Patents by Inventor Ernest C. Weyhrauch
Ernest C. Weyhrauch 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: 20130293103Abstract: A 3-way halogen lamp selectively generates a first light level, second light level, and third light level based on whether a first terminal on the lamp base and a second terminal on the lamp base are connected to a power supply. A controller housed entirely within the based detects whether the first and second terminals are connected to the power supply, and generates a control signal as a function thereof. A switching circuit housed entirely within the base is operated by the control signal to provide a voltage load signal having a particular RMS voltage. A single filament halogen capsule is attached to the base and connected to the switching circuit for receiving the voltage load signal and generating the first light level, second light level, and third light level when the voltage signal has a first RMS voltage, a second RMS voltage, and a third RMS voltage, respectively.Type: ApplicationFiled: May 4, 2012Publication date: November 7, 2013Applicant: OSRAM SYLVANIA Inc.Inventors: Ernest C. Weyhrauch, James E. Oetken, George B. Kendrick
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Publication number: 20130293130Abstract: A 3-way halogen lamp selectively generates different first, second, and third light levels. A first terminal on the lamp base receives a first input voltage waveform when the first terminal is connected to a power source. A second terminal on the lamp base receives a second input voltage waveform when the second terminal is connected to the power source. A rectifier circuit is connected to the first terminal for receiving the first input voltage waveform and rectifying the first input voltage waveform to generate a first load voltage waveform. A switching circuit is connected to the second terminal for receiving the second input voltage waveform and phase clipping the second input voltage waveform to generate a second load voltage waveform. A single filament is connected to the rectifier circuit and the switching circuit, and is housed in a halogen capsule attached to the lamp base.Type: ApplicationFiled: May 4, 2012Publication date: November 7, 2013Applicant: OSRAM SYLVANIA INC.Inventors: Ernest C. Weyhrauch, James E. Oetken, George B. Kendrick
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Patent number: 7527396Abstract: An incandescent lamp may be formed from a shell having an exterior side and an interior side defining a cavity, and with an internal wall defining a through passage extending from the exterior side to the interior side. A light source is located in the cavity facing the interior side, and coupled to electric lamp leads extending through the passage. A heat radiator assembly is adjacent the exterior side, and includes heat-dissipating surfaces exposed to air. An integral power supply is enclosed in the heat radiator assembly and electrically connected to the light source through the electric lamp leads. A threaded base having exterior electrical contact points is electrically connected through base leads to the integral power supply. The shell, radiator assembly and base are mechanically coupled as a unit. A lens may cover the shell to enclose the cavity and light source.Type: GrantFiled: June 21, 2005Date of Patent: May 5, 2009Assignee: Osram Sylvania Inc.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, John M. Cooper
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Patent number: 7492079Abstract: A lamp (10) includes an envelope (12) having a body (14) with a light source capsule (16) contained therein and ending in a hollow base (18) that terminates in a conical end (20). A circuit board (22) is positioned within the hollow base (18) and includes a triangular portion (24) that is closely fitted within the conical end (20). A temperature sensitive, voltage reducing component (28a) is positioned near the apex (30) of the triangular portion (24).Type: GrantFiled: June 14, 2005Date of Patent: February 17, 2009Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch, George B. Kendrick
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Patent number: 7462996Abstract: A method for converting a line voltage to an RMS load voltage in a lamp includes providing a control circuit which includes a switch and a microcontroller that operates the switch to establish an RMS load voltage for the lamp. The load voltage of the lamp is sensed and the sensed load voltage is compared in the microcontroller to a reference RMS voltage. Operation of the switch is adjusted in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over a first operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at non-zero line voltages less than the first operating range.Type: GrantFiled: October 2, 2006Date of Patent: December 9, 2008Assignee: Osram Sylvania Inc.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, Brent J. Eastwood
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Patent number: 7459861Abstract: A lamp contains a lamp voltage conversion circuit which includes a forward/reverse hybrid phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control clipping circuit has a time-based pulse source that triggers conduction of the phase-control clipping circuit independently of line voltage magnitude during time periods spanning polarity changes of the load voltage that are separated by intervals when conduction is not triggered.Type: GrantFiled: April 1, 2005Date of Patent: December 2, 2008Assignee: OSRAM Sylvania Inc.Inventors: George B. Kendrick, Ernest C. Weyhrauch, Matthew B. Ballenger
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Publication number: 20080122378Abstract: A lamp includes a lamp voltage conversion circuit within a base and connected to a lamp terminal. The lamp voltage conversion circuit includes a phase-clipping circuit connected to the lamp terminal and establishing a phase conduction angle that determines an RMS load voltage for the lamp. The phase-clipping circuit includes a transistor switch and a microcontroller that operates the transistor switch, wherein ON/OFF periods of the transistor switch define the phase conduction angle. The microcontroller is arranged and adapted to sense a load voltage at the lamp terminal and to compare the sensed load voltage to a reference RMS voltage and to adjust the ON/OFF periods of the transistor switch in response to the comparison to cause the load voltage to approach the reference RMS voltage.Type: ApplicationFiled: September 25, 2006Publication date: May 29, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Matthew B. Ballenger, George B. Kendrick, Ernest C. Weyhrauch
