Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7260948 | Compressor diagnostic system A system includes a compressor receiving fluid from a low-pressure side of a circuit and outputting fluid to a high-pressure side of the circuit. The system also includes a motor drivingly connected to the compressor, at least one high-side sensor operable to measur... | 08/28/2007 |
| 7179069 | Motor compressor lubrication A rotary machine is powered by a drive shaft having a bore extending through it. A single piece lubricant flinger is disposed within the bore to form a lubricant pump. The lubricant flinger includes an upper plate located within the bore and a washer located adjacen... | 02/20/2007 |
| 7086151 | Powder metal scrolls Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described. ... | 08/08/2006 |
| 7074013 | Dual volume-ratio scroll machine The present invention provides the art with a scroll machine which has a plurality of built-in volume ratios along with their respective design pressure ratios. The incorporation of more than one built-in volume ratio allows a single compressor to be optimized for m... | 07/11/2006 |
| 7070401 | Scroll machine with stepped sleeve guide An axial complaint mounting system for a scroll machine positions the centroid reaction of the mounting system toward the top of a mounting bore extending through the axial compliant scroll member. The mounting system defines a first clearance located near the top o... | 07/04/2006 |
| 7040877 | Compressor valve plate A valve plate assembly includes an upper valve plate, a lower valve plate, an annular spacer and a center spacer. The annular spacer is located between the upper and lower valve plates and around the outer periphery of the upper and lower valve plates. The center sp... | 05/09/2006 |
| 7010926 | Condensing unit performance simulator and method A system and method for determining thermal performance of a condensing unit includes selecting the condensing unit from a condensing unit database and a compressor from a compressor database. Condensing unit characteristics and compressor characteristics are proces... | 03/14/2006 |
| 6931867 | Cooling system with isolation valve A cooling system including a pulse-width modulated variable capacity compressor operable between on-cycles and off-cycles, and in electrical communication with the compressor and operable to respectively synchronize opening and closing thereof with on- and off-cycle... | 08/23/2005 |
| 6928389 | Compressor performance calculator A system and method for calculating the performance of a compressor wherein the user can select a compressor from a database or retrieve a list of compressors to select from based on application conditions. The system calculates the capacity, power, current, mass fl... | 08/09/2005 |
| 6866941 | Marine coating A compressor having a corrosive resistant coating is disclosed. The coating has a first spray coated metallic layer. A sealant layer is disposed over the sprayed metallic coating which has an organic component, a solvent component, and an inorganic phase. ... | 03/15/2005 |
| 6860315 | Green sand casting method and apparatus An apparatus and method for casting metallic components is disclosed. The apparatus has a vertical parting line and a gate configuration which reduces defects within the cast components. ... | 03/01/2005 |
| 6840271 | Compressor discharge valve retainer A discharge valve retainer is manufactured from powder metal using FLC4608, FL4405, FC0205 or FC0208 material. The finisher retainer has a density of approximately 6.8 to 7.6 gm/cc. The retainer is carbonitrided, quenched and tempered to achieve a surface hardness o... | 01/11/2005 |
| 6823891 | Compressor suction reed valve A suction reed valve includes a central ring shaped body having a pair of tabs extending radially outward. One of the pair of tabs is fixed to a valve plate and the other tab is free to move. A necked down region is located between the fixed tab and the central ring... | 11/30/2004 |
| 6823680 | Remote data acquisition system and method A data acquisition system and method includes monitoring a cooling system having a refrigerant compressor, evaporator, and condensor, and employs a number of sensors to monitor various operating parameters of the system. A database stores predefined operating parame... | 11/30/2004 |
| 6821092 | Capacity modulated scroll compressor A scroll compressor has a biasing chamber which contains a pressurized fluid. The pressurized fluid within the chamber biases the two scroll members together. A valve assembly is in communication with this biasing chamber and releases the pressurized fluid on demand... | 11/23/2004 |
| 6775995 | Condensing unit performance simulator and method A method of determining thermal performance of a condenser and a condensing unit within a cooling system includes selecting the condenser and the condensing unit from a condensing unit database. A compressor is selected from a compressor database based on at least o... | 08/17/2004 |
| 6773242 | Scroll compressor with vapor injection A scroll compresssor incorporates a vapor injection system where only one vapor injection port is utilized. The single vapor injection port injects refrigerant vapor into two of the initially formed enclosed spaces. The scrolls of the scroll compressor are designed ... | 08/10/2004 |
| 6761541 | Foot plate for hermetic shell A foot plate for mounting a compressor includes a mounting plate, a pair of upwardly extending flanges, a pair of downwardly extending flanges and an upwardly extending mounting flange. The mounting flange is utilized to secure a compressor by being attached to the ... | 07/13/2004 |
| 6758050 | Compressor diagnostic system A refrigeration/air conditioning system includes a compressor having a motor protector which stops the compressor's motor when it senses an out of specification condition. A diagnostic system of the refrigeration/air conditioning system monitors the status of the mo... | 07/06/2004 |
| 6758051 | Method and system for diagnosing a cooling system A cooling system includes a compressor having a motor protector which stops the compressor's motor when it senses an out of specification condition. A diagnostic system of the cooling system monitors the status of the motor protector. The diagnostic system includes ... | 07/06/2004 |
