| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 015104061 | Fluid current operated | 39 |
| 20090113645 | METHOD OF COUPLING PIPELINE PIGS TO FORM AN ARTICULATED PIPELINE PIG ASSEMBLY - A method of coupling pipeline pigs to form an articulated pipeline pig assembly. A first step involves providing more than one pipeline pig, the more than one pipeline pig having couplers which couple upon impact and allow for limited articulation upon coupling. A second step involves launching each pipeline pig individually into a carrier pipe. A third step involves bringing the more than one pipeline pig into contact within the carrier pipe after launching to cause the couplers on each pipeline pig to couple with another pipeline pig upon impact, thereby forming an articulated pipeline pig assembly of more than one pipeline pig. | 05-07-2009 |
| 20090165227 | Pipeline pigs - A scraper pig for cleaning tubes and pipelines comprising a flexible core provided with a casing in which scraper studs are embedded in a manner whereby they protrude sufficiently to perform a cleaning action when they are propelled through the tube. A method for the manufacture of the pig and the design of the stud is also provided. | 07-02-2009 |
| 20090188059 | Pig with an Improved Seal Effect - A pig for conveying a working medium inside a feed line comprises a pig body which can be driven inside the feed line by a pushing medium and which has on one front side a projection with a free front surface. The pig also contains at least one first and one second circumferential sealing element arranged on the pig body which are made of elastomeric material and which are at a distance from each other in the direction of the longitudinal axis of the pig body and which run coaxial to the longitudinal axis of the pig body. The sealing elements can be pressed against the inner wall of the feed line, in that the working medium or the pushing medium bears against a contact surface of the respective sealing element. The contact surface of the sealing element neighboring the front side with the projection is smaller than the contact surface of the other sealing element. | 07-30-2009 |
| 20090307857 | Device for a Pig - A device for a pig ( | 12-17-2009 |
| 20090320223 | MULTI-DIAMETER ELASTIC SEALING MODULE FOR PIGS - A multi-diameter elastic sealing module for pigs, which operates in pipes having diameter changes, by being sent through the inside of a flexible or rigid pipe to move or draw various fittings and remove internal incrustations from the pipe, impelled by a fluid which flows inside said pipe. | 12-31-2009 |
| 20100000037 | Speed Regulated Pipeline Pig - A pipeline pig includes a venturi and a modulating valve located rearward of the inlet side of the venturi. When the valve is in the open position, a predetermined maximum bypass flow is allowed through the venturi. The closed position allows a predetermined minimum bypass flow. The valve may be a poppet-style valve or a frusto-conical shaped stopper. The stopper has sufficient mass and/or aerodynamic drag to overcome the spring force holding the valve in the open position. When the pig stalls, the valve closes and the stopper chokes bypass flow through the venturi. When the pig starts running again, the valve opens as inertia forces the stopper away from the inlet side of the venturi. Also, as friction of the pig increases due to changes in the internal diameter of the pipeline or accumulation of debris ahead of the pig, increased airflow across the valve creates drag sufficient to partially overcome the spring force, thus keeping the pig moving at a desirable rate of travel. | 01-07-2010 |
| 20100031461 | PIPELINE PIG - A device for travelling along a pipeline having fluid flowing along it comprises means for extracting power from said fluid flow and using that power to move the device along the pipeline against the fluid flow. The device is arranged in a series of coupled modules. | 02-11-2010 |
| 20100122425 | Barrel cleaning system - Improvements are provided to an apparatus for cleaning a tubular. One set of improvements is provided by a nose shaft extending from the motor, a cone positioned on the shaft, and a brush positioned on the shaft between the nose cone and the vibratory motor. Another set of improvements is provided by a new passage and port arrangement on the piston and sleeve for the vibratory motor. Another improvement is provided by a set of passages and ports to provide oil flow to the area being cleaned. Another improvement is provided by capturing exhaust gas from the motor and exhaust of same at a location away from the operator of the unit. | 05-20-2010 |
| 20100139019 | Cleaning Apparatus for Large Diameter Pipe - Apparatus for cleaning the interior surfaces of large diameter pipe provides a lightweight basic structure that is easily adapted to clean a range of diameters of pipe. The apparatus uses an interlocked drive mechanism to develop axial movement of the device and synchronize the rotary movement of the cleaning nozzles. The rate of movement is adjustable, to accommodate pipe of varying diameters. That way, the cleaning spray covers a swath of pipe surface, with a minimum overlap between passes, with no gaps in the cleaning. | 06-10-2010 |
