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| Number | Title | Issue Date |
| 7325269 | Scraper blade interlocking attachment apparatus and method Attachment apparatus and method for interlocking attachment of a scraper blade with a drive shaft of a scraped surface heat exchanger includes a blade having dual attachment beams and a central locking member, and at least one pin having dual fingers each for interl... | 02/05/2008 |
| 7294222 | External pipe cleaner Disclosed is a pipe cleaner apparatus that is attached to a pipe fusion machine. The pipe cleaner removes dirt, snow, mud, and other debris from the outer surface of pipe sections prior to the butt fusion process. The pipe cleaner may be a wiper through which the pi... | 11/13/2007 |
| 6848143 | Scavenging metallic debris from buried metal pipelines A metal-debris magnetic scavenging tool useable inside a buried, horizontal metallic pipeline through an access opening which has been cut into the upper wall portion of the pipeline overhead where the resulting debris has collected. A raiseable/lowerable and rotata... | 02/01/2005 |
| 6792641 | Pipeline pig A pig for use with a tubular bore wherein the pig is comprised of a body which supports a plurality of turbine blades wherein the blades mechanically break down and remove debris from the tubular bore. The blades have a profile which allows forward movement and rota... | 09/21/2004 |
| 6611983 | Tool for dislodging packed material from a discharge chute A tool for safely dislodging packed material from a discharge chute which includes an elongated shaft having a handle at one end and a probe tip at the other end. One or more plates depend from one side of the shaft intermediate the ends of the tool. The ... | 09/02/2003 |
| 6544482 | Chamber cleaning mechanism The present invention provides a reaction chamber cleaning apparatus comprising a chamber, a blade apparatus comprising at least one annular mounting member, at least four scraping blades attached peripherally about the annular mounting member, and a reci... | 04/08/2003 |
| 6182325 | Chamber cleaning mechanism An apparatus for cleaning a chamber is disclosed. Scraping blades are rotatably mounted within a chamber and parallel to a longitudinal axis of the chamber. The scraping blades are rotated circumferentially within the chamber, scraping the inner surface o... | 02/06/2001 |
| 6065174 | Parabolic scraper for a pipeline pig A cleaning pig comprising a forward cup, a rear cup and a connecting central body extending between the two cups, the cups having an outside diameter corresponding generally to the inside diameter of a pipeline to be cleaned by the cleaning pig, a plurali... | 05/23/2000 |
| 5903946 | Pipe cleaning device A pipe cleaning device comprises a central body and articulated scraper elements. The articulated shape of the scraper elements serves to enhance the cleaning performance of the device.... | 05/18/1999 |
| 5842246 | Chimney brushing tool A cleaning brush for scraping the interior of circular chimney flues and stove pipes. The brush has a central threaded rod from which blades radially project in a spiralled arrangement. The blades are just greater in length than the radius of the flue or ... | 12/01/1998 |
| 5491862 | Chimney scraper A scraper for removing deposits from an interior of a chimney. The inventive device includes an elongated handle having a scraping plate attached to a lower end thereof for engaging and scraping the interior surfaces of the chimney. The scraping plate can... | 02/20/1996 |
| 5426812 | Device for cleaning chimney flues or like passageways A device for cleaning chimney flues or like passageways comprises a multiplicity of generally planar strips of flexible, resilient plastic sheet material each having a length several times greater than its width, the strips having their central areas secu... | 06/27/1995 |
| 5257435 | Chimney cleaning tool A chimney cleaning tool for removing accumulations of foreign materials from the interior surfaces of smoke chambers and chimney flues of fireplaces and furnaces. The invention comprises a hub which is adapted to be rotated by a power driven rod, a single... | 11/02/1993 |
| 5201345 | Inflatable containment diaphragm for sealing and removing stacks A diaphragm with an inflatable torus-shaped perimeter is used to seal at least one end of a stack so that debris that might be hazardous will not be released during removal of the stack. A diaphragm is inserted and inflated in the lower portion of a stack... | 04/13/1993 |