| 6745584 | Digital scroll condensing unit controller A cooling system controller controls the capacity of a variable capacity compressor based upon the temperature of a housing being cooled, the suction pressure of the compressor or both of these criteria. The cooling system controller is capable of controlling either... | 06/08/2004 |
| 6709247 | Scroll compressor having a deflectable bearing housing for shaft alignment A compressor is driven by a drive shaft rotatably supported by a main bearing housing and a lower bearing housing. The main bearing housing positions a main bearing at or near a nodal point of the drive shaft during vibration by the drive shaft. The main bearing hou... | 03/23/2004 |
| 6709244 | Diagnostic system for a compressor A scroll type machine incorporates a unique system for monitoring the status of a valve which is used to control the capacity of the compressor. The valve functions to open and close a fluid passage between two areas of the compressor for capacity modulation. By mon... | 03/23/2004 |
| 6706415 | Marine coating A compressor having a corrosive resistant coating is disclosed. The coating has a first spray coated metallic layer. A sealant layer is disposed over the sprayed metallic coating which has an organic component, a solvent component, and an inorganic phase. ... | 03/16/2004 |
| 6705848 | Powder metal scrolls Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described. ... | 03/16/2004 |
| 6679072 | Diagnostic system and method for a cooling system A diagnostic system and method for a cooling system includes producing a control signal for adjusting a valve position of a regulator valve as a demand for cooling, as well as providing an ambient temperature measurement, coil inlet temperature measuremen... | 01/20/2004 |
| 6679683 | Dual volume-ratio scroll machine The present invention provides the art with a scroll machine which has a plurality of built-in volume ratios along with their respective design pressure ratios. The incorporation of more than one built-in volume ratio allows a single compressor to be opti... | 01/20/2004 |
| 6672846 | Capacity modulation for plural compressors A compressor system includes a pair of compressors located in a common shell. A common drive shaft drives both compressors and the drive shaft is powered by a single motor. One or both of the compressors can be equipped with a pulse width modulated capaci... | 01/06/2004 |
| 6672090 | Refrigeration control A system including an evaporator, a variable capacity compressor coupled in fluid communication with the evaporator, a condenser coupled in fluid communication between the compressor and the evaporator, an expansion valve disposed intermediate the condens... | 01/06/2004 |
| 6662578 | Refrigeration system and method for controlling defrost A refrigeration system and method for controlling defrost includes a refrigeration case, an evaporator disposed in the refrigeration case, and a condenser and compressor coupled in fluid communication with the evaporator. The condenser is disposed on the ... | 12/16/2003 |
| 6662583 | Adaptive control for a cooling system A method and controller for a refrigerant pressure effecting component of a cooling system includes providing closed loop control over a pressure effecting component based on an error signal, performing a control algorithm that includes at least one progr... | 12/16/2003 |
| 6655172 | Scroll compressor with vapor injection A refrigeration system has a compressor which incorporates fluid injection into one or more of the fluid pockets. A source of fluid for injection into the pockets is attached directly to the shell of the compressor to eliminate the need for having fluid p... | 12/02/2003 |
| 6619936 | Scroll compressor with vapor injection A scroll compressor incorporates a vapor injection system where, only one vapor injection port is utilized. The single vapor injection port injects refrigerant vapor into two of the initially formed enclosed spaces. The scrolls of the scroll compressor ar... | 09/16/2003 |
| 6616415 | Fuel gas compression system A fuel gas compression system includes a system which operates on direct current, a system which operates on alternating current and a system which is capable of operating on either direct current or alternating current. In the system that operates on eit... | 09/09/2003 |
| 6615594 | Compressor diagnostic system A compressor includes a motor protector which stops the compressor's motor when it senses an out of specification condition. A diagnostic system monitors the status of the motor protector. The diagnostic system includes logic circuitry that diagnoses the ... | 09/09/2003 |
| 6615598 | Scroll machine with liquid injection A refrigeration circuit includes a scroll compressor, a condenser and an evaporator connected in a closed loop. A liquid injection system takes liquid refrigerant from the refrigerant circuit and injects it into a suction line leading to the compressor to... | 09/09/2003 |
| 6601397 | Digital scroll condensing unit controller A cooling system controller controls the capacity of a variable capacity compressor based upon the temperature of a housing being cooled, the suction pressure of the compressor or both of these criteria. The cooling system controller is capable of control... | 08/05/2003 |
| 6582211 | Discharge valve A compressor assembly includes a shell which defines a discharge chamber. A discharge valve assembly is attached to the shell in communication with the discharge chamber. The discharge valve assembly includes a stamped or coined valve seat, a drawn tubula... | 06/24/2003 |
| 6575710 | Compressor with blocked suction capacity modulation A capacity control system has a valve which closes off the inlet to one or more of the cylinders in a multicylinder compressor. The valve is motivated by fluid at discharge pressure which reacts against a piston to close the inlet. An orifice is positione... | 06/10/2003 |
| 6572352 | Two-piece powdered metal suction fitting A suction fitting for a scroll machine is disclosed. The suction fitting is formed by a powder metal suction plate and a cast suction tube. The suction fitting is configured so that the powder metal suction plate is not subject to pressure gradients cause... | 06/03/2003 |
