...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7325748 | Ventilation system with humidity responsive ventilation controller A method of controlling ventilation including determining a current gradient, comparing the current gradient to a threshold and activating a device coupled to a ventilation controller if the current gradient is greater than or equal to the threshold. ... | 02/05/2008 |
| 7310966 | Universal direct current brushless air conditioning system A universal direct current brushless air conditioning system preferably includes a blower unit and a compressor unit. The blower unit preferably includes an evaporator, at least one inlet fan, at least one outlet vent, a direct current controller, a thermostatic exp... | 12/25/2007 |
| 7309376 | Method and installation for producing breathable air The invention relates to a process for producing respirable air comprising the following stages: treatment of compressed air comprising an air-drying operation; and rehumidification of the treated dry air. According to the invention, the rehumidification stage of th... | 12/18/2007 |
| 7197885 | Water separator with ribs In preferred aspects of the present invention, at least one rib is provided can be molded to an internal dividing wall in the interior of a water separator in an automotive HVAC unit. In more preferred aspects, a plurality of ribs is provided that are molded to or w... | 04/03/2007 |
| 7185503 | Conditioning system for a manufacturing machine, in particular a machine tool In a conditioning system for a manufacturing machine, in particular a machine tool, a machine tool framework is arranged inside a sealed casing. Ducts are arranged at machine tool regions to be thermally conditioned. The ducts comprise air flow outlets and are coupl... | 03/06/2007 |
| 7155318 | Air conditioning unit control to reduce moisture varying operations In a method of operating an air conditioning unit to reduce moisture varying operations, psychrometric chart data is accessed. In addition, a constraint is set on the relationship between the temperature of air supplied by the air conditioning unit and the relative ... | 12/26/2006 |
| 7078923 | Environmental test method and system In an environmental test system for controlling a temperature environment of a member to be tested at least from a low temperature environment to a high temperature environment, an air supplying unit supplies low dew point air to an inside of the test chamber. The l... | 07/18/2006 |
| 6978635 | Adsorption element and air conditioning device An adsorption element (81, 82) is formed by an alternating lamination of flat plate members (83) and corrugated plate members (84). Each flat plate member (83) is a given rectangle of L1/L2=2. In the adsorption eleme... | 12/27/2005 |
| 6978631 | Dehumidification system A dehumidification system including a controller having a humidity sensor switch that turns the dehumidifier, as well as the plurality of fans, on and off based on the ambient humidity of the area in which the dehumidification system is placed. Additionally, the deh... | 12/27/2005 |
| 6959875 | Humidity controller A humidity control apparatus is provided with two adsorbing elements. The humidity control apparatus alternately repeats a first operation for dehumidifying air in the first adsorbing element while regenerating the second adsorbing element and a second operation for... | 11/01/2005 |
| 6926079 | Humidity controller Methods and apparatus for controlling a climate control system for an enclosure, including a controller for operating a cooling system and a humidification system. The cooling system is operated to maintain the temperature of the air within the enclosure at a specif... | 08/09/2005 |
| 6415859 | Dehumidification/humidification air supply apparatus A dehumidified/humidified air supply apparatus includes two sets of air passages including heating units disposed at an upstream side thereof, a dehumidifying/humidifying unit having two portions disposed at a downstream side thereof and a blower. When de... | 07/09/2002 |
| 6079483 | Temperature/humidity controller for use in an air conditioner and a recording medium storing temperature/humidity control programs used therefor In a main controller for use in an air conditioner for controlling temperature/humidity of an intaken outside air, a controlling line setter (18) sets each of control lines (J1 -J5) on a psychrometric chart table (13), in which an ai... | 06/27/2000 |
| 6027030 | Humidfying system and procedures for its operation and application for conditioning the air in paint or lacquering rooms A humidifying system containing at least one compressed-air sprayer with a compressed-air input, a water input and an outlet valve for compressed air and water, compressed-air pressure regulators for regulating the pressure of the compressed air that is t... | 02/22/2000 |
| 5984002 | Temperature and humidity control apparatus and temperature and humidity prediction apparatus used therefor A temperature and humidity control apparatus includes a humidity control section for controlling humidity when a flow rate of a low temperature fluid in a cooling dehumidifier composed of a heat exchanger is determined; a heater control section for contro... | 11/16/1999 |
| 5901905 | Method and apparatus for controlling an operation of a humidifier A method and an apparatus for sensing an illuminance and a temperature around a humidifier and controlling a humidifying operation is disclosed. An illuminance inside a room in which a humidifying operation is applied by the humidifier is sensed by an ill... | 05/11/1999 |
| 5857616 | Control for fogger using pressurized air and water A system for regulating the amount of fog produced by foggers in a humidification system in which a control signal calling for a certain amount of humidification from foggers is used and wherein the foggers require pressurized air and water to produce fog... | 01/12/1999 |
| 5722587 | Method of controlling a humidifier so as to supply atomized water into rooms in accordance with volumes of rooms Disclosed is a method of controlling a humidifier. The method comprises the steps of recording a humidity of a room, setting a desirable humidity and the operating time by handling a key input section, recording a first present time, recording a second pr... | 03/03/1998 |
