformable material having an outer surface configured to contour to a pipeline to be evacuated. At least a portion of the deformable material is impregnated with a quantity of magn... | 08/27/2002 |
| 6276017 | Multisize bidirectional scraping device The present invention relates to a device 10 for scraping the inner walls of a pipeline. The device has (i) a flexible shaft 16 of elastomeric material, (ii) a plurality of groups of flexible radial scraping bars 14 which are spaced apart and offset angul... | 08/21/2001 |
| 6014789 | Multiple tube cleaning pig featuring replaceable disks anchoring cleaning studs The present disclosure is directed to a pig for cleaning thin wall tubes in a heat exchanger which are subjected to internal deposits which become very hard with heating during use. The pig comprises an elongate central mandrel between front and back end ... | 01/18/2000 |
| 5795402 | Apparatus and method for removal of paraffin deposits in pipeline systems An apparatus and a method for cleaning the inner wall of a pipeline, which includes providing a pig component, of the type having a pig body, a plurality of spacers around the pig body, the spacers making contact with an inner surface of the pipeline wall... | 08/18/1998 |
| 5617604 | Pivoted roller cutter pipe cleaning tool An improved pipe cleaning tool employing a cutting head and propulsor utilizes a plurality of roller cutters on the cutting head. The rolling cutters are coupled in a pairwise fashion to a rotatable car. The rotatable car in turn is pivoted to the cutting... | 04/08/1997 |
| 5263220 | Pig passage indicator mechanism incorporating a fluid seal construction A pig passage indicator is provided by the present disclosure and includes an elongate cylindrical hollow body having a sleeve which threads only inside the body. The sleeve captures a moveable pin or rod and a compressed resilient coil spring. The coil s... | 11/23/1993 |
| 5103524 | Apparatus for cleaning the inner surfaces of tubes in operating multi-tube heat transfer devices Apparatus for cleaning tubes in an array of such tubes (162, 175) such as heat exchanger or condenser units that will allow such cleaning action to be undertaken without removing the unit containing the array of tubes from normal service, the apparatus be... | 04/14/1992 |
| 5072476 | Apparatus for cleaning pipelines for beverages and the like An apparatus for cleaning pipelines for beverages and other flowable media has a four-way shuttle valve with two ports which are connectable to the ends of a pipeline. The shuttle of the valve is movable in the valve body between a first position in which... | 12/17/1991 |
| 4891115 | Apparatus for cleaning the inner surface of a pipeline from deposits and for forming a protective coating An apparatus is used for both repair of operating pipelines and protection of newly built pipelines and comprises a cleaning tool (1) which is caused to move in the interior of the pipeline (5) under the action of a flow of fluid containing a dissolved in... | 01/02/1990 |
| 4714888 | Apparatus for observing the passage of a pig in a pipeline A device to give an indication of the passage of a pig through a pipeline and methods of performing various pipeline operations using the device are described. The device has a magnetic sensor based on a dip needle and the output of the sensor controls a ... | 12/22/1987 |
| 4688630 | Apparatus for retrieving spherically shaped cleansing bodies An apparatus (8) is provided for retrieving spherically shaped cleansing bodies circulated through the cooling system of a tubular heat exchanger. It has a cylindrical housing (11) into which feed and discharge tubes (6,9) and associated extensions (14,15... | 08/25/1987 |
| 4590799 | Pipeline pig tracking This invention relates to the tracking of a pipeline pig during its movement through a pipeline carrying gas, for instance. The pig is tracked by detecting energy emission resulting from impact of the moving pig with at least two previously identified features... | 05/27/1986 |
| 4345350 | Pipeline cleaning equipment A pig for the removal of ferromagnetic debris from the internal surface of a pipeline comprises a plurality of large area pole pieces of hard ferromagnetic material mounted on low reluctance spacers so that the spacing of poles of opposite polarity is app... | 08/24/1982 |
| 4113611 | Magnetic pipe cleaner A nonmetallic disc has a plurality of kerfs extending radially inwardly from the outer periphery. Magnets are disposed in the bottom of the kerfs so as to form a space between the magnets and the outer periphery of the disc to collect magnetic particulate... | 09/12/1978 |