| 20100162503 | Cleaning Pig - A cleaning pig for a pipeline for long-distance transportation of a fluid material is advanced in the pipeline in a travel direction by the fluid material transported in the pipeline. The cleaning pig has a pig body and two collars connected to the pig body and spaced apart from one another. The pig body and the collars fill a pipe cross-section of the pipeline. An intermediate space is delimited between the two collars. A pressure opening is arranged at a trail end of the pig body in the travel direction. A pressure conduit connects the pressure opening to the intermediate space. A suction device is arranged in the intermediate space. A suction outlet is connected by a suction conduit to the suction device. The pressure conduit is connected to at least one jet opening directed with a jet action against an inner wall of the pipeline. | 07-01-2010 |
| 20100180391 | Pipeline Cleaning Pig with Self-Energizing Diagonally Oriented Scrapers - The present invention is a pipeline pig for cleaning the interior of a pipeline, the pipeline pig having a longitudinal pig body with forward and rearward elastomeric propulsion members affixed to and supporting the pig body substantially concentrically in a pipeline, the propulsion members functioning to move the pig body through a pipeline by the force of fluid flow and a plurality of spaced apart elastomeric diagonally oriented scrapers radially extending from the pig body, each scraper member having a semi-circular outer peripheral edge configured and dimensioned to engage the interior wall of a pipeline to thereby scrape and clean the interior pipeline wall as the pig is moved through the pipeline and provide additional support for the pig substantially concentrically in a pipeline. Orientation of the scraper enhances scraping effectiveness by slicing through any debris buildup, separating the debris from the inner pipe wall so that it can be pushed out of the pipeline by the pig discs or cups. | 07-22-2010 |
| 20100192317 | Pipeline Pig With Wear-Resistant Inserts - A pipeline pig includes a plurality of inserts in spaced apart relationship around the periphery of a disk or a cup. The inserts are formed of a material that is compatible with the material of the pig, either the same material or a different material. Molded within the inserts are a random distribution of wear resistant material elements, i.e. a material that is harder than the material from which the insert is molded and harder than the material of the disk or the cup. | 08-05-2010 |
| 20100205757 | BYPASS PIG - Embodiments of the present invention generally relate to a bypass pig. In one embodiment, a pig for cleaning a tubular string includes a cylindrical body and two or more scrapers disposed along an outer surface of the body. The scrapers are operable to engage and clean an inner surface of the tubular string. The pig further includes a bypass formed between the scrapers. The bypass is operable to: intake a portion of propellant from a tail of the body, conduct the portion of propellant along an outer surface of the body, and discharge the portion of propellant in front of the body. | 08-19-2010 |
| 20110138555 | Bidirectional Bristle Pig with Sliding Collar - A bidirectional bristle pig provides a means for collapsing or restraining the bristles so that the pig may be used in a reciprocating manner or, when the pig becomes stuck, the pig may be easily retrieved in a direction opposite that of the initial direction of travel. The bristle pig has at least one set of outwardly projecting cleaning wires or bristles located toward one end of the pig body and a sliding collar. The sliding collar moves between a first position and a second position to restrain the bristles at the desired leading end of the pig and forces the bristles downward and away from the inner wall surface of the pipeline. In the restrained state, the bristles no longer interfere with the movement of the pig in the desired direction. The sliding collar may move in response to pipeline pressure or may include a tether line. | 06-16-2011 |
| 20110154592 | CLEANING SYSTEM - The present invention relates to a cleaning system that does not require the use of electrical energy to power electrical motor or pump and the like to clean condenser fins but instead uses differential in pressure between two separated chambers and magnets. | 06-30-2011 |
| 20110277255 | Reinforced Cup for Use with a Pig or Other Downhole Tool - A reinforced cup for use on downhole devices is disclosed. The reinforced cup is comprised of a cylindrical metal sleeve. Surrounding the outer circumferential surface of the metal sleeve is a flexible mesh cage comprised of a plurality of woven wire strands. A resilient cover is formed around the metal sleeve and flexible mesh cage so that the metal sleeve and flexible mesh fabric are encased by the resilient cover. The flexible mesh cage serves to reinforce the resilient cover. | 11-17-2011 |
| 20120017386 | Pipeline Debris Shearing Device - A pipeline debris shearing device includes a forwardly positioned, self sharpening, wear compensating, diameter conforming elastomeric member that forms a peeling edge having a negative rake angle to peel away debris from the internal wall of a pipeline. The peeling edge is formed at the point of meeting between a concave-shaped, curved forward face surface and a substantially straight outer peripheral surface. Radial slots may be provided to lessen the force being exerted on the peeling edge and provide for bypass flow to carry away debris removed by the peeling edge. Spaced-apart narrow stripper teeth may be added to help in removing harder deposits of debris. The peeling edge may be arranged substantially perpendicular the central longitudinal axis of the pipeline pig or arranged oblique to it. Further, the peeling edge may spiral about at least a portion of the pipeline pig. | 01-26-2012 |
