A latch assembly connected to the drive unit of a bi-fold door retains the bi-fold door in engagement with upright columns of a building with elongated straps attached to the upright columns and rotatable latch drums mounted on a drive shaft of a drive unit. Lift devices powered by the drive unit raise and lower the bi-fold door. Latch assemblies include springs that maintain tension on the straps during the opening and closing of the bi-fold door.

An elevating-type shelter door enables operators to easily open and close in a short period of time, is highly water-tight, and has an excellent durability. A shelter door opens and closes an opening portion when a door body ascends and descends along a guide rail by means of an elevating device. The opening portion is provided on a ceiling of a shelter body. The shelter body is defines an interior space which serves as an evacuation space in an underground. A main body has a central convex portion which slidably fits to the opening portion along an inclination direction in which both the opening portion and the guide rail inclines. An elevating stand is slidably fixed to move along a rest column. The elevating stand is located above the opening portion when the door body is fully ascended and located in the interior space when the opening portion is closed.

An automated window mechanism is disclosed, including a motor secured to a window, the window being in a frame and wherein the motor causes the window to move relative to the frame in two directions: an open direction being defined as a direction toward which movement of the window relative to the frame causes the window to be more closed, and a closed direction defined as a direction opposite the open direction. The mechanism also includes a transmission component that transfers power from the motor to movement of the window relative to the frame, the transmission component having a backup defined as a distance the transmission component can move from a first point at which further movement in the open direction will cause the window to begin moving in the open direction, and a second point at which further movement in the closed direction will cause the window to begin moving in the closed direction. The mechanism also includes a processor and memory storing one or more computer-readable instructions executable by the processor to perform acts. The acts include instructing the motor to move the window relative to the frame, and upon the window reaching a desired position relative to the frame, reversing the transmission component into a neutral range within the backup to release energy stored in the transmission component.

The present disclosure relates to an electric lift gate and a vehicle. The electric lift gate includes: two side bars opposed and spaced apart, and the two side bars being provided with a guiding groove, respectively, the guiding groove extending along a length direction of the side bar; a roller shutter assembly disposed between the two side bars, two opposite sides of the roller shutter assembly being slidably disposed in the corresponding guiding grooves, respectively; a winding assembly cooperating with the roller shutter assembly in a driving manner; and a driving assembly connected to the winding assembly, and configured to drive the winding assembly to rotate, so as to drive the roller shutter assembly to wind or unwind.

A bi-fold door is opened with a lift assembly having a plurality of straps attached to power driven lift drums. A latch assembly retains the closed bi-fold door secure to side columns of a building. The latch assembly has a latch strap attached to a latch drum that accommodates the latch strap to hold the closed bi-fold door in contact with the side columns of the building. A floor anchor assembly anchors the bottom of the closed bi-fold door to the floor below the closed bi-fold door to stabilize and inhibit bending and deformation of the bi-fold door frame.

A latch assembly connected to the drive unit of a bi-fold door for retaining the bi-fold door secure to a building has elongated straps attached to rotatable latch drums mounted on the outer ends of the drive shaft of the drive unit. Lift drums powered by a motor driven gearbox raise and lower the bi-fold door. Latch assemblies having springs attached to the straps maintain tension on the straps during the opening and closing of the bi-fold door.

A sectional door operator system (I) opens and closes an opening (2) by operating a plurality of horizontal and interconnected sections (9a-e) that form a sectional door. A door frame (3) is formed by 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). The plurality of horizontal and interconnected sections (9a-e) are connected to the door frame (3) to move between an open and a closed position. A drive unit (IO) is mounted on a section (9e) of the door. The drive unit (IO) is arranged to move the sectional door (8) from the closed position (C) to the open position (0). The drive unit (IO) includes a first motor (I la) and a second motor (I lb, which are mounted at different vertical sides of the horizontal and interconnected section (9e). A control unit (20) controls the operation of the drive unit (IO). A first sensing element (30a) and a second sensing element (30b) provide operational data of the first and second motor (1 la, 1 lb) to the control unit (20).

A sectional door operator system (I) opens and closes an opening (2) by operating a plurality of horizontal and interconnected sections (9a-e) that form a sectional door. A door frame (3) is formed by 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). The plurality of horizontal and interconnected sections (9a-e) are connected to the door frame (3) to move between an open and a closed position. A drive unit (IO) is mounted on a section (9e) of the door. The drive unit (IO) is arranged to move the sectional door (8) from the closed position (C) to the open position (0). The drive unit (IO) includes a first motor (I la) and a second motor (I lb, which are mounted at different vertical sides of the horizontal and interconnected section (9e). A control unit (20) controls the operation of the drive unit (IO). A first sensing element (30a) and a second sensing element (30b) provide operational data of the first and second motor (1 la, 1 lb) to the control unit (20).

ASSA ABLOY Entrance Systems AB has developed the present invention relates to a connection device (100) for a door operator system(S) for opening and closing an opening (O). Said door operator system(S) comprises a door (20) and a drive unit mounted on said door (20) and arranged to move the door (20) between an open and closed position. The door operator system comprises an elongated transmission member (40) extending along a side of the opening (O), wherein a driven transmission member (34) of said drive unit (30) is arranged to interplay with said first elongated transmission member (40) so as to move the door (20) between the closed and open position. Said tension arrangement (100) comprises a bracket member (110) for facilitating attachment of said tension arrangement (100); a tension device (T) comprising a connection member (120) for connecting said first elongated transmission member (40) and a spring arrangement (130) comprising a spring member (132). Said spring arrangement (130) is configured to be connected to said connection member (120) so as to facilitate adapting the spring load of said spring member (132). Said tension device (T) is configured to be arranged in connection to said bracket member (110) so that tension of said first elongated transmission member (40) is facilitated. The present invention also relates to a door operator system.

ASSA ABLOY Entrance Systems AB has developed the present invention relates to a connection device (100) for a door operator system(S) for opening and closing an opening (O). Said door operator system(S) comprises a door (20) and a drive unit mounted on said door (20) and arranged to move the door (20) between an open and closed position. The door operator system comprises an elongated transmission member (40) extending along a side of the opening (O), wherein a driven transmission member (34) of said drive unit (30) is arranged to interplay with said first elongated transmission member (40) so as to move the door (20) between the closed and open position. Said tension arrangement (100) comprises a bracket member (110) for facilitating attachment of said tension arrangement (100); a tension device (T) comprising a connection member (120) for connecting said first elongated transmission member (40) and a spring arrangement (130) comprising a spring member (132). Said spring arrangement (130) is configured to be connected to said connection member (120) so as to facilitate adapting the spring load of said spring member (132). Said tension device (T) is configured to be arranged in connection to said bracket member (110) so that tension of said first elongated transmission member (40) is facilitated. The present invention also relates to a door operator system.