Kudaravalli
Ravikumar Kudaravalli, Shelby Township, MI US
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20150251288 | DEVICE FOR SUPPLYING SUBCOOLED LIQUID CRYOGEN TO CUTTING TOOLS - A method for subcooling liquid cryogen that is used by a cutting tool uses the steps of dividing liquid phase cryogen between a subcooler feed line and tool feed line. The cryogen in the subcooler feed line is expanded to lower the pressure and decrease the temperature of the cryogen, and the expanded liquid cryogen from the subcooler feed line is added to the interior of a subcooler. A heat exchanger is positioned in the subcooler in contact with the expanded liquid cryogen. The cryogen in the tool feed line is subcooled below its saturation temperature by passing the cryogen through the heat exchanger, and the subcooled cryogen from the heat exchanger is supplied to the cutting tool. As a result, the subcooled cryogen supplied to the cutting tool is substantially 100% liquid cryogen without any vapor content. | 09-10-2015 |
Ravikumar V. Kudaravalli, Manassas, VA US
Patent application number | Description | Published |
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20090241953 | VENTILATOR WITH PISTON-CYLINDER AND BUFFER VOLUME - A mechanical ventilator is provided with a piston-cylinder for performing an air displacement function and a buffer volume and associated output valve for providing an air metering function. The piston-cylinder may comprise a reciprocating arrangement, in which compressed air is supplied to the buffer volume with each stroke of the piston. | 10-01-2009 |
20130068220 | SYSTEMS AND METHODS FOR GENERATING LIQUID OXYGEN FOR PORTABLE USE - A system for generating liquid oxygen (LOX) for portable use by a patient includes a patient portable unit configured to store LOX and deliver gaseous oxygen (GOX) to the patient, and a mobile base unit configured to generate LOX by cryogenic separation of air and deliver the generated LOX to the patient portable unit. The mobile base unit includes a compressor that receives and pressurizes air, a purifier that removes impurities from the pressurized air, a heat exchanger that cools the purified air, a cryocooler that further cools the air to cryogenic temperatures, and a distillation unit that separates the cryogenic air into multiple products, including LOX and one or more cold byproducts. The separated LOX is communicated toward storage, and at least one of the cold byproducts is passed through the heat exchanger to facilitate heat transfer from incoming purified air to the at least one cold byproduct in order to cool the purified air. | 03-21-2013 |
Ravikumar Venkata Kudaravalli, Manassas, VA US
Patent application number | Description | Published |
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20110023879 | Ventilator Based On A Fluid Equivalent Of The "Digital To Analog Voltage" Concept - The present invention is directed to a ventilator that, in one embodiment, uses one or more valve banks having precalibrated orifices to perform real time control of flow metering devices and, in a second embodiment, uses a choked flow orifice and upstream gas pressure regulator to generate a desired flow trajectory. | 02-03-2011 |
Sridhar Kudaravalli, Chicago, IL US
Patent application number | Description | Published |
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20090239908 | METHODS OF TREATING PSYCHOSIS AND SCHIZOPHRENIA BASED ON POLYMORPHISMS IN THE CNTF GENE - This invention relates to the use of the association between the 103 G>A polymorphism in the CNTF gene to determine antipsychotic treatment strategies in patients with psychotic disorders. | 09-24-2009 |
20100184798 | Methods to Predict Cholesterol Elevations during Immunosuppressant Therapy - This invention provides methods to predict the degree of elevation of serum cholesterol levels in patients treated with immunosuppressive medication. This invention also provides treatment strategies based on these predictions and kits to carry out these methods. | 07-22-2010 |