Abstract: The present invention concerns a mounting device for fastening a chair or seat to a groove (41), said groove comprising engagement means (45), where the mounting device comprises locking means (20) prepared for entering the groove and for being moved along the longitudinal axis of the groove; said locking means having means (23) for engaging with the engagement means (45) of the groove. The mounting device further comprises positioning means (30) for finding a position of the mounting device where the locking means will be able to engage with the engagement means of the groove. The mounting device comprises a first cam (22) for controlling the engagement and disengagement of the locking means with said engagement means; a second cam (32) for switching the positioning means into an active position, where the positioning means extend into the groove in selected parts (46) thereof, and one shaft (5) for rotating both the first and the second cam.

Abstract: The present invention concerns a mounting device for fastening a chair or seat to a groove (41), said groove comprising engagement means (45), where the mounting device comprises locking means (20) prepared for entering the groove and for being moved along the longitudinal axis of the groove; said locking means having means (23) for engaging with the engagement means (45) of the groove. The mounting device further comprises positioning means (30) for finding a position of the mounting device where the locking means will be able to engage with the engagement means of the groove. The mounting device comprises a first cam (22) for controlling the engagement and disengagement of the locking means with said engagement means; a second cam (32) for switching the positioning means into an active position, where the positioning means extend into the groove in selected parts (46) thereof, and one shaft (5) for rotating both the first and the second cam.