Patents by Inventor James D. Freihaut
James D. Freihaut has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080312069Abstract: Volatile organic compounds, for example organophosphonate compounds including chemical warfare agents, pesticides, and solvents, are decomposed by contacting the compounds with either a manganese oxide catalyst in the presence of visible light or a catalyst material selected from the group consisting of vanadium, vanadium oxide, manganese oxide and mixtures thereof deposited upon a catalyst support that is heated to at least 300 C. The catalyst material may be regenerated by a process selected from the washing with water, washing with a solvent, heating, exposing to light, purging with oxygen, purging with a reactive gas, exposing to microwave radiation, and combinations thereof. The catalyst composition may be used as an air filter in a vehicle, a building or a personnel protection device, such as a gas mask.Type: ApplicationFiled: July 18, 2003Publication date: December 18, 2008Inventors: Sunita Satyapal, James D. Freihaut
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Patent number: 7399331Abstract: A system is disclosed which incorporates low pressure drop contaminant removal from gas phases or streams, which advantageously can be used to enhance efficiency, improve humidity characteristics, and reduce capital cost of air handing systems such as HVAC systems and the like. Placement of the low pressure drop contaminant removal mechanism for enhancing effectiveness of same is also disclosed.Type: GrantFiled: May 28, 2004Date of Patent: July 15, 2008Assignee: Carrier CorporationInventors: Gregory M. Dobbs, Timothy Obee, Darren S. Sheehan, James D. Freihaut, Stephen O. Hay, Norberto O. Lemcoff, Joseph J. Sangiovanni, Mary Saroka, Robert C. Hall
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Patent number: 7152670Abstract: Existing plate-type heat exchangers typically include plates that are constructed of metal or paper, which are only capable of transferring a limited amount of moisture, if any, from one side of the plate to the other side. The present invention is a plate-type heat exchanger wherein the plates are constructed of ionomer membranes, such as sulfonated or carboxylated polymer membranes, which are capable of transferring a significant amount of moisture from one side of the membrane to the other side. Incorporating such ionomer membranes into a plate-type heat exchanger provides the heat exchanger with the ability to transfer a large percentage of the available latent heat in one air stream to the other air streams. The ionomer membrane plates are, therefore, more efficient at transferring latent heat than plates constructed of metal or paper.Type: GrantFiled: December 5, 2003Date of Patent: December 26, 2006Assignee: Carrier CorporationInventors: Gregory M. Dobbs, James D. Freihaut
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Publication number: 20040140085Abstract: Existing plate-type heat exchangers typically include plates that are constructed of metal or paper, which are only capable of transferring a limited amount of moisture, if any, from one side of the plate to the other side. The present invention is a plate-type heat exchanger wherein the plates are constructed of ionomer membranes, such as sulfonated or carboxylated polymer membranes, which are capable of transferring a significant amount of moisture from one side of the membrane to the other side. Incorporating such ionomer membranes into a plate-type heat exchanger provides the heat exchanger with the ability to transfer a large percentage of the available latent heat in one air stream to the other air streams. The ionomer membrane plates are, therefore, more efficient at transferring latent heat than plates constructed of metal or paper.Type: ApplicationFiled: December 5, 2003Publication date: July 22, 2004Inventors: Gregory M. Dobbs, James D. Freihaut
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Publication number: 20040118554Abstract: Existing plate-type heat exchangers typically include plates that are constructed of metal or paper, which are only capable of transferring a limited amount of moisture, if any, from one side of the plate to the other side. The present invention is a plate-type heat exchanger wherein the plates are constructed of ionomer membranes, such as sulfonated or carboxylated polymer membranes, which are capable of transferring a significant amount of moisture from one side of the membrane to the other side. Incorporating such ionomer membranes into a plate-type heat exchanger provides the heat exchanger with the ability to transfer a large percentage of the available latent heat in one air stream to the other air streams. The ionomer membrane plates are, therefore, more efficient at transferring latent heat than plates constructed of metal or paper.Type: ApplicationFiled: June 27, 2003Publication date: June 24, 2004Inventors: Gregory M. Dobbs, James D. Freihaut
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Patent number: 6684943Abstract: Existing plate-type heat exchangers typically include plates that are constructed of metal or paper, which are only capable of transferring a limited amount of moisture, if any, from one side of the plate to the other side. The present invention is a plate-type heat exchanger wherein the plates are constructed of ionomer membranes, such as sulfonated or carboxylated polymer membranes, which are capable of transferring a significant amount of moisture from one side of the membrane to the other side. Incorporating such ionomer membranes into a plate-type heat exchanger provides the heat exchanger with the ability to transfer a large percentage of the available latent heat in one air stream to the other air streams. The ionomer membrane plates are, therefore, more efficient at transferring latent heat than plates constructed of metal or paper.Type: GrantFiled: May 31, 2002Date of Patent: February 3, 2004Assignee: Carrier CorporationInventors: Gregory M. Dobbs, James D. Freihaut
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Patent number: 6596915Abstract: Volatile organic compounds, for example organophosphonate compounds including chemical warfare agents, pesticides, and solvents, are decomposed by contacting the compounds with either a manganese oxide catalyst in the presence of visible light or a catalyst material selected from the group consisting of vanadium, vanadium oxide, manganese oxide and mixtures thereof deposited upon a catalyst support that is heated to at least 300° C. The catalyst material may be regenerated by a process selected from the washing with water, washing with a solvent, heating, exposing to light, purging with oxygen, purging with a reactive gas, exposing to microwave radiation, and combinations thereof. The catalyst composition may be used as an air filter in a vehicle, a building or a personnel protection device, such as a gas mask.Type: GrantFiled: September 20, 2000Date of Patent: July 22, 2003Assignee: Carrier CorporationInventors: Sunita Satyapal, James D. Freihaut
