Patents by Inventor Kevin L. Glasgow
Kevin L. Glasgow 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: 7321219Abstract: A method and system for battery charging. In some aspects, an electrical combination including a battery charger operable to supply a charging current to a battery to charge the battery and a battery including a switch having an interrupt condition, in which the switch is operable to interrupt a discharge current from the battery. The battery is electrically connectable to the battery charger and the supply of the charging current from the battery charger to the battery is enabled when the switch is in the interrupt condition.Type: GrantFiled: December 30, 2005Date of Patent: January 22, 2008Assignee: Milwaukee Electric Tool CorporationInventors: Gary D. Meyer, Jay J. Rosenbecker, Kevin L. Glasgow, Todd W. Johnson, Karl F. Scheucher
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Patent number: 7282880Abstract: A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: GrantFiled: October 2, 2006Date of Patent: October 16, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, Robert M. Crisp
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Patent number: 7262580Abstract: A method and system for battery charging. In some aspects, a battery charger including at least one terminal to electrically connect to a lithium-based chemistry battery pack and a controller operable to provide a charging current to the battery pack through the at least one terminal. The controller is operable to select a threshold for a charging function according to a nominal voltage of the battery pack.Type: GrantFiled: December 30, 2005Date of Patent: August 28, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Gary D. Meyer, Jay J. Rosenbecker, Kevin L. Glasgow, Todd W. Johnson, Karl F. Scheucher
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Patent number: 7253585Abstract: A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell.Type: GrantFiled: November 24, 2003Date of Patent: August 7, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Karl F. Scheucher, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow
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Patent number: 7176654Abstract: A method and system for battery charging. In some aspects, an electrical combination comprises a first battery having a Lithium-based chemistry, the first battery having a first nominal voltage in a nominal voltage range, a second battery having a Lithium-based chemistry, the second battery having a second nominal voltage, the second nominal voltage being different than the first nominal voltage and being outside of the nominal voltage range, and a battery charger operable to charge the first battery and the second battery.Type: GrantFiled: November 20, 2003Date of Patent: February 13, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Gary D. Meyer, Jay J. Rosenbecker, Kevin L. Glasgow, Todd W. Johnson, Karl F. Scheucher
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Patent number: 7164257Abstract: A system and method for battery protection. In some aspects, a battery pack including a housing, a cell supported by the housing and power being transferable between the cell and an electrical device, a circuit supported by the housing and operable to control a function of the battery pack, and a heat sink in heat transfer relationship with the circuit and operable to dissipate heat from the circuit.Type: GrantFiled: December 30, 2005Date of Patent: January 16, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Karl F. Scheucher, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow
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Patent number: 7157882Abstract: A system and method for battery protection. In some aspects, a method of conducting an operation including a battery pack, includes the acts of monitoring a first battery pack condition at a first monitoring rate, determining when a second battery pack condition reaches a threshold, after the second battery pack condition reaches the threshold, monitoring the first battery pack condition at a second monitoring rate, the second monitoring rate being different than the first monitoring rate.Type: GrantFiled: November 20, 2003Date of Patent: January 2, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Karl F. Scheucher, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow
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Patent number: 7157883Abstract: A system and method for battery protection. In some aspects, a method of a method for operating a battery pack. The battery pack having a battery pack condition, and the battery pack condition having a range. The method including the acts of conducting an operation including the battery pack, measuring a first measurement of the battery pack condition, measuring a second measurement of the battery pack condition, averaging the first measurement and the second measurement to provide an average measurement and if the average measurement is within the range, continuing the operation including the battery pack. At least one of the first measurement and the second measurement being outside of the range.Type: GrantFiled: December 30, 2005Date of Patent: January 2, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Karl F. Scheucher, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow
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Patent number: 7116071Abstract: A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: GrantFiled: November 23, 2004Date of Patent: October 3, 2006Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, Robert M. Crisp
