HINGE FOR A ROOF WINDOW AND ROOF WINDOW WITH A SET OF HINGES
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United States of America Patent
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Issued Date -
Jun 27, 2024
app pub date -
Apr 29, 2022
filing date -
Apr 29, 2021
priority date (Note) -
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Abstract
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).
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