Patents by Inventor Jerry D. Edwards
Jerry D. Edwards 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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Patent number: 8904814Abstract: A system and method for determining a fault condition in a compressor is provided. The current of a motor drive powering the compressor and the outdoor ambient temperature are measured and used to determine if a fault condition or a potential fault condition is present in the compressor. If a fault condition is determined to be present, the compressor can be shutdown to avoid damage to the compressor. If a potential fault condition is determined, remedial action can be taken to attempt to prevent the fault condition from occurring and shutting down the compressor.Type: GrantFiled: June 29, 2009Date of Patent: December 9, 2014Assignee: Bristol Compressors, International Inc.Inventors: John W. Tolbert, Jr., Bruce A. Moody, Jerry D. Edwards, David R. Gilliam, Eugene K. Chumley, Richard C. Denzau, Scott Hix, Justin M. Toner, Mark R. Trent, Tim M. Wampler, John R. Williams
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Patent number: 8790089Abstract: A system and method is provided for controlling the speed of the compressor to ensure adequate lubrication oil is provided to the components of the compressor. During operation of a capacity control program for the compressor, a preselected operating parameter of the compressor or motor drive is measured. The measured preselected operating parameter is compared to a preselected range for the operating parameter. If the measured preselected operating parameter is not within the preselected range, the output frequency of the capacity control program can be increased to provide proper lubrication for the components of the compressor.Type: GrantFiled: June 29, 2009Date of Patent: July 29, 2014Assignee: Bristol Compressors International, Inc.Inventors: Bruce A. Moody, Eugene K. Chumley, Jerry D. Edwards, Tim M. Wampler, John W. Tolbert, Jr.
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Patent number: 8672642Abstract: A system and method for starting a compressor is provided. An amount of liquid refrigerant that is located in an oil sump of the compressor is determined. Using the determined amount of liquid refrigerant, a starting algorithm for the compressor is selected. The selected starting algorithm is configured to remove the determined amount of liquid refrigerant from the oil sump before the compressor reaches a preselected operating speed. The selected starting algorithm is then executed to start the compressor.Type: GrantFiled: June 29, 2009Date of Patent: March 18, 2014Assignee: Bristol Compressors International, Inc.Inventors: John W. Tolbert, Jr., Bruce A. Moody, Eugene K. Chumley, Richard C. Denzau, Jerry D. Edwards, David R. Gilliam, Scott Hix, Justin M. Toner, Mark R. Trent, Tim M. Wampler, John R. Williams
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Patent number: 7946123Abstract: A system is provided to control and operate a compressor to have two or more discrete output capacities in response to an outdoor temperature measurement. During operation of the compressor in an air conditioning or cooling mode, the compressor has a first output capacity in response to the outdoor temperature being greater than a first temperature setpoint and the compressor has a second output capacity in response to the outdoor temperature being less than a second temperature setpoint.Type: GrantFiled: December 7, 2009Date of Patent: May 24, 2011Assignee: Bristol Compressors International, Inc.Inventors: John W. Tolbert, Jr., Scott G. Hix, David T. Monk, Jerry D. Edwards
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Publication number: 20100083680Abstract: A system is provided to control and operate a compressor to have two or more discrete output capacities in response to an outdoor temperature measurement. During operation of the compressor in an air conditioning or cooling mode, the compressor has a first output capacity in response to the outdoor temperature being greater than a first temperature setpoint and the compressor has a second output capacity in response to the outdoor temperature being less than a second temperature setpoint.Type: ApplicationFiled: December 7, 2009Publication date: April 8, 2010Inventors: John W. TOLBERT, JR., Scott G. HIX, David T. MONK, Jerry D. EDWARDS
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Publication number: 20090324426Abstract: A system and method is provided for controlling the speed of the compressor to ensure adequate lubrication oil is provided to the components of the compressor. During operation of a capacity control program for the compressor, a preselected operating parameter of the compressor or motor drive is measured. The measured preselected operating parameter is compared to a preselected range for the operating parameter. If the measured preselected operating parameter is not within the preselected range, the output frequency of the capacity control program can be increased to provide proper lubrication for the components of the compressor.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Inventors: Bruce A. MOODY, Eugene K. CHUMLEY, Jerry D. EDWARDS, Tim M. WAMPLER, John W. TOLBERT, JR.