| 5180210 | Chiseling apparatus A piston and cylinder combination mounted on the end of an elongated handle projects into a chimney. A chisel is connected to the piston to reciprocate with the piston in response to high pressure air delivered to the cylinder. The chisel has a cutting ed... | 01/19/1993 |
| 4949418 | Chimney cleaning apparatus This invention is directed to a novel apparatus which can be used for cleaning the interiors of fouled chimneys. More particularly, this novel apparatus can be adjusted to fit the interiors of various chimney sizes. The apparatus cleans not only soot but ... | 08/21/1990 |
| 4937939 | Remotedly operated chimney chisel A chisel 1, 2, for removing hard deposits 29 inside a chimney 14, which is braced against one wall 24 to exert a chiseling force on the opposite wall 23. The chisel 1, 2 is sharp on one end 22 and is manipulated by a pushing handle 6 and a pulling handle ... | 07/03/1990 |
| 4873739 | Chimney cleaning device This invention relates to two or more flat flexible membranes segmented into blades for cleaning chimneys and conduits. Said membranes can be lowered into a chimney by gravity and with only light contact with the interior surface of the chimney. The blade... | 10/17/1989 |
| 4841593 | Hollow ware and chimney cleaning device This cleaning device utilizes two methods, simultaneously, to remove deposits from the conduction channel inside a multitude of various shaped tubes or the like, including round, square, and rectangular chimney flues. The first removes soft, brittle depos... | 06/27/1989 |
| 4813097 | Scraping device for removing deposits from flues, chimneys, and the like The invention essentially comprises a scraping device for mounting at the end of a rod, having a body comprising a plurality of radial extending arms. At the ends of each arm is the scraping surface. The construction of this scraping device is such that w... | 03/21/1989 |
| 4768255 | Chimney cleaning device A device for cleaning a chimney flue having four side walls which comprises a rigid enlongated shaft, a fixed mounting plate means attached at one end of said elongated shaft, four scraping blades attached to said mounting plate means so as to collectivel... | 09/06/1988 |
| 4625358 | Chimney cleaning tool A chimney tool for cleaning the soot and creosote out of chimneys and stovepipes, including a pole, and on the end of the pole a bent-rod tool made of resilient material and having a lower shank attached to the end of the pole and mounting a scraper blade... | 12/02/1986 |
| 4594745 | Apparatus for cleaning chimneys This invention relates to the cleaning of chimneys such as those of wood burning fireplaces. An electric motor is supported from a frame. In one mode of operation, the frame is supported in a chimney by a long rod which is along the line of the axis of th... | 06/17/1986 |
| 4591389 | Flue cleaning apparatus Flue-cleaning apparatus having longitudinal springs mounted transversely on a flexible shaft at one end, the other end of the shaft being adapted to be clamped by the chuck of a hand-held drill.... | 05/27/1986 |
| 4538552 | Primary air duct cleaning apparatus for recovery boilers A primary air duct for a chemical recovery furnace is rectangular in cross section. Smelt accumulates on the walls of the air duct at the furnace end. A scraper structure is comprised of a pair of C-channels hinged together at one end. A mechanism moves t... | 09/03/1985 |
| 4498212 | Flue cleaner An improved flue cleaner is provided having a scraper and an adjustable fulcrum assembly mounted on opposite sides of the end portion of an elongated rod. The fulcrum assembly includes a roller rotatably mounted on one end of a pivotable beam and is fixed... | 02/12/1985 |
| 4492000 | Chimney cleaner A horizontal mount is provided having opposite side portions and central structure for attaching the lower end of an elongated upstanding support member thereto disposed generally normal to a plane extending between and along the mount opposite side porti... | 01/08/1985 |
| 4490879 | Scraping tool A scraping tool comprising scraping means adjustably and removably securable to an elongated, rigid handle, the scraping means comprising two rigid metal blades each having a scraping edge, and securing means for attaching one or both blades to the handle... | 01/01/1985 |
