Patents by Inventor Steven Treece Tom
Steven Treece Tom 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: 10247458Abstract: Method for improving efficiency of a chilled water system having a chiller unit, circulation pumps, a heat absorption unit and a heat rejection unit, including adjusting a temperature of at least one of a chilled water supply to the heat absorption unit and a condenser water supply from the heat rejection unit; measuring efficiency of the chiller unit and at least one of the circulation pumps, the heat absorption unit and the heat rejection unit; further adjusting temperature of at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if the measuring the efficiency indicates an improved efficiency; and further adjusting the temperature of the at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if measuring the efficiency indicates worsened efficiency.Type: GrantFiled: August 20, 2014Date of Patent: April 2, 2019Assignee: CARRIER CORPORATIONInventors: Christopher Shane McGowan, Steven Treece Tom
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Publication number: 20150052919Abstract: Method for improving efficiency of a chilled water system having a chiller unit, circulation pumps, a heat absorption unit and a heat rejection unit, including adjusting a temperature of at least one of a chilled water supply to the heat absorption unit and a condenser water supply from the heat rejection unit; measuring efficiency of the chiller unit and at least one of the circulation pumps, the heat absorption unit and the heat rejection unit; further adjusting temperature of at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if the measuring the efficiency indicates an improved efficiency; and further adjusting the temperature of the at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if measuring the efficiency indicates worsened efficiency.Type: ApplicationFiled: August 20, 2014Publication date: February 26, 2015Inventors: Christopher Shane McGowan, Steven Treece Tom
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Patent number: 7802438Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.Type: GrantFiled: November 17, 2006Date of Patent: September 28, 2010Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Patent number: 7669777Abstract: The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.Type: GrantFiled: June 12, 2007Date of Patent: March 2, 2010Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Publication number: 20080114500Abstract: The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.Type: ApplicationFiled: June 12, 2007Publication date: May 15, 2008Inventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Patent number: 7246753Abstract: The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.Type: GrantFiled: March 19, 2004Date of Patent: July 24, 2007Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Patent number: 7216497Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.Type: GrantFiled: March 19, 2004Date of Patent: May 15, 2007Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Publication number: 20040256473Abstract: The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.Type: ApplicationFiled: March 19, 2004Publication date: December 23, 2004Inventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Patent number: 6715690Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.Type: GrantFiled: April 28, 2003Date of Patent: April 6, 2004Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Publication number: 20030197066Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.Type: ApplicationFiled: April 28, 2003Publication date: October 23, 2003Inventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar
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Patent number: 6554198Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.Type: GrantFiled: May 7, 2001Date of Patent: April 29, 2003Assignee: Automated Logic CorporationInventors: Gerry Glancy Hull, Steven Treece Tom, Raynold Lee Saar