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Publication number: 20080122377Abstract: A method of converting a line voltage to an RMS load voltage in a lamp includes connecting a phase-clipping circuit which includes a transistor switch and a microcontroller that operates the transistor switch to a lamp terminal. A phase conduction angle is established in the phase-clipping circuit for determining an RMS load voltage by operating the transistor switch, wherein ON/OFF periods of the transistor switch define the phase conduction angle. The method further includes sensing the load voltage, comparing in the microcontroller the sensed load voltage to a reference RMS voltage, and adjusting the ON/OFF periods of the transistor switch in response to the comparison to cause the load voltage to approach the reference RMS voltage.Type: ApplicationFiled: September 25, 2006Publication date: May 29, 2008Applicant: OSRAM SYLVANIA INC.Inventors: George B. Kendrick, Ernest C. Weyhrauch, Matthew B. Ballenger
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Patent number: 7375475Abstract: A lamp contains a voltage conversion circuit that converts a line voltage to an RMS load voltage and includes a switch and a microcontroller that operates the switch to define the RMS load voltage. The microcontroller senses a load voltage of the lamp, compares the sensed load voltage to a reference RMS voltage, and operates the switch in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over an operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at line voltages less than the operating range. The operating range of the line voltage is defined to have a minimum that is a non-zero line voltage at which a load current is a predetermined maximum. The voltage conversion circuit may be a phase clipping circuit or a pulse width modulation circuit.Type: GrantFiled: October 2, 2006Date of Patent: May 20, 2008Assignee: Osram Sylvania Inc.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, Brent J. Eastwood
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Publication number: 20080106213Abstract: A method for converting a line voltage to an RMS load voltage in a lamp includes providing a a control circuit which includes a switch and a microcontroller that operates the switch to establish an RMS load voltage for the lamp. The load voltage of the lamp is sensed and the sensed load voltage is compared in the microcontroller to a reference RMS voltage. Operation of the switch is adjusted in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over a first operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at non-zero line voltages less than the first operating range.Type: ApplicationFiled: October 2, 2006Publication date: May 8, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, Brent J. Eastwood
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Publication number: 20080088246Abstract: A lamp contains a voltage conversion circuit that converts a line voltage to an RMS load voltage and includes a switch and a microcontroller that operates the switch to define the RMS load voltage. The microcontroller senses a load voltage of the lamp, compares the sensed load voltage to a reference RMS voltage, and operates the switch in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over an operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at line voltages less than the operating range. The operating range of the line voltage is defined to have a minimum that is a non-zero line voltage at which a load current is a predetermined maximum. The voltage conversion circuit may be a phase clipping circuit or a pulse width modulation circuit.Type: ApplicationFiled: October 2, 2006Publication date: April 17, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, Brent J. Eastwood
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Patent number: 7358689Abstract: A phase-control power controller converts a line voltage to an RMS load voltage and includes a phase-control clipping circuit that clips a load voltage to provide the RMS load voltage. The power controller may be in a base of a lamp and connected to a lamp terminal. The phase-clipping circuit establishes a phase conduction angle that determines the RMS load voltage for the lamp and includes a transistor switch and a microcontroller that operates the transistor switch, where ON/OFF periods of the transistor switch define the phase conduction angle. The microcontroller senses a load voltage at the lamp terminal, compares the sensed load voltage to a reference RMS voltage, and adjusts the ON/OFF periods of the transistor switch in response to the comparison to cause the load voltage to approach the reference RMS voltage. The circuit may be used for reverse, forward, or forward/reverse hybrid phase clipping.Type: GrantFiled: September 25, 2006Date of Patent: April 15, 2008Assignee: Osram Sylvania Inc.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick
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Patent number: 7352134Abstract: A lamp contains a lamp voltage conversion circuit within the lamp and connected to a lamp terminal. The voltage conversion circuit includes a phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control clipping circuit has a time-based pulse source that triggers conduction of the phase-control clipping circuit independently of line voltage magnitude.Type: GrantFiled: February 4, 2005Date of Patent: April 1, 2008Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch
