An inverted constant force window balance system has a carrier assembly including a housing with a first and a second housing wall, a coil spring with a free end, and a shoe assembly slidably coupled to the housing. The shoe assembly includes a first and a second shoe face. The housing slides between a first and a second position relative to the shoe assembly. When in the first position, the first and second housing walls are substantially non-coplanar with the first shoe face, and when in the second position, the first housing wall is substantially coplanar with the first shoe face and substantially non-coplanar with the second shoe face. The shoe assembly receives a pivot bar from a window sash and extends a brake upon rotation thereof. The balance system also includes a mounting bracket releasably coupled to the housing and coupled to the free end of the coil spring.

A method of operating a door system includes sensing a user on an exterior side of a door panel in physical propinquity to the lock such that the lock transitions from a sleep state to an active state, authenticating the user when the lock is in the active state before converting the lock from a locked configuration to an unlocked configuration, and converting the lock from the locked configuration to the unlocked configuration in response to transition to the active state. Authenticating the user includes receiving an authentication signal from a remote device on the user in physical propinquity to the to the lock.

A saloon-type door assembly that includes left and right door assemblies that each include a frame adapter having a curved inner surface with a first apex, a front portion and a rear portion, a door adapter that includes a curved outer surface with a second apex a front portion and a rear portion, a door panel associated with the door adapter, at least one front hinge strip secured along a front hinge strip path, and at least one rear hinge strip that is secured along a rear hinge strip path. The front hinge strip path extends from the front portion of the curved outer surface of the door adapter to the rear portion of the curved inner surface of the frame adapter. The rear hinge strip path extends from the rear portion of the curved outer surface of the door adapter to the front portion of the curved inner surface of the frame adapter. The door panels are movable between a front open position, a closed position and a rear open position.

A saloon-type door assembly that includes left and right door assemblies that each include a frame adapter having a curved inner surface with a first apex, a front portion and a rear portion, a door adapter that includes a curved outer surface with a second apex a front portion and a rear portion, a door panel associated with the door adapter, at least one front hinge strip secured along a front hinge strip path, and at least one rear hinge strip that is secured along a rear hinge strip path. The front hinge strip path extends from the front portion of the curved outer surface of the door adapter to the rear portion of the curved inner surface of the frame adapter. The rear hinge strip path extends from the rear portion of the curved outer surface of the door adapter to the front portion of the curved inner surface of the frame adapter. The door panels are movable between a front open position, a closed position and a rear open position.

A fire protection fastening device for fastening a door actuator, includes a frame with a back side, which is to be oriented to a mounting surface, in particular to a door, casing or wall, wherein a mounting axis is defined vertically to the back side. The frame is formed for arrangement between a door actuator and the mounting surface or is an integral component of the door actuator (102), at least one reaction chamber formed in the frame, wherein the frame delimits the reaction chamber on the entire circumference. The reaction chamber is open on the back side and/or on a front side of the frame opposite the back side. The device further includes a drive element made from thermally intumescent material disposed in the reaction chamber and, when activated, is formed for pushing away the door actuator from the mounting surface.

An apparatus comprising a baseplate configured to be coupled to a door configured to be positioned in an open door position, a closed door position, and a plurality of door positions in between the open position and closed position; a motor; a circuitry electrically coupled to the motor and configured to be in communication with a remote computing device; at least one proximity sensor electrically coupled to the circuitry and configured to determine the door position with respect to a door frame; a drive wheel coupled to the motor and the circuitry, the drive wheel comprising an external surface, the external surface of the drive wheel configured to rotatably contact a ground surface; and wherein the motor is configured to be remotely activated by the remote computing device to engage the drive wheel to rotatably contact the ground surface to reposition the door responsive to receipt of a signal.

The present disclosure provides a structure configured to preset an automatic positioning duration to enable hinge blades to be automatically closed, the structure two hinge blades, a threaded sleeve, a fixed rod, a first spring, a electromagnet suction disk, a DC power supply electromagnet, a DC power supply timing controller, a remote control, a plug, and an adjusting base. The two hinge blades are configured to rotate relative to each other, each of the two hinge blades comprises a shaft sleeve and a blade fixed on an outer side of the shaft sleeve, the fixed rod comprises a threaded rod, the threaded sleeve comprises a transmission rod fixed in the shaft sleeve of the two hinge blades, the plug is fixedly disposed in the shaft sleeve of the two hinge blades, the threaded sleeve is separated from the plug, and the fixed rod, the first spring, the electromagnet suction disk, the power supply electromagnet, a bearing, and the adjusting base are disposed between the threaded sleeve and the plug disposed in the shaft sleeve of the two hinge blades. When the hinge blades reach the automatic positioning time preset by the timing controller, so that the hinge blades synchronously cooperates with the demagnetization time point preset by the timing controller. At the same time, the elastic force energy storage of the first spring changes and releases. An application of the present disclosure is wide, and has good industrial applicability.

The present disclosure provides a structure configured to preset an automatic positioning duration to enable hinge blades to be automatically closed, the structure two hinge blades, a threaded sleeve, a fixed rod, a first spring, a electromagnet suction disk, a DC power supply electromagnet, a DC power supply timing controller, a remote control, a plug, and an adjusting base. The two hinge blades are configured to rotate relative to each other, each of the two hinge blades comprises a shaft sleeve and a blade fixed on an outer side of the shaft sleeve, the fixed rod comprises a threaded rod, the threaded sleeve comprises a transmission rod fixed in the shaft sleeve of the two hinge blades, the plug is fixedly disposed in the shaft sleeve of the two hinge blades, the threaded sleeve is separated from the plug, and the fixed rod, the first spring, the electromagnet suction disk, the power supply electromagnet, a bearing, and the adjusting base are disposed between the threaded sleeve and the plug disposed in the shaft sleeve of the two hinge blades. When the hinge blades reach the automatic positioning time preset by the timing controller, so that the hinge blades synchronously cooperates with the demagnetization time point preset by the timing controller. At the same time, the elastic force energy storage of the first spring changes and releases. An application of the present disclosure is wide, and has good industrial applicability.

An emergency opening device for an aircraft door provided with an opening mechanism includes an actuation device (2, 5) for actuating the opening mechanism, having: a tubular operating member (2) equipped with a second locking end (4) that includes a radial retaining finger (19); flexible compression device (5); a retaining member (9) for the second locking end (4), the retaining member (9) including a hook (28) which has a stop surface, the retaining member (9) being rotatable about the movement axis of the operating member (2); activation device (31) for the actuation device (2, 5), adapted to cause the retaining member (9) to open.

Device for opening an aircraft door in emergencies, said door being provided with an opening mechanism, including a device (2, 5) for actuating the opening mechanism, having: a tubular maneuvering member (2), and a second locking end (4) which has a stop surface (43); resilient compression device (5); a member for holding the second locking end (4), the holding member including a rotary lock (9) and a lever (44) which is suitable for cooperating with the stop surface (43), the rotary lock (9) being rotatable about the displacement axis of the maneuvering member (2); device (31) for activating the actuation device (2, 5) which are suitable for driving the rotary lock (9).