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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6561894 | Clean box, clean transfer method and apparatus therefor Using a clean box 30 which includes a box body 31 having an annular groove 33 for suction surrounding a side aperture 32 and an intake/exhaust port 34 in communication therewith, a side lid 35 for closing the aperture 32 while being sucked by a pressure d... | 05/13/2003 |
| 6321690 | Device, system and method for on-line explosive deslagging A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives to prevent them from ... | 11/27/2001 |
| 6293230 | Water heaters with flame traps A gas water heater including a water container adapted to be heated by a gas burner; and an enclosure surrounding the burner, the enclosure having at least one entryway adapted to allow air and fumes to enter the enclosure without igniting flammable gases... | 09/25/2001 |
| 6250917 | Regenerator/burner system for heating a fuel-fired industrial furnace In order to create a regenerative, energy-saving fuel firing for an industrial furnace, particularly for a metal smelting furnace, that can flexibly take all possible time and space operating conditions and demands of the furnace to be heated as well as t... | 06/26/2001 |
| 6241597 | Cleaning apparatus for maintaining semiconductor equipment An apparatus for maintaining semiconductor is disclosed. The cleaning apparatus includes two parts of a maintaining apparatus and gas-absorbing apparatus The maintaining apparatus mainly comprises a container using for isolating poison gas outside and a i... | 06/05/2001 |
| 6241514 | Oxidant-driven dust recycling process and device for rotary kilns A kiln adapted to recycle kiln dust includes a recycle dust pipe in fluid communication with an oxidant stream to increase the concentration of oxygen in the fluidized recycle dust before the recycle dust stream is directed into the kiln flame. Increasing... | 06/05/2001 |
| 6237544 | Water heater and gas burner A water heater includes a tank 10 arranged inside a casing 20 with a burner 16 below the tank so that a heat exchange zone 15 surrounding the tank receives the combustion products. The tank 10 is supported on three edge contact projections 26 resting on l... | 05/29/2001 |
| 6210269 | Oscillating drive for air flow discharge An oscillating drive mechanism for an air discharge nozzle, which is mounted for pivotal movement about an axis. The discharge nozzle includes end plates, each having a pivot pin extending along the pivot axis. One end plate has an elongated slot therein ... | 04/03/2001 |
| 6203314 | Combustion assembly for a furnace and method of use Combustion assembly adapted to be placed in a wall of a furnace including an axis having at least one pair of burners with axes, one oxidant lance arranged between the burners of the pair and having a lance axis and a source of oxidant connected to the bu... | 03/20/2001 |
| 6199515 | Baffles for water heaters A water heater baffle having an inlet and an outlet for the passage of water therethrough, the baffle being arranged to force the water entering the baffle through a labyrinth before exiting the baffle in a direction substantially 90° to its general flow... | 03/13/2001 |
| 6196164 | Ignition inhibiting gas water heater A water heater including a water container; a combustion chamber located adjacent the container, the combustion chamber having a floor portion with an opening; a conduit extending upwardly from and being substantially sealed to the opening; a burner locat... | 03/06/2001 |
| 6193603 | Wind outlet plate of an air conditioner for cleaning air A wind outlet plate of an air conditioner for cleaning air comprises a wind outlet panel, an upper cover, a wind guiding plate, a filter, a negative ion generator, an ultraviolet lamp. The wind outlet panel has a wind outlet. The upper cover is installed ... | 02/27/2001 |
| 6193600 | Air passage switching system for air conditioner An air passage switching system includes a case forming an air passage having an opening portion, and a butterfly door for opening and closing the opening. The door includes a door body portion made of a material having a high rigidity, and a seal member ... | 02/27/2001 |
| 6190164 | Continuous heat treating furnace and atmosphere control method and cooling method in continuous heat treating furnace A continuous heat treatment furnace having one of a plurality of furnace zones except for first and last zones as a rapid cooling zone 11 for rapidly cooling a material by blowing an atmospheric gas, which comprises a roll-sealed chamber 3 partitioned at ... | 02/20/2001 |