| 20120090111 | WORKING DEVICE FOR AN INTERNAL PIPE AND WORKING METHOD FOR THE SAME - Provided are a method and a device for performing work in pipelines, whereby it is possible to exert an extremely large driving force within a pipeline. Moreover, provided are a method and a device for performing work in pipelines, which are provided with a means for forcibly drying the wet inner surface of a pipeline. The device is provided with an annular pressure boundary seal with a free-end portion that comes into contact with the inner wall of the pipeline. The seal separates the space within the pipeline into two spaces, a space (A) and a space (B), using the seal as a boundary. The end of the space (A) adjacent to the seal is connected with a suction pump via a hose, while the other end of the space (A), which is not adjacent to the seal, is connected with the fluid surrounding the pipeline via a vacuum breaker that adjusts the negative pressure within the space (A). A hose is disposed in the space (B) and the end of the space (B), which is not adjacent to the seal, is connected with the fluid that surrounds the pipeline. | 04-19-2012 |
| 20120137458 | Modular Pipeline Pig with Polymeric Spool Pieces - A modular pipeline pig is formed of one or more driving cups and one or more scrapers, all joined together by flexible polymeric spool pieces. The scrapers include notches or cut-outs along their peripheral edges to bypass fluid. The driving cups, scrapers, and flexible spool pieces are joined together by metal bolts, the only metallic part of the pig. A flow path is provided through and around the pig to flush paraffin away from the pig when it is resident within a receiver so that the pig can be easily removed from the receiver without the laborious manual removal of the paraffin. | 06-07-2012 |
| 20120324660 | PIPELINE PIG BRUSH - A pipeline pig brush and method of assembly of the pipeline pig brush is provided. The pipeline pig brush has a body with a plurality of recesses provided in an outer surface. A number of brushes, each brush having a ferrule and a tuft of bristles, can be mounted to the body, wherein the ferrule of each brush is inserted into the recess and a removable fastener is installed to engage the body and overlap the ferrule such that the ferrule cannot be removed from the recess without removing the fastener. | 12-27-2012 |
| 20140123417 | PIPELINE PIG BRUSH AND BRUSH ASSEMBLY - A brush useful in pipeline pigs, for example, in magnetic flux leakage tools or cleaning tools, a method of making the brush and pipeline pig comprising the brush. The brush has a metal bristle holder and a plurality of bristles, the ends of which are held in the bristle holder by glue, swaging or a combination of glue and swaging. The glue may be an anaerobic glue. The brush and method of making avoid the use of heat to secure the bristles to the bristle holder, avoid the use of solder or weld metal, and are less labor intensive than soldering or welding. | 05-08-2014 |
| 20160074914 | ANTI-FOULING APPARATUS FOR CLEANING DEPOSITS IN PIPES AND PIPE JOINTS - A system for cleaning pipes and pipe joints where the interior surface of the pipe becomes coated with material being processed comprising a cylindrical cleaning body having opposing first and second ends, said cylindrical body having an annular shape with interior and exterior walls so that the outer wall contacts the interior surface of a pipe and wherein ends of the cleaning body have means for removing material deposited on the interior surface, a means for moving the apparatus along the length of said pipe, a first and second means for cleaning said cleaning body having passages that allow fluid to pass through, wherein said first and second cleaning means mates with said first and second ends of said cleaning body, where said cleaning body is moved into contact with said cleaning means to dislodge accumulated deposits from the cleaning body and simultaneously dislodging accumulated deposits from said cleaning means. | 03-17-2016 |
| 20160167094 | Pig, in Particular Inspection or Cleaning Pig | 06-16-2016 |
| 20160184872 | Pipeline Debris Shearing Device - A pipeline debris shearing device includes a forwardly positioned, self sharpening, wear compensating, diameter conforming elastomeric member that forms a peeling edge having a negative rake angle to peel away debris from the internal wall of a pipeline. The peeling edge is formed at the point of meeting between a concave-shaped, curved forward face surface and a substantially straight outer peripheral surface. Radial slots may be provided to lessen the force being exerted on the peeling edge and provide for bypass flow to carry away debris removed by the peeling edge. Spaced-apart narrow stripper teeth may be added to help in removing harder deposits of debris. The peeling edge may be arranged substantially perpendicular the central longitudinal axis of the pipeline pig or arranged oblique to it. Further, the peeling edge may spiral about at least a portion of the pipeline pig. | 06-30-2016 |