| 5632333 | Temperature and humidity adjusting apparatus and control method therefor A temperature and humidity adjusting apparatus has an air cooling and dehumidifying device, an air heater and a humidifier arranged in order. The air cooling and dehumidifying device includes thermoelements that use the Peltier effect. The humidifier incl... | 05/27/1997 |
| 5528905 | Contactor, particularly a vapour exchanger for the control of the air hygrometric content, and a device for air handling A contactor, particularly a vapor exchanger, working by the sorption or desorption of water vapor from or into an air stream (U) by an aqueous hygroscopic solution inside the contactor, is formed by at least a container (1, 1') with membrane walls (101) i... | 06/25/1996 |
| 5452762 | Environmental control system using poled diodes to allow additional controlled devices in existing four wire system An environmental control system for controlling heating, ventilation, humidification and air conditioning equipment located in plant area of a house includes a kit consisting of a remote control unit located in a living space of a house that is linked by ... | 09/26/1995 |
| 5450893 | Humidistat and interface The present invention provides for a humidistat which can be connected to a humidifier through a thermostat and its existing wiring. The thermostat has a plurality of output leads for a heating signal, a fan signal and/or a cooling signal. The humidistat ... | 09/19/1995 |
| 5364024 | Application independent, portable room temperature and humidity controller A portable temperature and humidity controller which has a temperature sensor, a humidity sensor, temperature and humidity setpoint device, a transformer, a male plug for insertion into a wall outlet and a female outlet into which the controlled air condi... | 11/15/1994 |
| 5353862 | Humidity control device of air conditioner A humidity control device of an air conditioner having an air conditioner body and being capable of controlling a humidity as well as conditioning air during heating, drying and like operations, comprises a target humidity setting unit for setting a targe... | 10/11/1994 |
| 5188169 | Heater-humidifier-dehumidifier unit An air treating unit comprises side-by-side compartments. An air cooling/dehumidifying mechanism and an air heating/humidifying mechanism are disposed in respective compartments. Selectively actuable fans are disposed in the compartments. The air cooling/... | 02/23/1993 |
| 5146977 | Environmental control in a confined workplace In an industrial building housing a production operation utilizing a liquid material exposed to the atmosphere, a relationship is maintained between the plant atmosphere and the liquid material whereby the atmosphere is not receptive to vaporized or atomi... | 09/15/1992 |
| 4974665 | Humidity control system A system for HVAC and humidification includes a control signal source which supplies two distinct control signals over two wires of a four wire link. The control signals are supplied to a temperature control signal source and for a fan/humidity control si... | 12/04/1990 |
| 4865118 | Heating, ventilating and air conditioning system A climate control system, heating, ventilating, air conditioning, designed for air conditioning and ventilating in which outside air is periodically sampled and may be used for improved ventilating and room cooling with outside air to reduce compressor du... | 09/12/1989 |
| 4862950 | Apparatus and method for controlling the environment in a substantially enclosed and pressurized work area such as a textile manufacturing plant A system and method for controlling the enivronment toward obtaining a prespecified absolute humidity within a substantially enclosed and pressurized work area such as a textile manufacturing plant is disclosed. A plurality of condition sensing signal gen... | 09/05/1989 |
| 4671456 | Air modulated in duct humidification and evaporative cooling system Water flow through air/water spray heads of an automatic in duct humidification and evaporative cooling system for buildings is modulated by a pneumatic control signal delivered to rear chambers of the system's spray heads through a pneumatic signal rever... | 06/09/1987 |
| 4572428 | In duct atomizing humidification and evaporative cooling system An in duct humidification and evaporative cooling system for industrial and commerical buildings is disclosed. Air and water under pressure are utilized to atomize water into minute droplets which rapidly evaporate and raise the level of relative humidity... | 02/25/1986 |
| 4399864 | Controlling room-air temperature and humidity in an air-conditioning system An air-conditioning system for a work space in which recirculated air is mixed with outside air and the mixture is passed through a washer. The controls for the system include an absolute moisture controller in the primary air supply downstream from the a... | 08/23/1983 |
| 4350286 | Humidity control apparatus A proportion of outside air to recirculated air is reduced when a sensed humidity in a vehicle compartment (14) drops below a first predetermined value. If the humidity is still below the first predetermined value after a certain amount of time has elapse... | 09/21/1982 |
| 4340112 | Vehicle air temperature control apparatus A main duct (12) contains a heater (19) and has an upper air outlet (22). A bypass duct (31) has an inlet (32) communicating with the main duct (12) upstream of the heater (19) and an outlet (33) communicating with the upper air outlet (22). A humidifier ... | 07/20/1982 |
| 4210278 | Apparatus for supplying conditioned air at a substantially constant temperature and humidity An apparatus for supplying conditioned air at a substantially constant temperature and humidity. The apparatus includes a supply duct coupled to a source of supply air for carrying the supply air therethrough. A return duct is coupled to the supply duct f... | 07/01/1980 |
| 4042016 | Environmental humidification and cooling system An environmental humidification and cooling system including an ultrasonic spray nozzle. Humidification is effected by spraying atomized water by the ultrasonic nozzle into the suction chamber of a fan. The cooling includes the ultrasonic spray nozzle spr... | 08/16/1977 |