A balance system used with a door of a cupboard comprises a transmission shaft, a first pulley on the transmission shaft, and a balance component. The first pulley is connected to a door belt, one end of the door belt is secured to the first pulley, and the other end of the belt is connected to the door. The balance component comprises a balancing member, a balancing belt and a second pulley on the transmission shaft. One end of the balancing belt is connected to the second pulley, and the other end of the balancing belt is connected to the balancing member, such that the balancing member is hung on the second pulley. The first pulley and the second pulley rotate synchronously, and the door belt and the balancing belt are wound oppositely. With the balance system, a small driving force can open/close the door.

A balance system used with a door of a cupboard comprises a transmission shaft, a first pulley on the transmission shaft, and a balance component. The first pulley is connected to a door belt, one end of the door belt is secured to the first pulley, and the other end of the belt is connected to the door. The balance component comprises a balancing member, a balancing belt and a second pulley on the transmission shaft. One end of the balancing belt is connected to the second pulley, and the other end of the balancing belt is connected to the balancing member, such that the balancing member is hung on the second pulley. The first pulley and the second pulley rotate synchronously, and the door belt and the balancing belt are wound oppositely. With the balance system, a small driving force can open/close the door.

A mechanism for vertically sliding a windowed frame in one track alongside a static frame installed in a second track. The mechanism consists of two vertical racks installed on the sliding frame, which engage with two pinions coupled with a joint axle which are installed within the lower horizontal plank of the static frame. Turning the joint axle turns also the pinions which move the frame vertically. There are two options for turning the joint axle. The manual option involves turning a crank, the electrical option involves an electric motor coupled with a gearbox. The electrical option also includes a control unit for controlling the direction and speed of the sliding, two limit switches for stopping the frame at highest and lowest positions, an electrical overload sensor which detects sudden sliding obstructions and a burglar alarm. The sliding frame also includes four rollers which reduce the sliding friction.

This electric screen device is provided with an electric motor that causes slidable screen mounting frame part(s) to automatically slide. Torque generated by rotation of a rotation shaft of the electric motor is transmitted to a tension member that is provided inside the screen mounting frame parts, that connects screen guiding frame parts to each other at free ends thereof, and that forms a loop. The tension member moves in a state of being hung around the folded portions which apply tension to the tension member. The slidable screen mounting frame part(s) automatically slide in association with movement of the tension member. Thus, the screen automatically opens and closes.

This electric screen device is provided with an electric motor that causes slidable screen mounting frame part(s) to automatically slide. Torque generated by rotation of a rotation shaft of the electric motor is transmitted to a tension member that is provided inside the screen mounting frame parts, that connects screen guiding frame parts to each other at free ends thereof, and that forms a loop. The tension member moves in a state of being hung around the folded portions which apply tension to the tension member. The slidable screen mounting frame part(s) automatically slide in association with movement of the tension member. Thus, the screen automatically opens and closes.

A system and method for controlling movement of a door or other apparatus, such as to provide and restrict access to a chicken coop, including a plurality of input devices, a plurality of output devices, and a microprocessor configured on a circuit board to detect signals from the input devices, process the signals, and based upon predetermined logic generate and transmit output signals to the output devices. One of the input devices is a wireless smart switch remotely controlled by a user, which transmits electric current based upon user input such that when the user input indicates an intention that the apparatus move in a first direction, the switch will transmit electric current, and when the user input indicates an intention that the apparatus move in a second direction, the switch will stop transmitting electric current.

A system and method for controlling movement of a door or other apparatus, such as to provide and restrict access to a chicken coop, including a plurality of input devices, a plurality of output devices, and a microprocessor configured on a circuit board to detect signals from the input devices, process the signals, and based upon predetermined logic generate and transmit output signals to the output devices. One of the input devices is a wireless smart switch remotely controlled by a user, which transmits electric current based upon user input such that when the user input indicates an intention that the apparatus move in a first direction, the switch will transmit electric current, and when the user input indicates an intention that the apparatus move in a second direction, the switch will stop transmitting electric current.

Methods and apparatus to wirelessly interlock doors are disclosed. A door system includes a user interface to receive interlock configuration data input from a user, the interlock configuration data to define an interlock condition to be satisfied before a first door is to undergo an operation, the interlock condition associated with a current state of a second door. The door system includes a first wireless transceiver to receive a signal from a second wireless transceiver associated with a second door. The method includes a door operation controller to at least one of (1) implement the operation of the first door in response to a request when the current state of the second door satisfies the interlock condition, (2) ignore the request, or (3) not execute the operation of the first door in response to the request when the current state of the second door does not satisfy the interlock condition.

A controlled, motorized mechanism to actuate a sash type window opened and closed. The system provides a set of motors, each positioned on either side of a window, that are controlled by a motor controller that receives feedback on the progression of rotation of the motors as they actuate each side of the window. The feedback is then utilized to control each of the motors. This controlled system ensures that one side of the window does not become raised or lowered further in its channel than the opposite sideor rackedand thus increase the friction against the frame that would disable any further progress actuating said window.

A controlled, motorized mechanism to actuate a sash type window opened and closed. The system provides a set of motors, each positioned on either side of a window, that are controlled by a motor controller that receives feedback on the progression of rotation of the motors as they actuate each side of the window. The feedback is then utilized to control each of the motors. This controlled system ensures that one side of the window does not become raised or lowered further in its channel than the opposite sideor rackedand thus increase the friction against the frame that would disable any further progress actuating said window.