| 6182613 | Self-assembly water heater enclosure and kit A water heater enclosure and kit having a box-like configuration, with a top panel, a pair of opposing side panels secured to the top panel at upper ends, front and rear braces which secure the lower ends of the side panels together, and a removable acces... | 02/06/2001 |
| 6179610 | Composite refractory tile for metallurgical furnace members In a metallurgical furnace of the type for re-heating metal billets and slabs, a pair of composite refractory tiles for insulating fluid-cooled structural members of the furnace. The tiles are a composite of a cast refractory shell which extends radially ... | 01/30/2001 |
| 6179707 | Ventilation nozzle for vehicles A ventilation nozzle for vehicles has a main duct and a secondary duct branching off therefrom. The ducts lead into two mutually separated blow-out openings and have controllable air adjusting devices. These adjusting devices are arranged in the area of t... | 01/30/2001 |
| 6179168 | Water heating system for water dispensing fountains A water heater system for a water dispensing fountain having a refrigerated water reservoir, is disclosed. The water heater system is comprised of a plastic molded hot water tank formed in a support membrane. A feed conduit is also formed in the membrane ... | 01/30/2001 |
| 6178924 | Method for upgrading a boiler A method for upgrading a boiler is provided. When operating at a first capacity, the boiler is used such that an open space is kept in radiation communication with a firebox. The open space is also kept as empty. A first set of water circulation tubes are... | 01/30/2001 |
| 6173682 | Tubesheet and tube protector device and a method for making such a device A tubesheet protector device is provided for use with a boiler having at least one tube for receiving a fluid extending therethrough. The tubes extend approximately perpendicularly from a tubesheet covering an inlet of the boiler. The tubesheet protector ... | 01/16/2001 |
| 6167846 | Catalytic combustion heater Multiple heat-receiving fluid passages, through which heat-receiving fluid flows, are arranged in layers in a fuel gas passage provided in a container. Multiple fins, on which an oxidation catalyst is carried, are provided on outer peripheries of the heat... | 01/02/2001 |
| 6168426 | Batch-type kiln A novel batch-type kiln and a method of use thereof are provided. The kiln comprises a kiln body and a heating chamber disposed within the kiln body, which has a heater disposed therein. A table is disposed at the bottom of the heating chamber, the table ... | 01/02/2001 |
| 6168518 | Vent structure with slotted rectangular outlet A vent structure with a slotted rectangular outlet includes a cylindrical connector section to mate with a cylindrical duct, a flared and curved transition section, and a rectangular outlet section. The structure is formed in such a manner that turbulence... | 01/02/2001 |
| 6164961 | Vertical conveying apparatus, continuous furnace having such a vertical conveying apparatus, and carrier therefor A vertical conveying apparatus is used particularly advantageously in a vertical continuous furnace, for example, in semiconductor production. Since rubbing contacts are avoided and there is thus barely any wear, continuous furnaces provided therewith are... | 12/26/2000 |
| 6164962 | Rapid cooling down method for regenerative thermal oxidizer A method of cooling a regenerative thermal oxidizer down rapidly includes the steps of increasing the cycle time of the heat exchangers once a decision has been made to shut the regenerative thermal oxidizer down. By increasing the cycle time, the regener... | 12/26/2000 |
| 6164963 | Semiconductor furnace processing vessel base A vertically oriented thermal processor supports semiconductor wafers within a vertical process chamber within a process tube about which a furnace heater is supported. A base plate support assembly mates with a processing vessel such that the interior su... | 12/26/2000 |
| 6162119 | Device for regulation of intake air in a vehicle The present invention relates to an apparatus for controlling the supply of intake air to a vehicle, incorporating a control unit which is arranged to indicate and initiate supply of intake air to at least three intake air regions in the vehicle which usu... | 12/19/2000 |
