Patents by Inventor Thomas Hopper
Thomas Hopper 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).
-
Patent number: 10031185Abstract: Determining a state of charge (SOC) of a rechargeable battery includes using a first process to determine a first value for the SOC of the battery and using a second process to determine a second value for the SOC of the battery and deriving the SOC as a weighted average of the first value for the SOC and the second value for the SOC. During a charging cycle of the battery an input charge of the battery is determined from an input current flowing into the battery and a charging time. During a discharging cycle an output charge of the battery is determined from an output current flowing out of the battery, a discharging time and an actual capacity of the battery is the sum of the input charge over charging cycles minus the sum of the output charge over discharging cycles.Type: GrantFiled: February 4, 2014Date of Patent: July 24, 2018Assignee: EXIDE TECHNOLOGIESInventors: Rainer Bussar, Gerd Wessels Hoogestraat, Wolfgang Rudolf Fischer, Thomas Hopper, Nicolas Henri Bernard Redon, Olaf Sielemann, Sebastian Zeh
-
Publication number: 20150377972Abstract: Determining a state of charge (SOC) of a rechargeable battery includes using a first process to determine a first value for the SOC of the battery and using a second process to determine a second value for the SOC of the battery and deriving the SOC as a weighted average of the first value for the SOC and the second value for the SOC. During a charging cycle of the battery an input charge of the battery is determined from an input current flowing into the battery and a charging time. During a discharging cycle an output charge of the battery is determined from an output current flowing out of the battery, a discharging time and an actual capacity of the battery is the sum of the input charge over charging cycles minus the sum of the output charge over discharging cycles.Type: ApplicationFiled: February 4, 2014Publication date: December 31, 2015Inventors: Rainer Bussar, Gerd Wessels Hoogestraat, Wolfgang Rudolf Fischer, Thomas Hopper, Nicolas Henri Bernard Redon, Olaf Sielemann, Sebastian Zeh
-
Patent number: 7357208Abstract: A control unit of an at least temporarily four wheel-driven motor vehicle is provided. The control unit is arranged such that a displacement path for an actuator that actuates a transmission clutch is assigned to a setpoint clutch torque via a characteristic curve, and when at least one defined operating condition is present, ensures stable operation of the wheels. The control unit specifies a displacement path which according to the characteristic curve results in a not completely locked state of the transmission clutch, and subsequently computes the actual clutch torque from only the drive slip on the front axle, the drive slip on the rear axle, and the total drive torque.Type: GrantFiled: April 5, 2006Date of Patent: April 15, 2008Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Christian Billig, Thomas Hopper
-
Patent number: 7334655Abstract: A control unit of a control system for an at least temporarily four wheel-driven motor vehicle is arranged such that a displacement path for an actuator that actuates a transmission clutch is assigned to a setpoint clutch torque via a characteristic curve, and the control unit checks whether slip of the transmission clutch occurs when a displacement path is specified that should result in an at least fully locked state of the transmission clutch according to the characteristic curve.Type: GrantFiled: April 5, 2006Date of Patent: February 26, 2008Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Christian Billig, Thomas Hopper
-
Patent number: 7143855Abstract: A method of controlling a shiftable clutch in a drive train between a front axle and a rear axle of a motor vehicle with a four-wheel drive is provided. One axle is driven directly and the other axle, as a hang-on system, is coupled by way of the clutch. In order to create a method of controlling the shiftable clutch in a drive train between the front axle and the rear axle, and a corresponding system with an improved availability of the full four-wheel drive characteristic with a corresponding protection of the driving dynamics of the overall vehicle, the clutch is continuously acted upon by torque in an adjustable manner by way of a pilot control measure.Type: GrantFiled: June 20, 2005Date of Patent: December 5, 2006Assignee: Bayerische Motoren Werke AktiengesellschaftInventor: Thomas Hopper
-
Publication number: 20060191729Abstract: A control unit of a control system for an at least temporarily four wheel-driven motor vehicle is arranged such that a displacement path for an actuator that actuates a transmission clutch is assigned to a setpoint clutch torque via a characteristic curve, and the control unit checks whether slip of the transmission clutch occurs when a displacement path is specified that should result in an at least fully locked state of the transmission clutch according to the characteristic curve.Type: ApplicationFiled: April 5, 2006Publication date: August 31, 2006Applicant: Bayerische Motoren Werke AktiengesellschaftInventors: Christian Billig, Thomas Hopper
-
Publication number: 20060180374Abstract: A control unit of an at least temporarily four wheel-driven motor vehicle is provided. The control unit is arranged such that a displacement path for an actuator that actuates a transmission clutch is assigned to a setpoint clutch torque via a characteristic curve, and when at least one defined operating condition is present, ensures stable operation of the wheels. The control unit specifies a displacement path which according to the characteristic curve results in a not completely locked state of the transmission clutch, and subsequently computes the actual clutch torque from only the drive slip on the front axle, the drive slip on the rear axle, and the total drive torque.Type: ApplicationFiled: April 5, 2006Publication date: August 17, 2006Applicant: Bayerische Motoren Werke AktiengesellschaftInventors: Christian Billig, Thomas Hopper
-
Patent number: 7018740Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: GrantFiled: September 16, 2003Date of Patent: March 28, 2006Assignee: Texaco Ovonic Fuel Cell LLCInventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Kevin Fok, Thomas Hopper