| 015104062 | Cleaner plug insertion or removal device | 13 |
| 20080263795 | Device for Cleaning Tubes - The present invention provides a device for cleaning tubes, in particular the internal surfaces of tubes in heat exchange systems. The device comprises a mass ( | 10-30-2008 |
| 20080263796 | PIPELINE SYSTEMS USING A REVERSE FLOW WYE CONNECTOR - A piggable pipeline system is disclosed. One or more pig launcher/receivers may be coupled to a pipeline. At least one fitting may be coupled to the pipeline. The fitting may include a body and at least two passages through the body. The passages are in fluid communication within the body. A diverter is located in at least one of the passages. The diverter is movable between an open position and a closed position. In the open position, the diverter allows open flow between two of the passages. In the closed position, the diverter inhibits flow between the two passages. The pipeline may allow a pig to be launched from at least one of the pig launcher/receivers and returned through the pipeline to at least one of the pig launcher/receivers. | 10-30-2008 |
| 20110239386 | Pig Receiver Assembly - A pig receiver and method retrieve pigs in pipeline pigging operations. In one embodiment, a pig receiver includes a pig receiver unit. The pig receiver also includes a pig gate valve assembly disposed on the pig receiving unit. The pig gate valve assembly includes a gate valve. The pig gate valve assembly also includes a first actuator and a second actuator. The pig gate valve assembly further includes a cylinder guide. In addition, the pig gate valve assembly includes a tie bar. Actuation of the tie bar actuates the gate valve. An end of the tie bar is attached to the first actuator, and an opposing end of the tie bar is attached to the second actuator. The pig receiver also includes a pressure equalization system that adjusts the pressure downstream of the gate valve when the gate valve is in a closed position. | 10-06-2011 |
| 20120131758 | PIPELINE PIG AND LAUNCHING APPARATUS - The present invention provides a pipeline pig ( | 05-31-2012 |
| 20130111680 | PIG LAUNCHER - An apparatus ( | 05-09-2013 |
| 20130125323 | PIG RECEIVER - An apparatus for receiving a pig ( | 05-23-2013 |
| 20130212820 | REMOTE PIG LAUNCHER - A pig launching system comprising a first pipe portion connected to a second pipe portion at a pipe intersection; a pig carrier located at the pie intersection; and the pig carrier comprising a plurality of pigs in a cylinder, an opening in the carrier aligned with the first pipe portion, and an indexing system adapted to move one of the pigs to the opening. | 08-22-2013 |
| 20130212821 | SUBSEA PIG HANDLER - A pig launching system comprising a pipe loop comprising a first end and a second end; a pig shuttle connected to the first end and the second end; a first opening in the pig shuttle aligned with the first end of the pipe loop; a second opening in the pig shuttle aligned with the second end of the pipe loop; and a slot within the pig shuttle movable between the first opening and the second opening. | 08-22-2013 |
| 20140000046 | PIPELINE INSPECTION GAUGE EXTRACTOR | 01-02-2014 |
| 20140068883 | PIG LAUNCHER - As shown a carrier module ( | 03-13-2014 |
| 20140245550 | Pig Receiver Assembly - A pig receiver and method retrieve pigs in pipeline pigging operations. In one embodiment, a pig receiver includes a pig receiver unit. The pig receiver also includes a pig gate valve assembly disposed on the pig receiving unit. The pig gate valve assembly includes a gate valve. The pig gate valve assembly also includes a first actuator and a second actuator. The pig gate valve assembly further includes a cylinder guide. In addition, the pig gate valve assembly includes a tie bar. Actuation of the tie bar actuates the gate valve. An end of the tie bar is attached to the first actuator, and an opposing end of the tie bar is attached to the second actuator. The pig receiver also includes a system for removing contaminants from the pig receiver. | 09-04-2014 |
| 20160195213 | PIG HANDLING DEVICE | 07-07-2016 |
| 20190143383 | Apparatus and Method for In-Situ Cathodic Protection of Piggable Water Pipelines | 05-16-2019 |
| 015104063 | Scraper with signalling device | 2 |
| 20080282486 | SMELT SPOUT OPENING CLEANER, CLEANING HEAD AND APPARATUS - A spout opening cleaner for cleaning smelt spouts of recovery boilers and the like includes an actuation arm and self-aligning cleaning head. The cleaning head employs open bail designs for enabling continued flow of smelt during a cleaning cycle. | 11-20-2008 |
| 20130276250 | Trackable pipeline scraper for active tracking and locating - A tracking system for use with a pipeline includes a scraper having signal generation capability for generating acoustic signals, a plurality of acoustic pressure sensors positioned at intervals along the path traveled by the scraper, and a plurality of local processors positioned at intervals along the path traveled by the scraper. Each of the local processors is m communication with a respective acoustic pressure sensor. A central processor is in communication with the local processors and determines the location of the scraper using time-stamped acoustic signals received by the pressure sensors and a speed of sound, in a fluid within the pipeline. | 10-24-2013 |