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Publication number: 20090324428Abstract: A system and method for determining a fault condition in a compressor is provided. The current of a motor drive powering the compressor and the outdoor ambient temperature are measured and used to determine if a fault condition or a potential fault condition is present in the compressor. If a fault condition is determined to be present, the compressor can be shutdown to avoid damage to the compressor. If a potential fault condition is determined, remedial action can be taken to attempt to prevent the fault condition from occurring and shutting down the compressor.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Inventors: John W. TOLBERT, JR., Bruce A. MOODY, Jerry D. EDWARDS, David R. GILLIAM, Eugene K. CHUMLEY, Richard C. DENZAU, Scott HIX, Justin M. TONER, Mark R. TRENT, Tim M. WAMPLER, John R. WILLIAMS
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Publication number: 20090324427Abstract: A system and method for starting a compressor is provided. An amount of liquid refrigerant that is located in an oil sump of the compressor is determined. Using the determined amount of liquid refrigerant, a starting algorithm for the compressor is selected. The selected starting algorithm is configured to remove the determined amount of liquid refrigerant from the oil sump before the compressor reaches a preselected operating speed. The selected starting algorithm is then executed to start the compressor.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Inventors: John W. TOLBERT, JR., Bruce A. MOODY, Eugene K. CHUMLEY, Richard C. DENZAU, Jerry D. EDWARDS, David R. GILLIAM, Scott HIX, Justin M. TONER, Mark R. TRENT, Tim M. WAMPLER, John R. WILLIAMS
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Patent number: 7628028Abstract: A system and method is provided to control and operate a compressor to have two or more discrete output capacities in response to an outdoor temperature measurement. During operation of the compressor in an air conditioning or cooling mode, the compressor has a first output capacity in response to the outdoor temperature being greater than a first temperature setpoint and the compressor has a second output capacity in response to the outdoor temperature being less than a second temperature setpoint.Type: GrantFiled: August 3, 2005Date of Patent: December 8, 2009Assignee: Bristol Compressors International, Inc.Inventors: John Willard Tolbert, Jr., Scott Garrison Hix, David Turner Monk, Jerry D. Edwards
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Patent number: 6901675Abstract: A system and method of sizing an inner diameter of the center bore of a laminated rotor is provided. The inner diameter of the center bore is determined by taking a series of measurements in the center bore with an electronic gauge and then analyzing the measurements to determine the acceptability of the rotor. The electronic gauge is inserted into the center bore of the rotor and measurements of the inner diameter of the center bore are taken at a variety of different depths and positions using the electronic gauge. The measurements are then analyzed to determine if the rotor is acceptable for use by evaluating the measurements with respect to a reference diameter and a depth in the center bore.Type: GrantFiled: May 27, 2003Date of Patent: June 7, 2005Assignee: Bristol Compressors, Inc.Inventors: Jerry D. Edwards, David T. Monk, John W. Tolbert
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Patent number: 6900573Abstract: A method of assembling and manufacturing a laminated rotor is provided which uses laminations having a thin bridge thickness. Different techniques are provided for preventing the molten material used in the casting or injection molding operation from leaking or seeping between the laminations during casting. In one technique, the laminations are stacked and oriented in the conventional way, and then both axial and radial pressures are applied to the stacked laminations to hold the laminations in position for the casting process. In another technique, the laminations are formed or extruded with a lip or collar portion that fit in a countersunk portion of an adjacent lamination and forms a wall or barrier between the laminations to prevent the leakage of the molten material during the casting or injection molding operation.Type: GrantFiled: September 30, 2004Date of Patent: May 31, 2005Assignee: Bristol Compressors, Inc.Inventors: Jerry D. Edwards, David T. Monk, John W. Tolbert
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Patent number: 6848495Abstract: A method of assembling and manufacturing a laminated rotor is provided which uses laminations having a thin bridge thickness. Different techniques are provided for preventing the molten material used in the casting or injection molding operation from leaking or seeping between the laminations during casting. In one technique, the laminations are stacked and oriented in the conventional way, and then both axial and radial pressures are applied to the stacked laminations to hold the laminations in position for the casting process. In another technique, the laminations are formed or extruded with a lip or collar portion that fit in a countersunk portion of an adjacent lamination and forms a wall or barrier between the laminations to prevent the leakage of the molten material during the casting or injection molding operation.Type: GrantFiled: May 19, 2003Date of Patent: February 1, 2005Assignee: Bristol Compressors, Inc.Inventors: Jerry D. Edwards, David T. Monk, John W. Tolbert
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Publication number: 20040237322Abstract: A system and method of sizing an inner diameter of the center bore of a laminated rotor is provided. The inner diameter of the center bore is determined by taking a series of measurements in the center bore with an electronic gauge and then analyzing the measurements to determine the acceptability of the rotor. The electronic gauge is inserted into the center bore of the rotor and measurements of the inner diameter of the center bore are taken at a variety of different depths and positions using the electronic gauge. The measurements are then analyzed to determine if the rotor is acceptable for use by evaluating the measurements with respect to a reference diameter and a depth in the center bore.Type: ApplicationFiled: May 27, 2003Publication date: December 2, 2004Applicant: Bristol CompressorsInventors: Jerry D. Edwards, David T. Monk, John W. Tolbert
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Publication number: 20040231818Abstract: A method of assembling and manufacturing a laminated rotor is provided which uses laminations having a thin bridge thickness. Different techniques are provided for preventing the molten material used in the casting or injection molding operation from leaking or seeping between the laminations during casting. In one technique, the laminations are stacked and oriented in the conventional way, and then both axial and radial pressures are applied to the stacked laminations to hold the laminations in position for the casting process. In another technique, the laminations are formed or extruded with a lip or collar portion that fit in a countersunk portion of an adjacent lamination and forms a wall or barrier between the laminations to prevent the leakage of the molten material during the casting or injection molding operation.Type: ApplicationFiled: May 19, 2003Publication date: November 25, 2004Applicant: Bristol CompressorsInventors: Jerry D. Edwards, David T. Monk, John W. Tolbert