In the roof window, each hinge of (1010) of the set of hinges comprises a frame hinge part (1030), a sash hinge part (1040), and a movement supporting assembly comprising guiding means including a linkage mechanism with at least two links (1050, 1060) providing connection between the sash hinge part and the frame hinge part. The links (1050, 1060) of the linkage mechanism are connected to each other in a bearing axle (1055). One or more joints between the links and the frame and sash hinge parts comprises a sliding joint (1056, 1062) cooperating with a guide track (1036, 1045) and another joint may be a sliding joint or a hinged joint (1051, 1061). One or both of the guide tracks (1036, 1045) may comprise a curved portion.

In the roof window, each hinge (310) of the set of hinges comprises a frame hinge part (330), a sash hinge part (340), and a movement supporting assembly comprising guiding means including a linkage mechanism with at least two links (350, 360) providing connection between the sash hinge part and the frame hinge part. Each link is connected to at least one of the frame hinge part and the sash hinge part at a joint and connected to each other. A force transmission device (370) is provided for exerting lifting assistance to the movement of the sash (2) relative to the frame (1) during opening of the roof window in the mounted condition of the hinge (310). The force transmission device is provided with biasing means selected from the group comprising leaf springs, torsion springs and tension/compression springs. The force transmission device (370) may comprise a pick-up (371) biased by a leaf spring (372) connected to the frame hinge part (330) or the sash hinge part (340) by means of a fastening protrusion (375a) and/or a first abutment protrusion (375b) and/or a second abutment protrusion (375c).

In the roof window, a stationary primary frame (1) with frame members includes two opposing side members (1a), a first secondary frame includes a sash (2) with two opposing side members (2a), and a second secondary frame including an intermediate frame (6) are provided. A lifting device (7) including a spring assembly (7a) acting on a lifting arm (7b) is inserted between the stationary primary frame (1) and the intermediate frame (6). A top hinge arrangement (8) is connected to the primary frame (1) and to the sash (2) and the intermediate frame (6) to define a first hinge axis (?1) at or near a top of the roof window in a first operational condition of the roof window. To provide a second operational condition of the roof window, the hinge arrangement comprises a set of hinges (10) connected to the intermediate frame (6) and to the sash (2) to define a second hinge axis of the roof window in the second operational condition of the roof window. Each of the hinges (10) comprises a frame hinge part, a sash hinge part, and a movement supporting assembly with a linkage mechanism comprising a number of links and joints.

In the roof window, each hinge (110) of the set of hinges comprises a frame hinge part (130), a sash hinge part (140), and a movement supporting assembly comprising guiding means including a linkage mechanism with at least two links (150, 160) providing connection between the sash hinge part and the frame hinge part. Each link is connected to at least one of the frame hinge part and the sash hinge part at a joint and connected to each other. The hinge (110) furthermore comprises a braking device (180) acting on at least one element of the movement supporting assembly over at least a part of the opening and/or closing movement. The braking device (180) comprises one or more friction elements.

The hinge (10) is intended for a roof window having a frame and a sash, and has a frame hinge part (100) and a sash hinge part (200) configured to assume an angle relative to the frame hinge part (100). Each hinge part (100, 200) has a base plate (110, 210) with a guide track (112, 212) and a link (120, 220), the links (120, 220) being connected to each other at a bearing axle (123). Each link (120, 220) has a first hinged joint (121, 221) to the respective base plate (110, 210) and a sliding joint (122, 222) slidably received in the guide track (212, 112) in the base plate (210, 110) of the other hinge part (200, 100). A pick-up element (130, 230) is connected to the base plate (110, 210) in a second hinged joint (131, 231) and is biased by a spring (140, 240) to act on the sliding joint (222, 122) in the guide track (112, 212), for instance within a predefined angle interval.

A skylight or roof hatch that is manually opened and closed. The skylight is formed of a window mounted to a casing frame by way of one or more hinges which allows the window to open and close. One more gas springs mounted between the window and the casing frame are configured to exert a force against the inside of the window. The gas springs are used to urge the window into an open position. Once in the open position, the window is closed by overcoming the force exerted by the gas springs. This is achieved by winding in a cable that is connected to the window. A single pulley wheel is part of a control unit which is utilized to spool in the cable connected to the window in order to close the window and to unlock a reel lock to allow for automatic opening of the window.

The hinge (10) is intended for a roof window having a frame and a sash, and has a frame hinge part (100) and a sash hinge part (200) configured to assume an angle relative to the frame hinge part (100). Each hinge part (100, 200) has a base plate (110, 210) with a guide track (112, 212) and a link (120, 220), the links (120, 220) being connected to each other at a bearing axle (123). Each link (120, 220) has a first hinged joint (121, 221) to the respective base plate (110, 210) and a sliding joint (122, 222) slidably received in the guide track (212, 112) in the base plate (210, 110) of the other hinge part (200, 100). A pick-up element (130, 230) is connected to the base plate (110, 210) in a second hinged joint (131, 231) and is biased by a spring (140, 240) to act on the sliding joint (222, 122) in the guide track (112, 212), for instance within a predefined angle interval.

A hatch power lift and locking system may include a hatch configured to cover an opening, the hatch being pivotable about an axis between a closed position and an open position. The assembly may also include at least one latch dog attached to the hatch, and at least one dog catch pin engaging with the at least one latch dog in the closed position. The at least one latch dog may include a latch slot for receiving the at least one dog catch pin, and a latch catch for engaging the at least one dog catch pin. The assembly may further include an actuator configured to move at least a portion of the hatch between the closed position and the open position.

In the roof window, a stationary primary frame (1) with frame members includes two opposing side members (1a), a first secondary frame includes a sash (2) with two opposing side members (2a), and a second secondary frame including an intermediate frame (6) are provided. A lifting device (7) including a spring assembly (7a) acting on a lifting arm (7b) is inserted between the stationary primary frame (1) and the intermediate frame (6). A top hinge arrangement (8) is connected to the primary frame (1) and to the sash (2) and the intermediate frame (6) to define a first hinge axis (1) at or near a top of the roof window in a first operational condition of the roof window. To provide a second operational condition of the roof window, the hinge arrangement comprises a set of hinges (10) connected to the intermediate frame (6) and to the sash (2) to define a second hinge axis of the roof window in the second operational condition of the roof window. Each of the hinges (10) comprises a frame hinge part, a sash hinge part, and a movement supporting assembly with a linkage mechanism comprising a number of links and joints.

A switching device for switching an electric motor includes a control unit configured to provide a first switching signal for the electric motor, a memory configured to store at least one end position, and a position sensor configured to provide the control unit with an electrical position signal which indicates a measured position. The control unit is connected communicatively to wireless communication means and is configured to store the measured position in the memory as said at least one end position on the basis of the position signal in response to a received first instruction. The control unit is configured to provide the first switching signal by comparing the stored end position and a position signal measured by the position sensor. A drive with such a switching device and a method for setting up such a switching device.