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Title:
MOTORIZED WINDOW TREATMENT
Document Type and Number:
WIPO Patent Application WO/2012/125414
Kind Code:
A3
Abstract:
A motorized window treatment (110) provides a low-cost solution for controlling the amount of daylight entering a space through a window (104). The window treatment (110) includes a covering material (112), a drive shaft, at least one lift cord rotatably received around the drive shaft and connected to the covering material (112), and a motor (150) coupled to the drive shaft for raising and lowering the covering material (112). The window treatment (110) also includes a spring assist unit (135) for assisting the motor (150) by providing a torque that equals the torque provided by the weight on the cords that lift the covering material (112) at a position midway between fully-open and fully-closed positions, which helps to minimize motor usage and conserve battery life if a battery (138) is used to power the motorized window treatment (110). The window treatment (110) may comprise a photosensor (164) for measuring the amount of daylight outside the window (104) and temperature sensors (160,162) for measuring the temperatures inside and outside of the window (104). The position of the covering material (112) may be automatically controlled in response to the photosensor (164) and the temperature sensors (160,162) to save energy, or may also be controlled in response to an infrared or radio-frequency remote control (118).

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Inventors:
ADAMS JASON O (US)
BLAIR EDWARD J (US)
COONEY ANDREW K (US)
JAIN SOUMYA (US)
KIRBY DAVID A (US)
LUNDY STEPHEN (US)
MIERTA JUSTIN J (US)
MISTARZ DANIEL W (US)
NEWMAN ROBERT C JR (US)
OGDEN PETER W JR (US)
ROE JONATHAN L (US)
WU CHEN M (US)
ZERNHELT JUSTIN M (US)
Application Number:
PCT/US2012/028315
Publication Date:
January 03, 2013
Filing Date:
March 08, 2012
Export Citation:
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Assignee:
LUTRON ELECTRONICS CO (US)
ADAMS JASON O (US)
BLAIR EDWARD J (US)
COONEY ANDREW K (US)
JAIN SOUMYA (US)
KIRBY DAVID A (US)
LUNDY STEPHEN (US)
MIERTA JUSTIN J (US)
MISTARZ DANIEL W (US)
NEWMAN ROBERT C JR (US)
OGDEN PETER W JR (US)
ROE JONATHAN L (US)
WU CHEN M (US)
ZERNHELT JUSTIN M (US)
International Classes:
E06B9/32; E06B9/322; H04L25/49; H04W52/02
Domestic Patent References:
WO2005093682A12005-10-06
WO2007055574A12007-05-18
Foreign References:
US5990646A1999-11-23
US20090199975A12009-08-13
US20080260363A12008-10-23
US5134347A1992-07-28
US20050087394A12005-04-28
US5848634A1998-12-15
DE202009008418U12009-09-24
EP2209249A22010-07-21
Attorney, Agent or Firm:
DUJMICH, Louis C. et al. (1180 Avenue of the AmericasNew York, New York, US)
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