-
Publication number: 20050230172Abstract: A method of controlling a shiftable clutch in a drive train between a front axle and a rear axle of a motor vehicle with a four-wheel drive is provided. One axle is driven directly and the other axle, as a hang-on system, is coupled by way of the clutch. In order to create a method of controlling the shiftable clutch in a drive train between the front axle and the rear axle, and a corresponding system with an improved availability of the full four-wheel drive characteristic with a corresponding protection of the driving dynamics of the overall vehicle, the clutch is continuously acted upon by torque in an adjustable manner by way of a pilot control measure.Type: ApplicationFiled: June 20, 2005Publication date: October 20, 2005Applicant: Bayerische Motoren Werke AktiengesellschaftInventor: Thomas Hopper
-
Patent number: 6926986Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes encapsulated electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and electrode plates to supply the electrodes with high concentrations of oxygen from air.Type: GrantFiled: May 9, 2002Date of Patent: August 9, 2005Assignee: Energy Conversion DevicesInventors: Stanford R. Ovshinsky, Ana Menjak, Thomas Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar
-
Publication number: 20050147884Abstract: An active electrode composition comprising a nickel hydroxide material and a pectin. Preferably, the pectin comprises a citrus pectin.Type: ApplicationFiled: November 15, 2004Publication date: July 7, 2005Inventors: Srinivasan Venkatesan, Boyko Aladjov, Kevin Fok, Thomas Hopper, Stanford Ovshinsky
-
Publication number: 20050042495Abstract: A fuel cell utilizing parallel flow of a hydrogen stream, an oxygen stream, and an electrolyte solution with respect to the electrodes, while maintaining mechanical support within the fuel cell. The fuel cell utilizes encapsulated electrodes to maintain a high air flow rate and low pressure throughout the fuel cell. The fuel cell is also designed to maintain mechanical support within the fuel cell while the electrodes expand and contract in response to the absorption of oxygen and hydrogen. Gas is predistributed by the compression plates and electrode plates to supply the electrodes with high concentrations of oxygen from air.Type: ApplicationFiled: May 9, 2002Publication date: February 24, 2005Inventors: Stanford Ovshinsky, Ana Menjak, Thomas Hopper, Zdravko Menjak, Kevin Fok, Boyko Aladjov, Srinivasan Venkatesan, Subhash Dhar
-
Patent number: 6818348Abstract: An active electrode composition comprising an active electrode material and a binder where the binder comprises a monosaccharide, a disaccharide, a pectin or a molasses. Preferably, the active electrode material is nickel hydroxide.Type: GrantFiled: February 10, 2000Date of Patent: November 16, 2004Assignee: Ovonic Battery Company, Inc.Inventors: Srinivasan Venkatesan, Boyko Aladjov, Kevin Fok, Thomas Hopper, Stanford R. Ovshinsky
-
Patent number: 6783891Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: GrantFiled: September 16, 2003Date of Patent: August 31, 2004Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Kevin Fok, Thomas Hopper
-
Patent number: 6777125Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: GrantFiled: June 28, 2002Date of Patent: August 17, 2004Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovhsinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash Dhar, Kevin Fok, Thomas Hopper
-
Publication number: 20040053109Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: ApplicationFiled: September 16, 2003Publication date: March 18, 2004Inventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Kevin Fok, Thomas Hopper
-
Publication number: 20040053110Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: ApplicationFiled: September 16, 2003Publication date: March 18, 2004Inventors: Stanford R. Ovhsinsky, Srinivasan Venkatesan, Boyko Aladjov, Subbash Dhar, Kevin Fork, Thomas Hopper
-
Patent number: 6703156Abstract: Fuel cell oxygen electrode and instant startup fuel cells employing such oxygen electrode. The oxygen electrode operates through the mechanism of redox couples which uniquely provide multiple degrees of freedom in selecting the operating voltages available for such fuel cells. Such oxygen electrodes provide the fuel cells in which they are used a “buffer” or “charge” of oxidizer available within the oxygen electrode at all times.Type: GrantFiled: October 4, 2002Date of Patent: March 9, 2004Assignee: Texaco Ovonic Fuel Cell, LLCInventors: Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Subhash K. Dhar, Kevin Fok, Thomas Hopper
-
Patent number: 6613471Abstract: A hydrogen storage alloy active material for the anode of Ovonic instant startup/regenerative fuel cells. The active material includes a hydrogen storage alloy material with a water reactive chemical hydride additive, which, upon utilization of the active material in an anode of an alkaline electrolyte fuel cell, gives the anode added benefits, not attainable by using hydrogen storage alloy material alone. These added benefits include 1) precharge of the hydrogen storage material with hydrogen; 2) higher porosity/increased surface area/reduced electrode polarization at high currents; 3) simplified, faster activation of the hydrogen storage alloy; and 4) optionally, enhanced corrosion protection for the hydrogen storage alloy.Type: GrantFiled: October 31, 2001Date of Patent: September 2, 2003Assignee: Energy Conversion Devices, Inc.Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Thomas Hopper, Kevin Fok, Subhash Dhar
-
Patent number: 6605375Abstract: A method of activating a hydrogen storage alloy electrode. The method comprises the step of applying current cycles to the electrode where each current cycle includes a forward pulse effective to at least partially charge the electrode and a reverse pulse effective to at least partially discharge the electrode.Type: GrantFiled: February 28, 2001Date of Patent: August 12, 2003Assignee: Ovonic Battery Company, Inc.Inventors: Stanford R. Ovshinsky, Boyko Aladjov, Srinivasan Venkatesan, Subhash K. Dhar, Thomas Hopper, Kevin Fok