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| Number | Title | Issue Date |
| 8146193 | Launcher for tube cleaning projectiles A launcher for heat exchanger tube cleaning projectiles using operator selected compressed air application for manipulating launcher operating components including hydraulic bolt, projectile plunger, and water valve to fire projectile with pressurized water, and to ... | 04/03/2012 |
| 8051523 | Tube cleaning implement A tube cleaning implement with elongate shaft supporting a brush in a median section and similar scrapers or wipers fitted to opposite ends of the shaft to provide for a scrape-brush-scrape cleaning action of tube interiors, and to provide a reversible implement hav... | 11/08/2011 |
| 7841351 | Coil cleaning machine A machine for cleaning coils in HVAC installations including particularly the coils located in outdoor HVAC units and coils located in interior ductwork the machine comprising a shell housing enclosing cleaning fluids, an electrical system for line power or battery ... | 11/30/2010 |
| D624718 | Device for cleaning HVAC coils | 09/28/2010 |
| D620210 | Vacuum cleaner | 07/20/2010 |
| 7490381 | Tube scraper A tube scraper for removing deposits from the interior surface of heat exchange tubes, the scraper being fitted with a set of diverging scraper blade arms mounted on an arbor in nested relationship such that scraper blades have overlapping scraping edges. ... | 02/17/2009 |
| D561412 | Tube cleaning machine | 02/05/2008 |
| D555847 | Tube cleaning machine | 11/20/2007 |
| D554374 | Tube cleaning implement | 11/06/2007 |
| 7282156 | Apparatus & method for cleaning cooling tower recirculating water An apparatus and method for removing water and debris from a cooling tower basin, discarding debris and returning clean water to the basin. ... | 10/16/2007 |
| 7223337 | Apparatus and method for cleaning cooling tower recirculating water An apparatus and method for removing water and debris from a cooling tower basin, discarding debris and returning clean water to the basin. ... | 05/29/2007 |
| 7055203 | Tube cleaning machine A tube cleaning machine for industrial smooth bore tubes and enhanced tubes in which the machine includes a rotary brush with means for selecting brush rotary speed for optimum cleaning of the smooth bore and enhanced tubes, and in which the machine includes a water... | 06/06/2006 |
| D518607 | Tube cleaning machine | 04/04/2006 |
| 6863116 | Apparatus and method for collection and disposal of waste-water and debris from heat exchanger tubes and other sources A large flexible plastic bib that is conical or funnel shaped with its large open end supported by a frame for positioning near a source of effluent to be collected, and the bib small open end positioned to direct liquid and debris toward a floor drain. ... | 03/08/2005 |
| D489495 | Tube cleaning machine | 05/04/2004 |
| 6672794 | Quick disconnect tube cleaning brush coupling A coupling particularly suited for brushes for tube cleaning operations includes interfitted shaft and brush coupling members retained by a locking mechanism in axial alignment for rotation in tube cleaning operations. The shaft and brush coupling interfi... | 01/06/2004 |
| 6631531 | Quick load air gun A quick load air gun for cleaning conduits by propelling a foam projectile through the conduit by means of a compressed air charge. The air gun includes a quick load port for inserting projectiles into the gun chamber, and a compressed air circuit includi... | 10/14/2003 |
| 6467121 | Rotary tube scrubber A tube scrubber comprises an elongate body symmetrical about its longitudinal axis, having a central core with threaded stem for connection to a rotary driving device, and a plurality of flexible arms or webs extending outward from the central core and te... | 10/22/2002 |
| 5472514 | Duct cleaning method A method and apparatus for cleaning ducts such as used in HVAC systems includes as part of the apparatus a propeller having pitched, flexible blades for rotatably engaging the interior duct surface for dislodging soot and propelling a cloud of soot along ... | 12/05/1995 |
