4005results about "Door/window protective devices" patented technology

A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload or low-line condition. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, and a controller. The controller controls the motor drive circuit to drive the motor with a pulse-width modulated signal generated from a bus voltage. The controller is operable to monitor the magnitude of the bus voltage. If the bus voltage drops below a first voltage threshold, the controller stops the motor or reduces the duty cycle of the pulse-width modulated signal to allow the bus voltage to increase to an acceptable magnitude. When the bus voltage rises above a second voltage threshold, the controller begins driving the motor normally once again. During an overload or low-line condition, the controller is prevented from resetting, while driving the motor with minimal interruption to the movement of the motorized window treatment.

A load control system provides for automatically controlling a position of a motorized window treatment to control the amount of sunlight entering a space of a building through a window located in a façade of the building in order to control a sunlight penetration distance within the space and minimize occupant distractions. The load control system automatically generates a timeclock schedule having a number of timeclock events for controlling the position of the motorized window treatment during the present day. A user is able to select a desired maximum sunlight penetration distance for the space and a minimum time period that may occur between any two consecutive timeclock events. In addition, a maximum number of movements that may occur during the timeclock schedule may also be entered. The load control system uses these inputs to determine event times and corresponding positions of the motorized window treatment for each timeclock event of the timeclock schedule.

A load control system for a building having a lighting load, a window, and a heating and cooling system comprises a lighting control device for controlling the amount of power delivered to the lighting load, a motorized window treatment comprising a window treatment fabric for covering the window, a temperature control device for controlling a setpoint temperature of the heating and cooling system to thus control a present temperature in the building, and a dynamic keypad comprising a visual display and operable to receive a user input. The dynamic keypad allows a user to select, adjust, and monitor a plurality of energy-savings modes of the load control system. For example, the dynamic keypad allows the user to enable and adjust a setback temperature of the temperature control device on-the-fly.

The invention provides a structurally-simplified energy-saving multi-layer hollow glass shutter and belongs to the technical field of hollow glass products. The structurally-simplified energy-saving multi-layer hollow glass shutter comprises an inner frame body, an outer frame body, inner glass, outer glass, middle glass, a blind piece turnover transition mechanism, a shutter blind, a drive controller, blind piece turnover traction ropes and shutter blind lifting traction ropes and is characterized in that the drive controller comprises a manual operation control mechanism, a transition slide mechanism and a blind piece turnover and shutter blind lifting control mechanism, the transition slide mechanism is arranged in an inner hollow cavity and is separated by the inner glass to be magnetically attracted with the manual operation control mechanism, the manual operation control mechanism is matched with the a guide slide groove in a sliding mode, the blind piece turnover and shutter blind lifting control mechanism is arranged in an outer hollow cavity and is separated by the middle glass to be magnetically attracted with the transition slide mechanism, two ends of each blind piece turnover traction rope are fixed to the blind piece turnover and shutter blind lifting control mechanism, and the middles of the shutter blind lifting traction ropes are arranged on the blind piece turnover and shutter blind lifting control mechanism in a sleeving mode. The structurally-simplified energy-saving multi-layer hollow glass shutter is a reasonable choice for a user and is good in energy-saving effect.

An automatic daylighting method adjusts a window covering to block direct sunlight from entering the room through a window when the exterior sky condition is a sunny sky state and, subject to blocking direct sunlight, provides a desired daylighting interior light illuminance level and, if possible, a desired interior solar heat gain through the window. To prevent window covering oscillation, a delay may be used when the sky condition changes from a sunny to overcast state. The covering control may be based on various factors including interior light illuminance entering the window, a room heating or to cooling mode, whether the room is occupied by people, whether occupants have manually operated an adjustable window covering, and the exterior sky condition. The method may also detect an interior temperature level, e.g., to determine a heating or cooling mode of the room.

A backpack engagable so as to be worn and including an attached covering having load-bearing armor and mounted for movement between a stored condition of the armor toward the backpack and a deployed condition of the armor away from and opposing the backpack.

A load control system is operable to control the amount of power delivered to a plurality of electrical loads from an AC power source. The load control system includes a plurality of keypads, which each may include a different button assembly having a different button configuration. Each keypad is operable to determine the button configuration of the button assembly installed on the keypad in response to simultaneous actuations of the top button and the bottom button of the button assembly for a predetermined amount of time. Each keypad is further operable to store in a memory of the keypad data representing the button configuration. Therefore, after the keypad is installed in the field and the button assembly is replaced, the keypad can be easily configured to operate with the new button assembly.