A control system includes a sensor system that may detect entry of a person into a detection curtain in front of a door, and a controller that may receive a first signal from the sensor system indicating the entry of the person into the detection curtain. The controller may determine a state of the door and generate a second signal responsive to receiving the first signal and while the state of the door indicates that the door can be opened. The control system also may include one or more actuators that may be coupled with the door and to open the door without the person touching the door responsive to receiving the second signal from the controller.

A retention assembly may comprise a motor assembly and a self-locking worm drive coupled thereto. A cam may be fixed to a worm gear of the worm drive. The retention assembly may further comprise an actuation shaft including a follower. The actuation shaft may be displaceable over a displacement range via rotation of the cam. The retention assembly may further comprise a securement member with a securement member follower, the securement member coupled to a portion of the actuator shaft. The retention assembly may further comprise a housing cam included as part of the retention assembly housing and against which the securement member follower may be biased. The securement member may be in an open state when the actuation shaft is in a first position. The securement member may swing outward to a retaining position as the actuation shaft is moved to a second position.

A gray code driving device for an electric roller shutter contains: a base, a transmission assembly, and a torque detection unit. The base includes an accommodating space for accommodating the transmission assembly and the torque detection unit and includes a rotary cover connected with the transmission assembly. The transmission assembly includes an electric motor for supplying power source, and the base further includes a digital module for controlling the electric motor. The torque detection unit is in connection with the transmission assembly and is driven by the transmission unit to encode gray codes, wherein the torque detection unit is electrically connected with the digital module to transmit the gray codes.

A door operator assembly is configured to raise and lower a cargo door of a cargo enclosure. The assembly includes a power and control unit mounted on an exterior of the cargo enclosure. The power and control unit includes a motor, a coupler operatively connecting the motor to a torsion assembly of the cargo door, a manual release mechanism for actuating the coupler to connect and disconnect the motor and the torsion assembly of the cargo door, and a control circuit for the motor. The assembly may also include an operating switch disposed on the exterior of the cargo enclosure.

A system and method of operating a power tailgate assembly for a vehicle. The system can detect that a tailgate, connected to the vehicle by a pivotal connection and having an open position and a closed position, is in the open position, detect that the vehicle is being driven, detect, by one or more sensors, a movement of the tailgate, and control a motor assembly to restrain movement of the tailgate and return the tailgate to the open position in response to detecting that the tailgate is in the open position, the vehicle is being driven, and the tailgate has moved more than a threshold amount.

A refrigerator includes a cabinet, a door and a hinge assembly connecting the door and the cabinet. A sensor detects an opening angle of the door. The sensor includes: a first component and a second component, where one of the first component and the second component is a magnetic element, and the other one is a magnetic sensing element. The first component is provided at the hinge assembly, and the second component is provided at the door. This enables the magnetic sensing element to accurately sense a magnetic field of the magnetic element, and simplify a structure of the cabinet.

A sectional door operator system (1) for opening and closing an opening (2) is provided herein. The sectional door operator system (1) comprises a door (8) arranged to be moved between an open (O) and closed (C) position and comprising a plurality of horizontal and interconnected sections (9a-e), and a door frame (3) comprising a first frame section (4) at a first side (5) of the opening (2) and a second frame section (6) at a second side (7) of the opening (2), wherein the plurality of horizontal and interconnected sections (9a-e) are connected to the door frame (3). The sectional door operator system (1) further comprises a drive unit system (100) mounted on a section (9e) of the plurality of horizontal and interconnected sections (9a-e), wherein the drive unit system (100) is arranged to move the sectional door (8) from the closed position (C) to the open position (O), wherein the drive unit system (100) comprises at least a first drive unit (10a) comprising a first motor (11a) and at least a second drive unit (10b) comprising a second motor (11b), and wherein the first drive unit (10a) and the second drive unit (10b) are mounted at different vertical sides of the horizontal and interconnected section (9e). Further, the sectional door operator system (1) comprises at least one sensor device (40a, 40b) mounted on a section (9e) of the plurality of horizontal and interconnected sections (9a-e), and at least one control unit (20a, 20b) being in operative communication with the drive unit system (100) and configured to control the operation of the drive unit system (100) at least based on sensor data (42) from the at least one sensor device (40a, 40b), wherein the sensor data (42) relates to an angle (φ) of the door (8) in relation to a true horizontal plane of the sectional door operator system (1).

The invention relates to a device (1) for detecting the position of an automated door, and a method of installation thereof, wherein the device comprises a connector (4, 20) adapted to couple the device to a door drive shaft (28, 32) moving an automated door such as a sectional overhead door, an encoder means (5) coupled to the connector (4, 20) and generating a position signal based on the movement of the door drive shaft (28, 32), which position signal is indicative of the door position, communication means connected to the encoder means (5) for transferring the position signal to a controlling device (34), and mounting means (2, 3) for mounting the device.

An electronic locking device to secure linear transitioning or sliding doors. The electronic lock may include a bolt driven by a motor between a locked or extended position and an unlocked or retracted position. The bolt may be coupled to a sled, the sled moved by the motor between a forward position, placing the bolt in the locked position, and a rearward position, placing the bolt in the unlocked position. The motor may drive a drive screw to move the sled.

The present invention relates to a refrigerator. A refrigerator according to an aspect includes a cabinet in which a storage compartment is formed; a first refrigerator door which is capable of opening and closing the storage compartment; second refrigerator door which is disposed along with the first refrigerator door in a lateral direction; and a door opening device which is capable of operating in order to open and close at least one of the first refrigerator door and the second refrigerator door, wherein the door opening device includes a motor for generating a driving force; a push rod which operates by receiving the driving force generating from the motor; a gear for transferring the driving force of the motor to the push rod.