Patent application number | Description | Published |
20090311119 | Screw Compressor Capacity Control - A screw compressor has a housing ( | 12-17-2009 |
20100135839 | SCREW COMPRESSOR WITH INTEGRAL BEARING COVER AND DISCHARGE PLENUM DIVIDER - A three rotor screw compressor is provided with a bearing cover, and an integral discharge case having a divider wall formed integrally with the bearing cover. The bearing cover closes bearing chambers for each of three rotor shafts, and the divider wall divides a plenum into two distinct chambers. By providing the divider wall, noise and efficiency losses from intermixing of two discharge flows from two separate compression chambers is eliminated. By forming a divider wall integrally with the bearing cover, leakage which has existed in the prior art is eliminated. | 06-03-2010 |
20100209280 | SCREW COMPRESSOR PULSATION DAMPER - A screw compressor ( | 08-19-2010 |
20140037483 | Method of Active Oil Management for Multiple Scroll Compressors - A method of operating a refrigeration system uses a plurality of compressors in connected parallel. The method includes returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein, separating the oil entrained in the refrigerant, and returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating. The method also includes connecting the oil sumps of all of the plurality of compressors such that oil is supplied from the lead compressor to at least one non-lead compressor of the plurality of compressors when the at least one non-lead compressor is operating. | 02-06-2014 |
20140037484 | Oil Equalization Configuration for Multiple Compressor Systems Containing Three or More Compressors - A method of operating a refrigeration system having at least three compressors, in which each compressor has an oil sump with oil at an oil level. The method includes separately connecting the oil sumps of the at least three compressors. Each separate connection allows oil flow only between the oil sumps of two of said compressors thereby preventing bypass flow. The method further includes flowing oil between oil sumps of the at least three compressors and along the separate connections to tend to equalize the oil levels among the oil sumps of the at least three compressors. | 02-06-2014 |
20140056725 | Suction Header Arrangement for Oil Management in Multiple-Compressor Systems - A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor. | 02-27-2014 |
20140241926 | Apparatus and Method for Oil Equalization in Multiple-Compressor Systems - A method of operating a refrigeration system, that includes providing a plurality of compressors connected in parallel. The plurality of compressors includes a plurality of scroll compressors. The method further includes returning circulated refrigerant to the plurality of compressors, the circulated refrigerant having oil entrained therein. Returning circulated refrigerant to the plurality of compressors includes returning more oil to one of the plurality of compressors than to another of the plurality of compressors. The method also includes supplying oil from one of the plurality of compressors to at least one other of the plurality of compressors. Supplying oil from one of the plurality of compressors includes supplying oil from the one of the plurality of compressors having an opening in its housing. A fitting is assembled into the opening. The fitting protrudes through the housing into an interior portion of the housing. | 08-28-2014 |
Patent application number | Description | Published |
20110030397 | START-UP PROCEDURE FOR REFRIGERANT SYSTEMS HAVING MICROCHEMICAL CONSENSOR AND REHEAT CYCLE - A refrigerant system has a condenser of microchannel design and construction and includes a reheat cycle. The reheat cycle includes a refrigerant flow control device, such as a three-way valve, for selectively routing at least a portion of refrigerant through a reheat heat exchanger from a location between a compressor and expansion device. A control for the refrigerant system selectively actuates this refrigerant flow control device to route at least a portion of refrigerant through the reheat heat exchanger at system start-up. | 02-10-2011 |
20120111030 | Low Ambient Operating Procedure For Cooling Systems With High Efficiency Condensers - A multiple refrigerant circuit cooling system includes at least a first refrigerant circuit and a second refrigerant circuit. Each of said first and second refrigerant circuits including a compressor, a condenser, an expansion device and an evaporator connected in refrigerant flow communication. The condensers of the first and second refrigerant circuits each including condenser coils having exterior surfaces and each condenser including at least one fan for drawing ambient air across the exterior surfaces of its respective condenser coil. The exterior surfaces of the condenser coil of the condenser of the first refrigerant circuit being in fluid communication with the fan of the condenser of the second refrigerant circuit to provide reduced airflow across the exterior surfaces of the condenser coils of the first refrigerant circuit at a low ambient temperature. | 05-10-2012 |
