Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8117997 | Dual pipe heat exchanger of boiler for house heating and hot water Disclosed is a double pipe heat exchanger for a boiler supplying heating water and hot water, which can prevent water from being condensed even if cold heating water or cold water is introduced into an inlet of the heat exchanger in the boiler for supplying heating ... | 02/21/2012 |
| 8015950 | Single can-type composite heat source machine A single can-type composite heat source machine including a single can body including a first combustion section having a first burner and a hot water supplying first main heat exchanger located above the first burner, and a second combustion section having a second... | 09/13/2011 |
| 7975657 | Portable heat transfer apparatus The present invention relates to a portable heat transfer apparatus designed to supply heat to an external heat load, such as a space-heating unit or a heating garment, in a manner to be usable in outdoor and other environments where it is difficult to receive a sup... | 07/12/2011 |
| 7909005 | Condensation heat exchanger including 2 primary bundles and a secondary bundle This exchanger comprises a pair of primary tubular bundles (5a, 5b) surrounding a fuel or gas burner (4a, 4b), and a secondary tubular bundle (6) on which condensation of the steam contained in the burne... | 03/22/2011 |
| 7891324 | Method and apparatus for heating a circulating fluid in an indirect heat exchanger A heater and a method for heating a circulating liquid in a gas-to-liquid heat exchanger and an indirect heat exchanger to produce a hot liquid stream for use for heat exchange in a selected process to supply heat to the process. One particularly useful application ... | 02/22/2011 |
| 7823543 | Heat exchanging apparatus and superheated steam generating apparatus using the same A heat exchange flow passage 21 comprises a plurality of annular flow passages arranged in parallel to each other and also communicated to each other in the circumferential direction, a plurality of inflow ports and a plurality of outflow ports provided in th... | 11/02/2010 |
| 7819090 | Heat exchange apparatus, particularly fire tube condensing boiler A heat exchange apparatus, particularly a fire tube condensing boiler, provided with a structure made of carbon steel and comprising an outer enclosure, which is adapted to delimit a portion of space for containing the fluid to be heated, which is fed cold by means ... | 10/26/2010 |
| 7810456 | Storage water heater To provide a storage water heater capable of increasing thermal efficiency and quickly boiling when tap water is supplied into a hot-water tank. A storage water heater can heat low-temperature water having a high density because hot water in a hot-water tank is led ... | 10/12/2010 |
| 7784433 | Heat exchanger for cooling reaction gas A heat exchanger for cooling reaction gas, wherein the respective ends of heat exchanger tubes, through which the reaction gas flows, are inserted in a respective tube plate and are surrounded by a jacket, at the two ends of which are provided a respective end chamb... | 08/31/2010 |
| 7628121 | Apparatus and process for cooling hot gas An apparatus for cooling hot gas comprises: (i) a vertical elongated vessel provided with a cooling medium compartment comprising in use a first cooling medium, an inlet to supply fresh first cooling medium and a outlet for discharge of used first cooli... | 12/08/2009 |
| 7600489 | Heat exchanger having plural tubular arrays A heat exchange apparatus including a housing, a first array of fluid conduits provided within the housing, and a second array of fluid conduits provided within the housing. The first and second arrays of fluid conduits are configured to carry a first fluid. The hea... | 10/13/2009 |
| 7581515 | Control scheme for an evaporator operating at conditions approaching thermodynamic limits A heat exchanger assembly includes a plurality of evaporative heat exchangers that are selectively feed evaporant to tailor operation to current heat load in order to maintain operation in thermodynamically extreme operating conditions. ... | 09/01/2009 |
| 7552701 | Boiler for making super heated steam and its use A boiler for making super heated steam by indirect heat exchange of water against a hot gas, said boiler being a vertically oriented vessel comprising a spirally formed conduit around the vertical axis of the vessel, which vessel is provided with an inlet for hot ga... | 06/30/2009 |
