A door drive mechanism includes a main drive and an auxiliary drive.

In this connection it is provided that the drive assembly of the auxiliary drive is formed as a drive assembly with a linear output and that the drive assembly of the auxiliary drive is borne in a pivot bearing and that the rod system is formed as a slide arm and the rod system bearing is formed as a slide rail.

A door drive mechanism includes a main drive and an auxiliary drive.

In this connection it is provided that the components of the main drive and of the auxiliary drive to be mounted on the door leaf side are borne in or on a common and/or continuous housing mechanism and/or bearing framework mechanism and/or mounting plate mechanism to be mounted on the door leaf side and/or are covered by a common and/or continuous cover to be mounted on the door leaf side.

A door closer assembly for an entryway device having a position sensor that assists in determining the location of the door closer assembly, and thus the location of the associated entryway device, relative to at least an entryway. The position sensor can be coupled to, and/or part of, the door closer assembly. Information obtained by the position sensor may be used by one or processing devices of an access control system to determine whether the door closer assembly and/or the entryway device is at the closed location, among other locations, as well as the direction(s) of displacement of the entryway device. Such information may be utilized in calibrating other devices, as well as determining the occurrence of a number of events, including unauthorized displacement or holding of the entryway device. A timer may also be utilized to further evaluate the nature of the displacement of the entryway device.

The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.

A door assembly for a vehicle includes a door and a check strap pivotally coupled to the door. An engagement member is releasably engageable with the check strap. A spring is positioned to bias the check strap toward the engagement member. When the engagement member is engaged with the check strap, the check strap maintains the door in an open position. When the engagement member is disengaged with the check strap, the door is swung to the closed position under the bias of the spring.

An automated door closure system regulate the release and closure of a door in a door assembly that includes a primary door, a secondary door, and a door frame. The system includes a door closer, a control unit, and an automatic input sensor. The door closer, which is connected between the secondary door and the door frame and includes a cylinder and an operating rod, biases the secondary door toward a closed position. The control unit includes a motive device and a rod catch element. The rod catch element, which may be moved by the motor, is positioned in proximity to the operating rod to adjustably prevent the secondary door from being closed. The automatic input sensor detects a door assembly use condition. The control unit controls the motive device based on the detected condition to move the rod catch element, allowing the door closer to close the secondary door.

A store management server configured to communicate with a first gate control device that controls a first gate installed in a store includes a network interface, and a processor configured to identify a customer entering the store, acquire customer information about the detected customer, detect that the customer is holding a commodity in the store, acquire sales restriction information about the commodity held by the customer, determine whether the customer is eligible to buy the commodity held by the customer based on the acquired customer information and sales restriction information, and control the network interface to transmit, when it is not determined that the customer is eligible to buy the commodity, a first command to the first gate control device. The first command causes the first gate control device to close the first gate.

A hold-open arrester arrangement has a low power consumption, and therefore a battery lifetime is long in the embodiments of the invention utilizing the battery. The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.

A store management server configured to communicate with an alert device installed in a store, includes a network interface and a processor configured to identify a customer entering the store, acquire customer information about the identified customer, detect that the customer is holding a commodity in the store, acquire sales restriction information about the commodity held by the customer, determine whether the customer is eligible to buy the commodity held by the customer based on the acquired customer information and sales restriction information, and control the network interface to transmit, when it is not determined that the customer is eligible to buy the commodity, a first command to an alert device. The first command causes the alert device to output an alert.

An exemplary armature assembly is configured for use with a door closer comprising a pinion, and generally includes a first arm configured for rotational coupling with the pinion, a second arm pivotably coupled to the first arm at a pivot joint, and a hold-open mechanism. The hold-open mechanism generally includes a clutch having a decoupling and a coupling state, and an electromechanical driver operable to transition the clutch between the coupling state and the decoupling state. With the clutch in the decoupling state, a first torque is operable to cause relative pivoting of the arms. With the clutch in the coupling state, the first torque is inoperable to cause relative pivoting of the arms, and a second torque greater than the first torque is operable to cause relative pivoting of the arms.