20140124166 | COMPRESSOR CRANK CASE HEATER ENERGY REDUCTION - A method of operating an air conditioning system includes cooling a selected space with the air conditioning system. The air conditioning system includes two or more compressors and two or more crank case heaters. Each crank case heater of the two or more crank case heaters is associated with a compressor of the two or more compressors. Operation of the two or more compressors is stopped, thus initiating operation of the two or more crank case heaters. The air conditioning system is switched to a conservation mode, including de-powering at least one compressor of the two or more compressors and an associated at least one crank case heater or the two or more crank case heaters thereby reducing energy consumption of the two or more crank case heaters. | 05-08-2014 |
20140331694 | MOVEMENT OF ELECTRONIC EXPANSION VALVE - Embodiments are directed to receiving, by a device comprising a processor, an indication that an air conditioning unit should turn on, commanding, by the device, a valve to open a specified extent based on the received indication, and subsequent to the valve opening to the specified extent, powering-on a piece of equipment that has an impact on refrigerant flow in the air conditioning unit. | 11-13-2014 |
Patent application number | Description | Published |
20130132250 | SYSTEMS AND METHODS FOR TRADING - The present invention is systems and methods for trading. In accordance with these systems and methods, a plurality of trader work stations that are connected to a central server may be provided. Through the work stations and central server, the systems and methods may perform participant qualification, instrument creation, bid/offer entry and response, when hit and take, workup, price retention, price improvement, request for market, bid/off restoration, price generation, position conversion, marking to market, and delivery functions. | 05-23-2013 |
20130232404 | Code Injection System and Method of Operation - A system for injecting code into an HTML file comprises a memory and a processor communicatively coupled to the memory. The memory stores code. The processor receives a request for content. The processor determines whether the request for content includes a request for compression and, if so, deletes the request for compression associated with the requested content. The processor retrieves the requested content. If the retrieved content is associated with an HTML file, then the processor injects the code into the HTML file to thereby modify the HTML file. The processor communicates the modified HTML file to a client. | 09-05-2013 |
Patent application number | Description | Published |
20080243622 | SYSTEMS AND METHODS FOR ELECTRONIC TRADING THAT PROVIDE INCENTIVES AND LINKED AUCTIONS - Systems and methods for electronic trading that provide incentives for gathering orders, making markets, and submitting block orders, and that enable linking of multiple auctions are provided. These systems and methods may first determine if the trader qualifies for an incentive. This determination may be made based upon one or more characteristics, such as price, size, duration, etc., of orders submitted to the trading system by the trader. Once the trader has been determined as being eligible for one or more incentives, the incentives that are provided may include reduced transaction costs, cash payments, priority or exclusivity in trading, self execution of transactions, etc. Similarly, before an order is eligible to be traded in an auction that is linked to another auction in the trading system, the order is preferably confirmed as qualifying to be auctioned in such a manner. Once an order is confirmed as qualifying for a linked auction, the auction is created and preferably linked to another auction based upon a characteristic of the order, such as price. In addition to being linked, information from each auction may be made available to traders in the other auctions. | 10-02-2008 |
20100306042 | SYSTEM AND METHOD THAT PROVIDE INCENTIVES TO QUALIFIED USERS OF AN ELECTRONIC TRADING SYSTEM - Systems and methods for electronic trading that provide incentives to users of a trading system. The systems and methods may monitor a trading activity of the user and determine that the orders submitted by the user over a period of time exceed a first pre-determined threshold. Systems and methods also determine that a spread of the plurality of orders exceeds a second pre-determined threshold. Based on these determinations, the user is designated as qualifying for a special status, which entitles the user to incentives in trading. Systems and methods apply the incentives to an order submitted by the user. One such incentive provides the user with a priority in a trading queue, where orders submitted by the user are executed in advance of other orders in the trading queue. | 12-02-2010 |