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Publication number: 20080074053Abstract: A phase-control power controller converts a line voltage to an RMS load voltage and includes a phase-control clipping circuit that clips a load voltage to provide the RMS load voltage. The power controller may be in a base of a lamp and connected to a lamp terminal. The phase-clipping circuit establishes a phase conduction angle that determines the RMS load voltage for the lamp and includes a transistor switch and a microcontroller that operates the transistor switch, where ON/OFF periods of the transistor switch define the phase conduction angle. The microcontroller senses a load voltage at the lamp terminal, compares the sensed load voltage to a reference RMS voltage, and adjusts the ON/OFF periods of the transistor switch in response to the comparison to cause the load voltage to approach the reference RMS voltage. The circuit may be used for reverse, forward, or forward/reverse hybrid phase clipping.Type: ApplicationFiled: September 25, 2006Publication date: March 27, 2008Applicant: OSRAM SYLVANIA INC.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick
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Patent number: 7342359Abstract: A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed phase forward/reverse hybrid phase-control clipping circuit that performs phase-control clipping of a load voltage to provide an RMS load voltage. A conduction angle of the phase-control clipping circuit is defined by a time-based pulse source that triggers conduction in the phase-control clipping circuit independently of line voltage magnitude during time periods that span polarity changes of the load voltage and that are separated by intervals when conduction is not triggered. The phase-control clipping circuit includes a transistor switch whose gate receives positive polarity signals from the time-based pulse source to trigger conduction of the phase-control clipping circuit. The power controller may be in a voltage conversion circuit that converts a line voltage at a lamp terminal to the RMS load voltage usable by a light emitting element of the lamp.Type: GrantFiled: April 1, 2005Date of Patent: March 11, 2008Inventors: George B. Kendrick, Ernest C. Weyhrauch, Matthew B. Ballenger
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Patent number: 7301291Abstract: A power controller converts a line voltage to an RMS load voltage for a lamp, and includes a switch and a microcontroller that operates the switch to define the RMS load voltage. The microcontroller senses a load voltage of the lamp, compares the sensed load voltage to a reference RMS voltage, and operates the switch in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over an operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at line voltages less than the operating range. The operating range of the line voltage is defined to have a minimum that is a non-zero line voltage at which a load current is a predetermined maximum. The voltage conversion circuit may be a phase clipping circuit or a pulse width modulation circuit.Type: GrantFiled: October 2, 2006Date of Patent: November 27, 2007Assignee: Osram Sylvania Inc.Inventors: Ernest C. Weyhrauch, Matthew B. Ballenger, George B. Kendrick, Brent J. Eastwood
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Patent number: 7291984Abstract: A method of converting a line voltage to an RMS load voltage in a lamp includes modulating a load voltage with a pulse width modulation circuit that is entirely within the lamp and provides an RMS load voltage to a light emitting element of the lamp. Conduction is triggered in the pulse width modulation circuit independently of a line voltage magnitude with a time-based signal source that defines a duty cycle of the pulse width modulation circuit suitable for the RMS load voltage.Type: GrantFiled: February 4, 2005Date of Patent: November 6, 2007Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch
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Patent number: 7274148Abstract: A lamp contains a lamp voltage conversion circuit that is entirely within a base for converting a line voltage at a lamp terminal to an RMS load voltage at a light emitting element. The voltage conversion circuit includes a forward clipping circuit with a three-terminal thyristor that forward clips a load voltage to define the RMS load voltage, and a time-based pulse source that provides pulses the trigger conduction of the three-terminal thyristor at constant time intervals that are independent of the magnitude of the line voltage.Type: GrantFiled: February 4, 2005Date of Patent: September 25, 2007Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch
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Patent number: 7274149Abstract: A lamp has a voltage controller that converts a line voltage to an RMS load voltage suitable for operation of the lamp's light emitting element, where the voltage controller is entirely within a lamp base and uses pulse width modulation to define the RMS load voltage. The voltage controller is connected in series between the light emitting element and a line voltage terminal in the lamp base and has a bridge that supplies the RMS load voltage to the light emitting element, a switching transistor that pulse width modulates a current supplied to the bridge, and a timer that is connected to a gate of the switching transistor to turn the switching transistor on and off at a rate that defines the RMS load voltage. The voltage controller allows the lamp to be used with an external dimming circuit that provides a clipped line voltage to the lamp.Type: GrantFiled: February 4, 2005Date of Patent: September 25, 2007Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch
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Patent number: 7224151Abstract: A fixed phase power controller that converts a line voltage to an RMS load voltage includes an analog control block with a capacitor that receives an input that is independent of a change in magnitude of the line voltage and that charges and discharges to provide a trigger signal at a first frequency, a reset circuit that periodically resets an initial condition of the analog control block, a synchronization connection that provides a sync signal that synchronizes the trigger signal with a waveform of the line voltage, and a control circuit that clips a load voltage based on the synchronized trigger signal to define the RMS load voltage. The controller finds application in a lamp where it reduces the line voltage to an RMS load voltage suitable for a light emitting element.Type: GrantFiled: February 4, 2005Date of Patent: May 29, 2007Assignee: Osram Sylvania Inc.Inventors: Matthew B. Ballenger, Ernest C. Weyhrauch