Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8141372 | Method for operating a refrigerating device comprising evaporators which are connected in parallel and refrigerating device therefor A method for operating a refrigerator includes supplying an evaporator of a second compartment with coolant and flushing the coolant out of the evaporator of the second compartment so that it can be used for an evaporator of a first compartment, closing a coolant ci... | 03/27/2012 |
| 7802439 | Multichannel evaporator with flow mixing multichannel tubes Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems, heat exchangers, and multichannel tubes are provided which include internal configurations designed to promote mixing. The multichannel tubes include interior walls which form flow channels.... | 09/28/2010 |
| 7775055 | Sub-cooling unit for cooling system and method A system for cooling a medium includes a line having coolant flowing therein, and a sub-cooling unit in fluid communication with the line. The sub-cooling unit receives a portion of the coolant diverted from the line to cool coolant flowing in the line. A method of ... | 08/17/2010 |
| 7574869 | Refrigeration system with flow control valve A control valve to regulate flow of refrigerant through a refrigeration system that includes a plurality of refrigerated display cases. Each of the plurality of display cases includes a dedicated evaporator that cools return air by at least partially evaporating a r... | 08/18/2009 |
| 7342756 | Fault recognition in systems with multiple circuits A method for detecting compressor or system degradation or malfunction in a multiple circuit compressor system includes the steps of providing a multiple circuit compressor system including at least a first circuit and a second circuit; and comparing a first value c... | 03/11/2008 |
| 7337623 | Fuzzy-logic based controller to regulate aircraft temperature Temperature regulation by means of a PID regulation method can be associated with disadvantageous oscillations, overshooting and long control times. According to an exemplary embodiment of the present invention, during temperature regulation of a space, non-linear f... | 03/04/2008 |
| 7325411 | Compressor loading control A system has a number of parallel flowpath segments between a compressor and an evaporator. One or more valves selectively block and unblock at least one of the segments to provide capacity control. ... | 02/05/2008 |
| 7310970 | Refrigerant/oil separator An apparatus for separating an oil from a refrigerant has a housing, an inlet conduit for receiving a refrigerant/oil mixture, a separator medium, a refrigerant outlet conduit, and an oil outlet conduit. The inlet conduit has an inlet external to the housing and an ... | 12/25/2007 |
| 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 |
| 7299648 | Refrigeration system of air conditioning apparatuses with bypass line between inlet and outlet of compressor A refrigeration system of air conditioning apparatuses with a bypass line between the inlet and outlet of a compressor. The refrigeration system (1) has an expansion unit (10) to execute adiabatic expansion of refrigerant, an indoor unit (20) wi... | 11/27/2007 |
| 7281910 | Motor driven compressor A motor driven compressor having a motor for driving a compression mechanism includes a connecting portion for connecting between an external terminal for supplying electricity to the motor and a wire end portion of a stator of the motor. The connecting portion is l... | 10/16/2007 |
| 7278280 | Helium process cycle A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a ... | 10/09/2007 |
| 7272943 | Control method for multiple heat pump Disclosed herein is a control method for a multiple heat pump. In the control method, when one of multiple indoor units operates in the heating mode and the other indoor units shut down, electronic expansion valves of the shutdown indoor units are controlled to have... | 09/25/2007 |
| 7272948 | Heat pump with reheat and economizer functions A heat pump system operates in heating and cooling modes. The heat pump is provided with both a reheat function and economizer circuit. The economizer circuit provides augmented performance to the heat pump, while the reheat coil allows enhanced control over tempera... | 09/25/2007 |
| 7266959 | Cold climate air-source heat pump An improved cold climate air-source heat pump comprising at least a primary compressor, a booster compressor, a first heat exchanger associated with an indoor environment and a second heat exchanger associated with an outdoor environment and with one heat exchanger ... | 09/11/2007 |
| 7263846 | Refrigerant bypassing and filtering apparatus of air conditioner and method for controlling the same A refrigerant bypassing and filtering apparatus of an air conditioner is disclosed which is capable of effectively removing foreign matter such as slag produced in a refrigerant line, not only when the air conditioner is initially operated, but also during normal op... | 09/04/2007 |
| 7263848 | Heat pump system A heat pump is operable in a heating mode and a cooling mode and includes two identical heat exchangers. The heat exchangers alternate between operating as a condenser and an evaporator as the heat pump switches between the heating mode and the cooling mode. The hea... | 09/04/2007 |
| 7251943 | Semiconductor based air conditioning device The present invention mainly utilizes a specialized semiconductor ship, the so-called thermoelectric cooling chip, for producing the coldness. A cooling circulating member and a heat dissipating member are configured at the two sides of the thermoelectric cooling ch... | 08/07/2007 |
| 7249468 | Air conditioning system An air conditioning system has a compressor for compressing a liquid refrigerant to form a high pressure vapor which is fed to a condenser for cooling the vapor so that it returns to liquid state and fed to an evaporator. In the evaporator, the liquid is transformed... | 07/31/2007 |
| 7246507 | Air conditioner Provided is an air conditioner which has a separator with an oil tank for storing extra oil; a first oil return tube opening above the surface of the extra oil; and a second oil return tube opening below the surface of the extra oil. When the refrigeration cycle can... | 07/24/2007 |
