The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a drip cap of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.

The aim of the invention is to achieve a door closer arrangement (1) where the force needed for opening the door (2) is not so substantial. The invention comprises a door closer (6), a slide rail (7), and an arm (8) that connects the door closer with the slide rail. The arrangement comprises also a second rail (9), which is arranged to form a slide slope for the door closer (6).

The aim of the invention is to achieve a door closer arrangement (1) where the force needed for opening the door (2) is not so substantial. The invention comprises a door closer (6), a slide rail (7), and an arm (8) that connects the door closer with the slide rail. The arrangement comprises also a second rail (9), which is arranged to form a slide slope for the door closer (6) and the auxiliary spring arrangement.

The aim of the invention is to achieve a door closer arrangement where the force needed for opening the door is not so substantial. The invention comprises a door closer, a slide rail, and an arm that connects the door closer with the slide rail. The arrangement comprises also a second rail, which is arranged to form a slide slope for the door closer and the auxiliary spring arrangement.

A clamp (1) for attaching a component (3) to a back plate (2), said clamp (1) comprises two clamp members (11, 12), the clamp members (11, 12) being connected by a fastener (13) configured to apply a force at least in a direction which brings the clamp members (11, 12) closer together, and wherein each clamp member (11, 12) is configured to cooperate with a retaining shoulder (31) of the component (3).

A gate assembly is formed from a gate attached by hinges to a frame. A pair of L-shaped brackets are attached to the outer sides of the frame. The brackets are in turn attached to a pair of gate posts in a barrier. Bolt holes formed in the header section of the frame receive removable eye bolts that may be used as hoisting points as the frame is being positioned within a barrier. To maintain the shape of the frame during such positioning, a removable sill section is included in the base of the frame. The first upright section of the frame defines an unobstructed internal channel bounded by input and output portals. A cable may pass though the channel and into the gate by way of the output portal. Window openings in the gate may be fitted with removable window panels containing pickets and infill material. Dual gates may be positioned within an enlarged frame, and a removable mullion post positioned between the gates and supported by the frame.

A linkage for force transmission between a driven axle of a door actuator and an assembly surface, includes a hinge, a fastening arrangement designed for fastening the hinge to the assembly surface, in particular a door, frame or wall, wherein an assembly axis is defined perpendicularly to the assembly surface, and a lever arrangement which is fastened to the hinge so as to be rotatable about a hinge axis perpendicular to the assembly axis and which is designed for rotationally-fixed connection to the driven axle of the door actuator. The linkage is designed to detach through the weight of the door actuator falling down in the event of a fire and/or wherein the linkage includes a thermally activatable trigger element that is designed to detach the linkage in the event of thermal activation triggered by a fire.

A guiding rail for guiding a door leaf between an opening position and a closing position in relation to a door opening in a wall includes: at least one guiding section with a guiding compartment, in which a sliding element is accommodated to be movable, wherein the guiding section includes a guiding opening, through which a bearing axis of the sliding element exits at least partially from the guiding compartment, at which axis a lever element is supportable to be rotationally movable, in order to establish an operative connection between the sliding element and the door leaf. The guiding rail further includes at least one functional section with a functional compartment, in which a transmission means is receivable, which serves for transferring electrical energy and/or data between at least a wall-sided energy source and a door leaf-sided energy recipient and a labyrinth guide between the guiding and functional compartments.

An example door closer includes a casing and a pinion rotatably mounted to the casing. The pinion is operable to rotate through a plurality of movement zones, and the door closer is configured to exert forces on the pinion as the pinion moves through the plurality of movement zones. The door closer further includes a plurality of adjustment mechanisms, each operable to adjust the force exerted on the pinion as the pinion travels through a corresponding movement zone. The casing is provided with indicia that correlate each of the adjustment mechanisms to the corresponding movement zone.

A modular door operating linkage system connectable to an extendable from a door pivotable between closed and open positions about a generally vertical axis disposed such that the door can be either pushed or pulled between positions. The modular linkage system includes a rigid generally L-shaped crank arm component connected to a powered driver which drives the crank arm component in opposite arcuate directions. The modular linkage system also includes a rigid elongated track component defining a generally C-shaped linear channel. The modular linkage system also includes a rigid but adjustable multipiece link component. The linkage system further includes a rigid block component which is configured and designed to act in concert with the other components of the linkage system. The various components of the linkage system are designed and configured relative to each other such that they can be selectively interchanged with and connected to each other and to the door in a multitude of different arrangements and scenarios to easily and readily accommodate different environments wherein the door is utilized. A method for connecting a door to a powered driver is also disclosed.