| 7523721 | Heat exchanger and water heater A heat exchanger A1 includes a partition 19 partitioning the space 35 surrounded by a coiled tube 60 at an axially intermediate portion of a housing 2 into a first and a second regions 35a and 35b and pa... | 04/28/2009 |
| 7490580 | Vaporizer that vaporizes a liquid to generate vapor A vaporizer generates vapor by vaporizing a liquid. In particular, a vaporizer generates fuel vapor that is used for reforming fuel by vaporizing a liquid fuel that contains a hydrocarbon. This vaporizer includes a heating gas direct movement flow path along which a... | 02/17/2009 |
| 7458340 | Water heater A secondary heat exchanger B for recovering latent heat from combustion gas includes water tubes 5 each of which is so inclined that a first end 50a is positioned lower than a second end 50b. Therefore, in draining water from each ... | 12/02/2008 |
| 7428883 | Heat exchanger and water heater A heat exchanger A1 includes a coiled tube 60 including a plurality of loops 60a, and a space 35 surrounded by the coiled tube 60 and having an end closed by a partition 19. The heat exchanger is so designed that comb... | 09/30/2008 |
| 7353781 | Arrangement structure of heat exchanger in condensing gas boiler An arrangement structure of heat exchangers in a condensing gas boiler is provided, which includes a casing provided with a combustion chamber therein, and a gas burner provided in the lower portion of the combustion chamber. The arrangement structure of heat exchan... | 04/08/2008 |
| 7337828 | Heat transfer using a heat driven loop A heat transfer fluid medium (25) within the closed system is arranged to boil to form a vapor in the evaporation section (12) and such that release of heat from the condensation section (11) to the fluid to be heated (4A) causes the vapo... | 03/04/2008 |
| 7337752 | Instantaneous fuel-fired water heater with low temperature plastic vent structure An instantaneous type fuel-fired water heater has a variable speed blower that discharges combustion air into a fuel burner utilized to heat water flowing through a heat exchanger portion of the water heater. A portion of the air discharged from the blower bypasses ... | 03/04/2008 |
| 7337791 | Rollover car wash for large vehicles A vehicle washer of the rollover type especially suitable for washing large vehicles such as buses and trucks. The washer includes an overhead carriage moving along an overhead guide rail structure and including opposed L-shaped spray arms adapted to wash top and si... | 03/04/2008 |
| 7278379 | Heat exchange system An improved shell-and-tube steam instantaneous heat exchange system of a closely coupled feedback design which overheats water in the heat exchanger portion of the system and then blends the water, as needed, with proportional amounts of cold water to achieve the co... | 10/09/2007 |
| 7258081 | Compact water vaporizer for dynamic steam generation and uniform temperature control A compact cylindrical vaporizer for simultaneous reduction of a reformate stream temperature and generation of a process stream is disclosed. The vaporizer utilizes counter flowing nested tubular portions that spiral between an outer section of the vaporizer and a c... | 08/21/2007 |
| 7168395 | Submerged combustion LNG vaporizer This invention discloses a method and device for vaporizing LNG with a submerged combustion vaporizer. The submerged combustion LNG vaporizer uses spiral tube heat transfer circuits and a submerged combustion heat source for vaporizing LNG. The submerged combustion ... | 01/30/2007 |
| 7114468 | Internal small volume storage water heater The invention concerns devices for water storage, heating and delivery. A storage water heater of the invention provides an amount of unmixed recently heated water from an internal small volume during a draw along with water from a main volume. When water is drawn f... | 10/03/2006 |
| 7063047 | Fuel vaporizer for a reformer type fuel cell system Large thermal stresses are avoided and the fuel charge reduced in a vaporizer particularly suited for use in a reformer type fuel cell system and having a construction that includes alternating fuel/water flow path defining cells (68) and hot gas flow path ce... | 06/20/2006 |