| 7234318 | Outdoor, multiple stage, single pass and non-recirculating refrigeration system for rapid cooling of athletes, firefighters and others A multiple stage, single pass and non-recirculating refrigeration system is provided for either outdoor use or for use with temporary structures such as emergency firefighter tents. The refrigeration system utilizes, for example, three evaporative coils in series to... | 06/26/2007 |
| 7234314 | Geothermal heating and cooling system with solar heating A sealed well direct expansion geothermal heat exchange unit, whose sealed well can be placed in ground and/or in water, consisting of a conventional direct expansion, or other heat pump, system wherein the exterior refrigerant heat exchange lines are placed within ... | 06/26/2007 |
| 7222491 | Air conditioner and method for performing oil equalizing operation in the air conditioner An air conditioner including an outdoor unit including a first compressor and a second compressor connected in parallel to the first compressor, an outdoor unit connected in parallel to the outdoor unit, the outdoor unit including a first compressor and a second com... | 05/29/2007 |
| RE39625 | Boosted air source heat pump A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent... | 05/15/2007 |
| 7213405 | Two-stage linear compressor A refrigeration system includes a dual-piston linear compressor including a first piston disposed in a first cylinder and a second piston opposed to the first piston and disposed in a second cylinder. The first piston divides the first cylinder into a first suction ... | 05/08/2007 |
| 7204094 | Air conditioner An air conditioner having a plurality of outdoor units and a plurality of indoor units with a common piping connected via a common piping to transfer refrigerant therebetween, the air conditioner including a first outdoor unit to provide heat, a second outdoor unit ... | 04/17/2007 |
| 7204504 | Process for coupling a trailer to a motor vehicle In the case of a method for hitching a trailer (2) to a motor vehicle (1), in particular a semitrailer to a semitrailer towing machine, an image sensor (5) is provided which is arranged in a hitching region (6) in such a manner that image... | 04/17/2007 |
| 7197886 | Heat reclaim refrigeration system and method A heat reclaim refrigeration system uses a first compressor to elevate the amount of latent heat reclaimable by the system and to reclaim this heat using heat reclaim means, such as heat reclaim coils, for practical applications, such as heating a building. In addit... | 04/03/2007 |
| 7191604 | Heat pump dehumidification system A heat pump dehumidification system comprised of one of an air source heat pump system, a water source heat pump system, and a direct expansion heat pump system, with an extra interior air heat exchange means situated between the system's compressor's hot refrigeran... | 03/20/2007 |
| 7193342 | Apparatus for cooling of electrical devices Electrical devices such as motors and generators create heat as they operate. This can lead to lower performance and life. Therefore, it is important to provide cooling for such devices. This is particularly true in heavy duty applications such as earthmoving or oth... | 03/20/2007 |
| 7191605 | Floating loop method for cooling integrated motors and inverters using hot liquid refrigerant A method for cooling vehicle components using the vehicle air conditioning system comprising the steps of: tapping the hot liquid refrigerant of said air conditioning system, flooding a heat exchanger in the vehicle component with said hot liquid refrigerant, evapor... | 03/20/2007 |
| 7178353 | Thermal control system and method A system and method for controlling the temperature of a process tool uses the vaporizable characteristic of a refrigerant that is provided in direct heat exchange relation with the process tool. Pressurized refrigerant is provided as both condensed liquid and in ga... | 02/20/2007 |
| 7165420 | Apparatus for converting refrigerant pipe of air conditioner An apparatus for converting a refrigerant pipe of an air conditioner comprises: a valve housing installed at a position where respective refrigerant discharge pipes of plural compressors are put together, having a valve space portion therein, and having a first refr... | 01/23/2007 |
| 7165419 | Apparatus for converting refrigerant pipe of air conditioner An apparatus for converting a refrigerant pipe of an air conditioner comprises: a valve housing installed at a position where respective refrigerant discharge pipes of plural compressors are put together, having a valve space portion therein, and composed of a first... | 01/23/2007 |
| 7162873 | Method of running a condenser for liquidation of steam or vapor The present invention relates to a system in which a process of condensing steam or vapor is used for cooling or heating an ambient environment. An increase in the effectiveness of the condensing process is achieved by adjusting the input of steam or vapor into the ... | 01/16/2007 |
| 7155920 | Refrigerant cycle with tandem compressors and multiple condensers A tandem compressor system is utilized that receives refrigerant from a common suction manifold, and from a common evaporator. From the compressors, the refrigerant passes to a plurality of condensers, with each of the condensers being associated with a separate zon... | 01/02/2007 |
| 7146823 | Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means A sub-surface geothermal direct exchange sub-surface tubing installation means, comprising situating certain specified tubing sizes for certain specified horizontal distances and for certain specified depths within each of a horizontally oriented trench and a vertic... | 12/12/2006 |
| 7134294 | Method and apparatus for refrigeration system control having electronic evaporator pressure regulators A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls t... | 11/14/2006 |
| 7119531 | Pusher in an autohandler for pressing a semiconductor device A pusher provided in an autohandler presses a semiconductor device toward a socket to allow the electrodes thereof to contact the socket pins of the socket during testing the electric characteristics of the semiconductor device. The pusher includes a rigid pusher bo... | 10/10/2006 |
| 7111471 | Refrigerant cycle apparatus The present invention aims to prevent the occurrence of liquid compression at the second rotary compression element before it happens while improving the compression efficiency with an intermediate cooling circuit in a refrigerant cycle apparatus which comprises an ... | 09/26/2006 |
