An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.

An apparatus comprising a baseplate configured to be coupled to an interior side of an inswing door adjacent a pivot edge of the door; a rotatable closing arm with a first end and a second end, the second end coupled to a motor, the motor configured to be engaged in response to receipt of a signal from a remote electronic device; and circuitry electrically coupled between a power supply and the motor, the circuitry configured to wirelessly send and receive information to and from the remote electronic device.

An embodiment is a vehicle door opening and closing apparatus including a vehicle door configured to be selectively opened and closed in a mode of a sliding mode and a swing mode to uncover and cover a door opening of a vehicle body. The vehicle door opening and closing apparatus further including a rail mounted on the vehicle body, a roller unit including a roller and a hinge element, the roller being configured to be guided along the rail, the hinge element being spaced apart from the roller, a door-side bracket mounted on the vehicle door, the door-side bracket being detachably connected to the roller unit, and a body-side bracket mounted on the vehicle body, the body-side bracket being detachably connected to the roller unit.

An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.

An exemplary modular hold-open device is configured for use with a door closer comprising a body, a pinion rotatably mounted to the body, and an armature connected with the pinion. The modular hold-open device is configured to be mounted to the door closer, to selectively prevent rotation of the pinion by exerting on the pinion a resistive torque in a door-opening direction, and to cease exerting the resistive torque in response to a door-closing torque on the pinion exceeding a threshold torque to thereby permit rotation of the pinion in the door-closing direction.

An entrance system (1) comprising a swing door member (10) having a door leaf (12), and an automatic door operator (30) is provided. The automatic door operator (30) has a motor (34) capable of causing movement of the door member (10), a controller (31) for controlling operation of the motor (34), and the automatic door operator (30) being operable in a testing mode (60) and an operational mode, wherein the controller (31) is configured, in the testing mode (60), to automatically determine at least one test parameter; and causing an action in response to the determined test parameter.

An apparatus comprising a baseplate configured to be coupled to an interior side of an inswing door adjacent a pivot edge of the door; a rotatable closing arm with a first end and a second end, the second end coupled to a motor, the motor configured to be engaged in response to receipt of a signal from a remote electronic device; and circuitry electrically coupled between a power supply and the motor, the circuitry configured to wirelessly send and receive information to and from the remote electronic device.

A decelerated hinge for supporting, so as to oscillate, a door of an item of furniture, which comprises a first hinge part which can be affixed to a fixed part of the item of furniture, a second hinge part which can be affixed to a door of the item of furniture and connected to the first hinge part by way of an articulation system which comprises a plurality of connecting levers and at least five articulation axes, and a deceleration device which comprises an actuating member that is moveably arranged in a first connecting lever of the articulation system, and at least one actuation surface for the actuating member of the deceleration device is provided inside a second connecting lever which is adjacent to the first connecting lever of the articulation system.

A retraction device for two end positions has two driving elements which are connected to one another by a spring energy accumulator. Each driving element is displaceably mounted in a respective guide housing. A sliding door has such a retraction device, and a sliding door arrangement has such a sliding door. Each driving element is coupled or can be coupled to a cylinder-piston unit mounted in the respective guide housing. Both guide housings are adjustable relative to one another in the longitudinal direction of the retraction device by means of at least one sliding joint. This provides a retraction device for two end positions, which can be used for a range of door widths without design modifications.

A power window device includes a control unit configured to monitor a first potential at one end of a first switch circuit including a window closing switch and a second potential at one end of a second switch circuit including a window opening switch, and determine that submersion has occurred when the first or second potential is in a first or second submersion potential range. During a normal time, the control unit outputs a window closing command signal when the first potential is a potential at a time of the window closing switch being operated, and outputs a window opening command signal when the second potential is a potential at a time of the window opening switch being operated. At a time of submersion, the control unit does not output the window closing command signal, and outputs the window opening command signal.