| 7036463 | Heat exchanger for liquid vaporization A heat exchanger for vaporizing a liquid where provided is a boiler in heat-transferrable contact with a plenum that receives a heated medium. The boiler receives a liquid through a liquid inlet, the liquid being in mist or droplet form. The boiler also receives a t... | 05/02/2006 |
| 7028478 | Method and apparatus for the production of energy The invention provides processes and apparatuses for safely, rapidly, cost-effectively and efficiently producing a superheated steam. These processes and apparatuses involve the combustion of one or more fuels containing the element hydrogen, the element carbon or t... | 04/18/2006 |
| 7017329 | Method and apparatus for mixing substances A combustor assembly for a gas powered turbine includes a premix section to mix a first selected volume of fuel with a selected oxidizer. The premix section includes an injector plate that includes a porosity according to selected characteristics, such as pore size,... | 03/28/2006 |
| 7013925 | Accumulator tank assembly and method Some embodiments of the present invention provide an accumulator tank assembly and method in which a flexible bladder is received within an accumulator tank. The accumulator tank and the flexible bladder can each have an inlet aperture through which fluid is receive... | 03/21/2006 |
| 6971335 | Water heater A water heater is provided in which neutralization process of drain is not required and an excellent heat efficiency is achieved. A route of exhaust gas which is passing through the main heat exchanger 18 is divided into a first exhaust gas chamber 23 ... | 12/06/2005 |
| 6953009 | Method and apparatus for vaporizing fuel for a reformer fuel cell system A vaporizer, a fuel cell system including the vaporizer, and a method of vaporizing fuel in a fuel cell system are disclosed. The fuel cell system includes a fuel reservoir (24) for storing a liquid fuel and a fuel cell (10) for consuming a fuel and ge... | 10/11/2005 |
| 6948453 | Hydrocarbon cracking A method for controlling fouling of a heat exchanger that operates downstream of a cracking furnace by injecting liquid water upstream of the heat exchanger. ... | 09/27/2005 |
| 6945197 | Water heater A water heater which includes a heat exchanger having a first passage and a second passage connected with the first passage, a gas burner mounted within the first passage, a push blower having an outlet conmected with the gas burner for forcing air into the gas burn... | 09/20/2005 |
| 6946022 | Scrubber and exhaust gas treatment apparatus A scrubber removes dust from an exhaust gas. The scrubber includes a casing having an exhaust gas inlet and an exhaust gas outlet, an impeller housed in the casing and supported by a shaft, and a cleaning liquid supply tube for ejecting a cleaning liquid by which th... | 09/20/2005 |
| 6843207 | Water supply tank unit A water supply tank unit, attached to a heating apparatus having a moistening function, comprising an open/close member biased in a direction of departing from a unit body attached to the heating apparatus, and a water supply tank held in the open/close member so as... | 01/18/2005 |
| 6772712 | Energy system A low-pressure energy system is provided that includes a combustion chamber immersed in water within an insulated container. Low-pressure air flow is introduced into one end of the combustion chamber. Fuel, sparks and water are also introduced to the combustion cham... | 08/10/2004 |
| 6766772 | Apparatus for heating steam An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a superheater arranged in the heat exchanger vessel; a process for heating steam performed in such an apparatus; and a process for gasification of a hydrocarbonaceous fe... | 07/27/2004 |
| 6688261 | Heating system for liquids A heater comprises an enhanced-surface area heat transfer vessel which is situated co-axially in a hot flue gas plenum. The plenum is formed by dual-wall heating jacket. Liquid flowing through the jacket is heated co-currently by the flue gas before the p... | 02/10/2004 |
| 6672258 | Intermediate heat exchanger-incorporated type steam generator An intermediate heat exchanger-incorporated type steam generator having an intermediate heat exchanger tube 20 and a steam generating heat exchanger tube 22 disposed separately in a vessel 10 storing a secondary coolant 14 therein. A pump mechanism is mad... | 01/06/2004 |