| 6161506 | Pulsed air combustion high capacity boiler A pulsed combustion high capacity boiler has air inlet flapper valves at an inlet air decoupler toward a combustion chamber, with a fuel supply and an ignitor upstream of the combustion chamber along a flow path. The combustion chamber is immersed in a wa... | 12/19/2000 |
| 6158396 | Water boiler with metal core This invention relates to a natural gas fired water boiler having a spirally wrapped finned heat exchanger surrounding a burner. The center of the heat exchanger being plugged by a metal core having a constantly reducing diameter truncated cone top.... | 12/12/2000 |
| 6159093 | Powered exhaust fan A powered exhaust fan for ventilating structures, especially well suited for roof ventilation, provides a motor driven fan assembly supported by a support assembly beneath an opening in a roof structure. The fan assembly further includes an air deflector ... | 12/12/2000 |
| 6159003 | Combustion process using separate injections of fuel and of oxidizer Combustion process in a furnace comprising a floor on which a charge to be heated is placed, and a roof lying above the charge, in which process the combustible fluid and the oxidizer fluid are injected separately between the surface of the charge and the... | 12/12/2000 |
| 6152084 | Viscous fluid type heat generator filled with regulated amount of viscous fluid A viscous fluid type supplementary heat generator having a housing assembly defining a fluid containing chamber including a hermetically sealed heat generating chamber in which a viscous fluid is filled to generate heat when the viscous fluid is subjected... | 11/28/2000 |
| 6152087 | Boiler tube protector and a method for attaching such protector to a boiler tube A boiler tube protector having a cylindrical or semi-cylindrical shape and adapted to be attached around an outer peripheral face of a boiler tube with mortar, which boiler tube protector includes a plurality of ceramic bodies closely arranged along their... | 11/28/2000 |
| 6148774 | Pour-in-place water heater foam insulation systems The present invention relates to water heater (12) construction whereby thermal insulation material is foamed in the clearance space between the tank and shell of the water heater, wherein the foamed insulation material has lesser uniformity in cell struc... | 11/21/2000 |
| 6149707 | Method for pyrocleaning metal components This is a method for pyrocleaning that degreases metal components using an oven, an oxidizer, a system gas supply, a system gas exhaust, and heat exchangers. The degreasing is accomplished by first transporting the metal components through the oven and ex... | 11/21/2000 |
| 6146134 | Oven-pallet alignment and profiled heating of preforms The present invention relates to a system for thermally profiling preforms prior to blow molding. The system includes a pallet for holding a plurality of preforms and a station, such as a heating oven, for thermally conditioning the preforms. In a first e... | 11/14/2000 |
| 6142772 | Movable tunnel kiln for making clay products and a system with the tunnel kiln The invention relates to a movable tunnel kiln for clay product manufacture and a production process system employing a tunnel kiln. Provided a kiln bottom of the tunnel kiln is fixed and takes a circular shape, the kiln body is circular and movable, road... | 11/07/2000 |
| 6142141 | Airflow diffuser for use with a forced-air space heater and a forced-air space heater using the same A unitary airflow diffuser for use with a forced-air space heater has a plurality of spurs radially extending from a hub. The spurs include one or more vanes for deflecting the airflow generated by fan blades within the space heater. A nozzle assembly is ... | 11/07/2000 |
| 6142773 | Enveloping device and vertical heat-treating apparatus for semiconductor process system The process tube of a vertical heat-treating apparatus for semiconductor wafers has a port at the bottom to be opened and closed by a lid. A sealing mechanism is arranged to seal the connecting portion between the flange of the port and the flange of the ... | 11/07/2000 |
| 6138613 | Ignition inhibiting gas water heater A gas water heater including a water container adapted to be heated by a gas burner; and an enclosure surrounding the burner, the enclosure having at least one entryway adapted to allow air and fumes to enter the enclosure without igniting flammable gases... | 10/31/2000 |