20130132251 | SYSTEMS AND METHODS FOR TRADING - The present invention is systems and methods for trading. In accordance with these systems and methods, a plurality of trader work stations that are connected to a central server may be provided. Through the work stations and central server, the systems and methods may perform participant qualification, instrument creation, bid/offer entry and response, when hit and take, workup, price retention, price improvement, request for market, bid/off restoration, price generation, position conversion, marking to market, and delivery functions. | 05-23-2013 |
20130132254 | SYSTEMS AND METHODS FOR TRADING - The present invention is systems and methods for trading. In accordance with these systems and methods, a plurality of trader work stations that are connected to a central server may be provided. Through the work stations and central server, the systems and methods may perform participant qualification, instrument creation, bid/offer entry and response, when hit and take, workup, price retention, price improvement, request for market, bid/off restoration, price generation, position conversion, marking to market, and delivery functions. | 05-23-2013 |
20140143114 | SYSTEM AND METHOD THAT PROVIDE INCENTIVES TO QUALIFIED USERS OF AN ELECTRONIC TRADING SYSTEM - Systems and methods for electronic trading that provide incentives to users of a trading system. The systems and methods may monitor a trading activity of the user and determine that the orders submitted by the user over a period of time exceed a first pre-determined threshold. Systems and methods also determine that a spread of the plurality of orders exceeds a second pre-determined threshold. Based on these determinations, the user is designated as qualifying for a special status, which entitles the user to incentives in trading. Systems and methods apply the incentives to an order submitted by the user. One such incentive provides the user with a priority in a trading queue, where orders submitted by the user are executed in advance of other orders in the trading queue. | 05-22-2014 |
20140149155 | SYSTEM AND METHOD FOR TRANSFERRING ITEMS WITH RESTRICTED TRANSFERABILITY - The invention is systems and methods for transferring items with restricted transferability. Initially, the systems and methods wait for a first consumer to make a request to transfer an item after having purchased the item from a provider. The systems and methods then send a request to transfer the item to the provider. This request may indicate inducements to the provider to authorize the transfer. If the transfer is authorized, the systems and methods then present information regarding the item to other consumers. This information may be presented as part of a bidding interface or as part of an advertising interface. Once the second consumer submits a winning bid for the item when the information is presented in a bidding interface, or an acceptable offer when the information is presented in an advertising interface, the transfer of the item can then be completed with or without the assistance of an intermediary. When the transfer is completed without the assistance of an intermediary, the first and second consumer may directly transfer the item and payment to each other. When the transfer is completed with the assistance of an intermediary, the first consumer may send the item to the intermediary and the second consumer may send payment to the intermediary. Once both the item and the payment have been received at the intermediary, the intermediary may send the item to the second consumer and all or part of the payment to the first consumer. | 05-29-2014 |
20140164177 | TRANSFERRING AN ITEM - The invention is systems and methods for transferring items with restricted transferability. Initially, the systems and methods wait for a first consumer to make a request to transfer an item after having purchased the item from a provider. The systems and methods then send a request to transfer the item to the provider. This request may indicate inducements to the provider to authorize the transfer. If the transfer is authorized, the systems and methods then present information regarding the item to other consumers. This information may be presented as part of a bidding interface or as part of an advertising interface. Once the second consumer submits a winning bid for the item when the information is presented in a bidding interface, or an acceptable offer when the information is presented in an advertising interface, the transfer of the item can then be completed with or without the assistance of an intermediary. When the transfer is completed without the assistance of an intermediary, the first and second consumer may directly transfer the item and payment to each other. When the transfer is completed with the assistance of an intermediary, the first consumer may send the item to the intermediary and the second consumer may send payment to the intermediary. Once both the item and the payment have been received at the intermediary, the intermediary may send the item to the second consumer and all or part of the payment to the first consumer. | 06-12-2014 |