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Patent number: 6539731Abstract: A humid gas stream is dehumidified by bringing that stream into contact with the front surface of a hydrophilic capillary condenser layer that captures the water and moves it adjacent the rear surface of the capillary layer. An osmotic layer, such as a semi-permeable membrane, is disposed on the rear surface of the condenser layer, and an osmotic fluid having a low concentration of water therein, is disposed adjacent the osmotic layer. An osmotic driving force, resulting from the water concentration gradient across the osmotic layer, transports the condensed water from the condensing layer through the thickness of the osmotic layer and into an osmotic fluid. The osmotic layer also inhibits the osmotic fluid from flowing into the condenser layer.Type: GrantFiled: March 30, 2001Date of Patent: April 1, 2003Inventors: Arthus S. Kesten, Sunita Satyapal, James D. Freihaut, Carol M. Hawk
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Publication number: 20020185266Abstract: Existing plate-type heat exchangers typically include plates that are constructed of metal or paper, which are only capable of transferring a limited amount of moisture, if any, from one side of the plate to the other side. The present invention is a plate-type heat exchanger wherein the plates are constructed of ionomer membranes, such as sulfonated or carboxylated polymer membranes, which are capable of transferring a significant amount of moisture from one side of the membrane to the other side. Incorporating such ionomer membranes into a plate-type heat exchanger provides the heat exchanger with the ability to transfer a large percentage of the available latent heat in one air stream to the other air streams. The ionomer membrane plates are, therefore, more efficient at transferring latent heat than plates constructed of metal or paper.Type: ApplicationFiled: May 31, 2002Publication date: December 12, 2002Applicant: Carrier CorporationInventors: Gregory M. Dobbs, James D. Freihaut
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Publication number: 20020139127Abstract: A humid gas stream is dehumidified by bringing that stream into contact with the front surface of a hydrophilic capillary condenser layer that captures the water and moves it adjacent the rear surface of the capillary layer. An osmotic layer, such as a semi-permeable membrane, is disposed on the rear surface of the condenser layer, and an osmotic fluid having a low concentration of water therein, is disposed adjacent the osmotic layer. An osmotic driving force, resulting from the water concentration gradient across the osmotic layer, transports the condensed water from the condensing layer through the thickness of the osmotic layer and into an osmotic fluid. The osmotic layer also inhibits the osmotic fluid from flowing into the condenser layer.Type: ApplicationFiled: March 30, 2001Publication date: October 3, 2002Inventors: Arthur S. Kesten, Sunita Satyapal, James D. Freihaut, Carol M. Hawk
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Patent number: 6358374Abstract: A contaminated gas that is to be cleaned, such as contaminated air, is passed through an adsorbent bed to remove gaseous contaminants. An enclosure having a fixed volume is then created around the adsorbent bed. Included within the enclosure is a photocatalytic gas purifier. The adsorbent bed is heated to release the contaminants into the fixed volume to create a high concentration of contaminants in the gas within the fixed volume. The now highly contaminated fixed volume of gas is recirculated through the heated adsorbent bed and photocatalytic gas purifier. The gas purifier oxidizes the contaminants at a high oxidation rate due to the high contaminant concentration level. The enclosure is then opened and the adsorbent bed, now regenerated and at its original temperature, is ready to again receive and clean contaminated gas.Type: GrantFiled: December 17, 1999Date of Patent: March 19, 2002Assignee: Carrier CorporationInventors: Timothy N. Obee, Stephen O. Hay, James D. Freihaut, Joseph J. Sangiovanni, Robert J. Hall
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Patent number: 6233824Abstract: Cylindrical heat exchangers are typically constructed of a plurality of spiral passageways created by multiple concentric annuluses, with increasing diameters, overlaying one another. Each passageway, however, typically includes a corrugated sheet between such circular layers, and the corrugated sheet acts as an obstruction, thereby decreasing the pressure of an air stream as it passes therethough. The present invention is a cylindrical heat exchanger having a plurality of spiral passageways created by a spirally wound rectangular sheet, wherein the overlapping spiral layers, that are formed by the winding the rectangular sheet, are spaced apart by a plurality of radially aligned dividers. The dividers, along with an open interface layer that is interposed between the spiral layers, maintain the constant gap between the spirals. Therefore, manufacturing the cylindrical heat exchanger with spiral rather than concentric layers improves the process of manufacturing such devices.Type: GrantFiled: December 22, 1999Date of Patent: May 22, 2001Assignee: Carrier CorporationInventors: Gregory M. Dobbs, James D. Freihaut
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Patent number: 5997825Abstract: A system for the in situ destruction of compressible refrigerant from a refrigerant containing apparatus includes a refrigerant recovery apparatus (30) for receiving refrigerant from the refrigerant containing apparatus (20) and a refrigerant disposal apparatus (100) for destroying refrigerant received from the recovery apparatus. The disposal apparatus (100) includes a storage tank (110) for collecting refrigerant received from the recovery apparatus (30) and a reactor device (130) for receiving refrigerant collected in said storage tank and destroying the refrigerant received from the storage tank. The reactor device includes a reaction chamber (135) housing a replaceable reactor core (140) containing a reagent functional to chemically react with the received refrigerant. A heater device (138) is provided in operative association with the reaction chamber for heating the reactor core (140) to a desired temperature at which the reagent will most effectively react with the refrigerant.Type: GrantFiled: October 17, 1996Date of Patent: December 7, 1999Assignee: Carrier CorporationInventors: Sunita Satyapal, Tobias H. Sienel, H. Harvey Michels, James D. Freihaut