Patents by Inventor Robert T. Nachtrieb
Robert T. Nachtrieb 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: 20230407702Abstract: A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.Type: ApplicationFiled: June 22, 2023Publication date: December 21, 2023Applicant: Lutron Technology Company LLCInventors: Evan T. Graham, David A. Kirby, Robert T. Nachtrieb
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Patent number: 11686152Abstract: A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.Type: GrantFiled: December 22, 2021Date of Patent: June 27, 2023Assignee: Lutron Technology Company LLCInventors: Evan T. Graham, David A. Kirby, Robert T. Nachtrieb
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Publication number: 20220235609Abstract: A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serveto limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.Type: ApplicationFiled: December 22, 2021Publication date: July 28, 2022Applicant: Lutron Technology Company LLCInventors: Evan T. Graham, David A. Kirby, Robert T. Nachtrieb
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Patent number: 11236547Abstract: A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.Type: GrantFiled: July 24, 2019Date of Patent: February 1, 2022Assignee: Lutron Technology Company LLCInventors: Evan T. Graham, David A. Kirby, Robert T. Nachtrieb
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Publication number: 20210180399Abstract: A blind system may control (e.g., automatically control) an amount of daylight entering a window on a façade of a building to prevent direct sunlight from shining into the building, while maximizing the amount of indirect sunlight in the building. The blind system may tilt one or more slats into a view tilt position in which the slats are horizontal, a slanted tilt position in which the slats may block direct sunlight from shining into the building, and a privacy tilt position in which the slats are vertical. The drive unit may tilt the slats according to a timeclock having the event times determined from a predicted position of the sun, such that the slats are tilted to the slanted tilt position when the predicted position of the sun indicates that direct sunlight is incident on the façade. A facing direction of the façade may be configured using a mobile device.Type: ApplicationFiled: December 11, 2020Publication date: June 17, 2021Applicant: Lutron Technology Company LLCInventors: Bryan Robert Barnes, Craig Alan Casey, Brian A. Jay, Kyle T. Barco, Robert T. Nachtrieb, Jennifer Wong, Roopshree das Gupta
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Publication number: 20200032582Abstract: A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.Type: ApplicationFiled: July 24, 2019Publication date: January 30, 2020Applicant: Lutron Technology Company LLCInventors: Evan T. Graham, David A. Kirby, Robert T. Nachtrieb
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Patent number: 9226377Abstract: A circuit for controlling a lighting load may operate to minimize flicker in the lighting load and electromagnetic interference (EMI) noise generated on an AC voltage supply for the lighting load. The circuit comprises a bus-voltage-generating circuit for generating a bus voltage, a load regulation circuit having an inverter circuit, and a high speed control circuit characterized by a cutoff frequency much greater than a frequency of a voltage ripple on the bus voltage. The control circuit may comprise an error amplifier circuit configured to spread the frequency of operation of the inverter circuit at a set intensity level of the lighting load into a spread spectrum of frequencies to reduce the time average of peaks of the spectrum of frequencies and peak EMI levels. The circuit may also comprise a non-linear amplifier circuit amplifying a lamp-current-feedback signal representative of the magnitude of the load current through the lighting load.Type: GrantFiled: July 14, 2014Date of Patent: December 29, 2015Assignee: LUTRON ELECTRONICS CO., INC.Inventors: Robert C. Newman, Jr., Robert T. Nachtrieb
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Publication number: 20140320033Abstract: A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit generates a lamp current through the lamp tube having a substantially constant envelope such that flicker in the lamp tube and electromagnetic interference (EMI) noise on an AC voltage supply are minimized. The dimmable ballast circuit comprises a high speed control circuit characterized by a cutoff frequency much greater than a frequency of a voltage ripple on a bus voltage of the ballast circuit. The dimmable ballast circuit may also comprise a non-linear amplifier circuit amplifying a lamp-current-feedback signal representative of the magnitude of the lamp current through the lamp.Type: ApplicationFiled: July 14, 2014Publication date: October 30, 2014Inventors: Robert C. Newman, JR., Robert T. Nachtrieb
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Patent number: 8803436Abstract: A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit generates a lamp current through the lamp tube having a substantially constant envelope such that flicker in the lamp tube and electromagnetic interference (EMI) noise on an AC voltage supply are minimized. The dimmable ballast circuit comprises a high speed control circuit characterized by a cutoff frequency much greater than a frequency of a voltage ripple on a bus voltage of the ballast circuit. The dimmable ballast circuit may also comprise a non-linear amplifier circuit amplifying a lamp-current-feedback signal representative of the magnitude of the lamp current through the lamp.Type: GrantFiled: May 4, 2012Date of Patent: August 12, 2014Assignee: Lutron Electronics Co., Inc.Inventors: Robert C. Newman, Jr., Robert T. Nachtrieb
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Publication number: 20120286689Abstract: A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit generates a lamp current through the lamp tube having a substantially constant envelope such that flicker in the lamp tube and electromagnetic interference (EMI) noise on an AC voltage supply are minimized. The dimmable ballast circuit comprises a high speed control circuit characterized by a cutoff frequency much greater than a frequency of a voltage ripple on a bus voltage of the ballast circuit. The dimmable ballast circuit may also comprise a non-linear amplifier circuit amplifying a lamp-current-feedback signal representative of the magnitude of the lamp current through the lamp.Type: ApplicationFiled: May 4, 2012Publication date: November 15, 2012Inventors: Robert C. Newman, JR., Robert T. Nachtrieb