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Publication number: 20040263119Abstract: A method and system for battery charging. In some aspects, an electrical combination comprises a first battery having a Lithium-based chemistry, the first battery having a first nominal voltage in a nominal voltage range, a second battery having a Lithium-based chemistry, the second battery having a second nominal voltage, the second nominal voltage being different than the first nominal voltage and being outside of the nominal voltage range, and a battery charger operable to charge the first battery and the second battery.Type: ApplicationFiled: November 20, 2003Publication date: December 30, 2004Inventors: Gary D. Meyer, Jay J. Rosenbecker, Kevin L. Glasgow, Todd W. Johnson, Karl F. Scheucher
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Publication number: 20040257038Abstract: A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell.Type: ApplicationFiled: November 24, 2003Publication date: December 23, 2004Inventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Karl F. Scheucher, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow
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Patent number: 6823134Abstract: A method and apparatus to automatically reverse the motor of a dispensing gun or similar tool. The invention includes a controller that automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: GrantFiled: May 21, 2002Date of Patent: November 23, 2004Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, Robert M. Crisp
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Publication number: 20030090234Abstract: A battery charger. The battery charger includes a housing having an outer surface, a battery being supportable on the outer surface, a charging circuit supported by the housing and electrically connectable to a power source and the battery, and a protective structure connected to and extending from the outer surface of the housing, the protective structure extending from the outer surface beyond the battery.Type: ApplicationFiled: November 7, 2002Publication date: May 15, 2003Inventors: Kevin L. Glasgow, David J. Rozwadowski, Jeffrey M. Zeiler, George L. Santana
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Publication number: 20020136541Abstract: A method and apparatus to automatically reverse the motor of a dispensing gun or similar tool. The invention includes a controller that automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: ApplicationFiled: May 21, 2002Publication date: September 26, 2002Applicant: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, Robert M. Crisp
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Publication number: 20020067147Abstract: A method and apparatus to automatically reverse the motor of a dispensing gun or similar tool. The invention includes a controller that automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: ApplicationFiled: December 6, 2000Publication date: June 6, 2002Inventors: Kevin L. Glasgow, Robert M. Crisp
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Patent number: 6392373Abstract: A method and apparatus to automatically reverse the motor of a dispensing gun or similar tool. The invention includes a controller that automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor.Type: GrantFiled: December 6, 2000Date of Patent: May 21, 2002Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, Robert M. Crisp
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Patent number: 6211652Abstract: A deep discharge protection circuit designed to be directly integrated into battery-operated devices having a battery, a power switch that controls the battery, and a load connected to the power switch. The protection circuit includes a thyristor or similar current-controlled, latched switch that has a control gate or input. The thyristor is coupled in series with the load. A capacitor or similar electric energy storage device is coupled to the load and to the control input of the thyristor. A resistor is coupled to the load and to the control input of the thyristor, in parallel to the capacitor. When the power switch is turned on, it delivers a current pulse to the capacitor. The capacitor briefly shorts and delivers a trigger current to the control input of the thyristor. The trigger current causes the thyristor to become conductive, which allows current to travel from the battery through the load to ground.Type: GrantFiled: February 4, 2000Date of Patent: April 3, 2001Assignee: Milwaukee Electric Tool CorporationInventor: Kevin L. Glasgow
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Patent number: 5250891Abstract: A battery charger for charging a battery from a DC source includes a step-down convertor coupled to the battery and to a voltage source. When the voltage required to charge the battery is less than that of the DC source, the step-down convertor is connected directly to the source and if the source voltage is less than that required to charge the battery, a step-up convertor is connected between the source and the step-down convertor. Control circuits are provided for sensing the presence of a battery pack, for initiating the flow of charging current, for pulse-width modulating the flow of charging current to the battery and for terminating the flow of charging current when the battery is fully charged as sensed by a predetermined battery temperature or a predetermined drop in battery charging voltage from a peak value. A timer or a latching circuit prevents the resumption of charging current flow until the battery being charged has been removed or replaced.Type: GrantFiled: May 13, 1991Date of Patent: October 5, 1993Assignee: Milwaukee Electric Tool CorporationInventor: Kevin L. Glasgow
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Patent number: D529439Type: GrantFiled: February 24, 2004Date of Patent: October 3, 2006Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, David J. Rozwadowski, Jeffrey M. Zeiler, Tom G. Volk, Scott H. Micoley, Alan Bengtson
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Patent number: D487059Type: GrantFiled: May 7, 2002Date of Patent: February 24, 2004Assignee: Milwaukee Electric Tool CorporationInventors: Kevin L. Glasgow, David J. Rozwadowski, Jeffrey M. Zeiler, Tom G. Volk, Scott H. Micoley, Alan Bengtson