A concealed hinge for the rotatable movement of a door fixed to a door frame. The hinge includes: a fixed hinge body anchorable to the frame; a movable hinge body anchorable to the door; a connecting assembly for mutual connection of the fixed hinge body and movable hinge body so that the latter rotates with respect to the former about a first longitudinal axis between an open position and closed position. The fixed (or movable) hinge body includes a first (or second) box-shaped element concealedly insertable within the door (or frame). The first (or second) box-shaped element defines a second axis parallel to the first axis. The connecting assembly protrudes from the first box-shaped element in the open position of the movable element, the first box-shaped element being susceptible to internally contain the connecting assembly in the closed position of the movable element.

A security door configured to provide controlled access through a doorway wherein the security door of the present invention includes all elements to offer a touch-less entry and further provide compliance with building codes and visual surveillance. The security door of the present invention includes a door member being hingedly mounted on a doorway. The door member includes an integrally mounted controller that is operably coupled to a communications network via a network module and communications cable. The controller is operably coupled to a card scanner module and a switch module that operate to provide verification of an individual and move the door member to an open position. The door member further includes an integrally mounted power supply and at least one camera module wherein the camera module is operable to capture photographic images. A light module and egress module are integrally mounted to the door member.

A drive unit for a sliding arrangement, in particular a sliding door, includes a carriage, which is formed for linearly mobile mounting in relation to a sub-structure of the sliding arrangement, a deflection roller rotatable around a roller axis at the carriage for deflecting a drive belt of the sliding arrangement, and a tensioning device, having a shaft with male thread rotatable around a shaft axis, a first shaft reception with female thread for receiving the male thread of the shaft, a second shaft reception for linear mobile reception of the shaft, and a compression spring between the second shaft reception and a spring abutment at the shaft. The shaft is disposed for tensioning the drive belt by increasing the distance between the first shaft reception and the second shaft reception.

A damper with hidden rail, comprising a shell and a damper, the damper comprises a tension piece, a sliding block, a telescopic cylinder and a limiting piece, the sliding block is slidably mounted in the shell, and the tension piece is connected to the shell and the sliding block; the tension piece is capable of pulling the sliding block to move; the limiting piece is connected to the sliding block, and the telescopic cylinder is mounted on the shell; the limiting piece is provided with a compression surface, one end of telescopic cylinder abuts against the compression surface directly or indirectly, and the telescopic cylinder and the limiting piece have a first relative position and a second relative position; in the process that the tension piece pulls the sliding block, the telescopic cylinder moves; and in the process that the telescopic cylinder moves, the telescopic cylinder is gradually compressed.

Methods and systems are described for robot transportation of objects into or out of a home automation system. One example may include determining, by a mobile robotic device, that an object is available to cross a boundary of the home automation system. The method may include deactivating at least a portion of the home automation system. The method also include retrieving, by the mobile robotic device, the object and transporting, by the mobile robotic device, the object across the boundary. The method further includes leaving, by the mobile robotic device, the object at a drop-off location. The method may also include reactivating at least the portion of the home automation system.

A retraction device includes a housing and a driving element guided in the housing between a parked position and an end position. A first end of a spring energy accumulator is connected to the housing. The spring energy accumulator is loaded to a maximum operating value when the driving element is in the parked position and is unloaded to a residual energy value when the driving element is in the end position. A second end of the spring energy accumulator can either be fixed to the housing or coupled to the driving element by means of a bistable coupling. The coupling has a blocking element that can be moved between the housing and the driving element.

A crank handle assembly for actuating a panel of a fenestration unit relative to a frame includes an arm. The arm is elongate and is configured to be supported at one end by the frame for rotation to actuate the moveable panel relative to the frame. The crank handle assembly also includes a knob that is moveably attached to an opposite end of the arm and that extends therefrom. The knob is supported for movement between an aligned position and a misaligned position relative to the arm. The arm and the knob cooperatively define a crank handle longitudinal axis. The knob, in the aligned position, is aligned with the arm and the crank handle longitudinal axis is straight. The knob, in the misaligned position, is misaligned with the arm, and the crank handle longitudinal axis is nonlinear.

Disclosed herein is a continuous hinge. The continuous hinge comprises a first hinge portion comprising a first plurality of knuckles; and a second hinge portion opposing the first hinge portion and comprising a second plurality of knuckles. The second plurality of knuckles is interdigitated with the first plurality of knuckles and pivotally coupled to the first plurality of knuckles. Each knuckle is a separate piece.

The invention relates to a planar spiral gearbox, in particular for use in a door system, comprising: a gear, in particular a scroll plate, having a planar side on which a spiral toothed arrangement is arranged having at least one tooth that has a spiral tooth progression; and a cylindrical gear, in particular a torus gear, that has an external toothed arrangement at its jacket surface, wherein the spiral toothed arrangement of the gear is in meshing engagement with the external toothed arrangement of the cylindrical gear, with the gear having at least one additional toothed arrangement section that is radially spaced apart from an axis of rotation of the gear and serves for engagement of a drive toothed arrangement.

The invention relates to a door arrangement (1) for a first enclosed space enabling a sealed connection between the first enclosed space and a second enclosed space, comprising a flange (2) defining an opening into the first enclosed space, a door (4) hingedly mounted on the flange (2), means for securing the flange of the second space pressed against the flange of the first space, the means comprising locking catches (8) which are movable between an unlocked position in which they are recessed inside the flange (2) and a locked position in which they project radially from the flange (2) to the opening, thereby locking the flange of the second space without rotating the flange (2) by engaging each catch in a notch provided on the outer peripheral edge of the flange of the second space.