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| Number | Title | Issue Date |
| 7011047 | Detonative cleaning apparatus Methods and apparatus are provided for cleaning a surface within a vessel. A fuel/oxidizer charge is provided within a combustion conduit. An initial deflagration commenced in a first portion of the charge produces a final detonation at least in another portion of t... | 03/14/2006 |
| 6761135 | Multipurpose assembly A combination capable of providing all of the functions of a ground heater and a pressure washer in a more economical, convenient and effective manner by employing and engine, as pump, a generator, a burner, a boiler, a water tank, a float tank, a ground heater hose... | 07/13/2004 |
| 6684823 | Impulse ash deposit removal system and method An impulse generator produces controlled pressure waves for removing ash deposits from heat exchangers in a boiler. The impulse generator has a fuel inlet, an air inlet, an ignitor, an outlet, and a control system for selectively and intermittently igniti... | 02/03/2004 |
| 6655322 | Boiler water blowdown control system The present invention relates to a method for automatically maintaining the concentration of scale forming minerals in boiler water for boiler systems utilizing bimodal feedwater pumps that deliver a substantially constant feedwater flow to the boiler dru... | 12/02/2003 |
| 6470837 | Method for servicing and maintaining heat supply equipment In heat supply equipment provided with a plurality of maintenance object units, secure and prompt servicing and maintenance is implemented and a burden on a person in charge of managing the heat supply equipment is decreased. In a method for servicing and... | 10/29/2002 |
| 6422180 | Flush line for dishwasher A flush line for dishwasher mainly includes a steam boiler provided at an upstream position of the flush line and having a water inlet connected to a water-in valve and a water outlet connected to a water stop valve; and a pump and a spray nozzle sequenti... | 07/23/2002 |
| 5575328 | Debris box A debris box, for use with a search and retrieval device for searching and retrieving a plurality of foreign objects within a heat exchanger, includes a holder mechanism, such as a container, for containing the foreign objects which are retrieved by the s... | 11/19/1996 |
| 5566649 | Method and apparatus for the cleaning of fire tubes in a fire tube boiler The present invention relates to a method and apparatus for cleaning and removing the buildup of products of corrosion, oxidation, sedimentation and comparable chemical reactions from various portions of a fire tube boiler. Specific areas to be cleaned ar... | 10/22/1996 |
| 4624220 | Infrasound generator An infrasound generator including a quarterwave resonator tube having a closed end and an open end and being of substantially uniform diameter, the open end of the tube being adapted to communicate with a space containing the heat exchange surfaces of a b... | 11/25/1986 |
| 4465026 | Automatic boiler blowdown system including blowdown sequence control A blowdown system for controlling blowdown of a boiler such that the level of dissolved solids in the boiler is carefully controlled. The system includes a blowdown tank connected to the bottom of a boiler. Controls are provided for causing blowdown when ... | 08/14/1984 |
| 4453499 | System and method for reducing scale formation in boilers A system and a method for controlling the concentration of dissolved matter in a liquid in a boiler or still, wherein a first sensor measures the electrical conductivity of the incoming liquid and a second sensor measures the electrical conductivity of th... | 06/12/1984 |
| 4428328 | Steam boiler heat recovery apparatus A boiler blowdown heat recovery system is described herein which includes conduit means for directing the blowdown water and fresh water through a heat exchanger, and metering and display means are included for showing the volumetric flow of the blowdown ... | 01/31/1984 |
| 4287407 | Tank flushing delay arrangement for a steam generator A steam generator includes a tank with a water inlet valve, a steam outlet, an electric immersion heater in said tank, and a normally closed drain valve. A water level control, connected to the inlet valve and the heater, is arranged to apply power to the... | 09/01/1981 |
| 4285302 | Boiler blowdown system An apparatus and method for automatically blowing down a boiler are disclosed, wherein the discharged sediment-containing water is drawn off to an intermediate receiver or holding tank for a short interval and then sent through a heat exchanger which is i... | 08/25/1981 |
